blogwatcher

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UpdatedJune 4, 2026 at 02:28

Monitor blogs and RSS/Atom feeds for updates using the blogwatcher-cli tool. Add blogs, scan for new articles, track read status, and filter by category.

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Blogwatcher

Track blog and RSS/Atom feed updates with the blogwatcher-cli tool. Supports automatic feed discovery, HTML scraping fallback, OPML import, and read/unread article management.

Installation

Pick one method:

Go: go install github.com/JulienTant/blogwatcher-cli/cmd/blogwatcher-cli@latest
Docker: docker run --rm -v blogwatcher-cli:/data ghcr.io/julientant/blogwatcher-cli
Binary (Linux amd64): curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_linux_amd64.tar.gz | tar xz -C ~/bin blogwatcher-cli (use ~/bin/ if /usr/local/bin/ has permission issues)
Binary (Linux arm64): curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_linux_arm64.tar.gz | tar xz -C /usr/local/bin blogwatcher-cli
Binary (macOS Apple Silicon): curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_darwin_arm64.tar.gz | tar xz -C /usr/local/bin blogwatcher-cli
Binary (macOS Intel): curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_darwin_amd64.tar.gz | tar xz -C /usr/local/bin blogwatcher-cli

All releases: https://github.com/JulienTant/blogwatcher-cli/releases

Docker with persistent storage

By default the database lives at ~/.blogwatcher-cli/blogwatcher-cli.db. In Docker this is lost on container restart. Use BLOGWATCHER_DB or a volume mount to persist it:

# Named volume (simplest)
docker run --rm -v blogwatcher-cli:/data -e BLOGWATCHER_DB=/data/blogwatcher-cli.db ghcr.io/julientant/blogwatcher-cli scan

# Host bind mount
docker run --rm -v /path/on/host:/data -e BLOGWATCHER_DB=/data/blogwatcher-cli.db ghcr.io/julientant/blogwatcher-cli scan

Migrating from the original blogwatcher

If upgrading from Hyaxia/blogwatcher, move your database:

mv ~/.blogwatcher/blogwatcher.db ~/.blogwatcher-cli/blogwatcher-cli.db

The binary name changed from blogwatcher to blogwatcher-cli.

Common Commands

Managing blogs

Add a blog: blogwatcher-cli add "My Blog" https://example.com
Add with explicit feed: blogwatcher-cli add "My Blog" https://example.com --feed-url https://example.com/feed.xml
Add with HTML scraping: blogwatcher-cli add "My Blog" https://example.com --scrape-selector "article h2 a"
List tracked blogs: blogwatcher-cli blogs
Remove a blog: blogwatcher-cli remove "My Blog" --yes
Import from OPML: blogwatcher-cli import subscriptions.opml

Scanning and reading

Scan all blogs: blogwatcher-cli scan
Scan one blog: blogwatcher-cli scan "My Blog"
List unread articles: blogwatcher-cli articles
List all articles: blogwatcher-cli articles --all
Filter by blog: blogwatcher-cli articles --blog "My Blog"
Filter by category: blogwatcher-cli articles --category "Engineering"
Mark article read: blogwatcher-cli read 1
Mark article unread: blogwatcher-cli unread 1
Mark all read: blogwatcher-cli read-all
Mark all read for a blog: blogwatcher-cli read-all --blog "My Blog" --yes

Environment Variables

All flags can be set via environment variables with the BLOGWATCHER_ prefix:

Variable	Description
`BLOGWATCHER_DB`	Path to SQLite database file
`BLOGWATCHER_WORKERS`	Number of concurrent scan workers (default: 8)
`BLOGWATCHER_SILENT`	Only output "scan done" when scanning
`BLOGWATCHER_YES`	Skip confirmation prompts
`BLOGWATCHER_CATEGORY`	Default filter for articles by category

Example Output

$ blogwatcher-cli blogs
Tracked blogs (1):

  xkcd
    URL: https://xkcd.com
    Feed: https://xkcd.com/atom.xml
    Last scanned: 2026-04-03 10:30

$ blogwatcher-cli scan
Scanning 1 blog(s)...

  xkcd
    Source: RSS | Found: 4 | New: 4

Found 4 new article(s) total!

$ blogwatcher-cli articles
Unread articles (2):

  [1] [new] Barrel - Part 13
       Blog: xkcd
       URL: https://xkcd.com/3095/
       Published: 2026-04-02
       Categories: Comics, Science

  [2] [new] Volcano Fact
       Blog: xkcd
       URL: https://xkcd.com/3094/
       Published: 2026-04-01
       Categories: Comics

Reddit RSS Feeds

Reddit subreddits expose RSS feeds at: https://www.reddit.com/r/SUBREDDIT/.rss These work like any other blog feed — add with blogwatcher-cli add "r/Name" "https://www.reddit.com/r/Name/.rss"

YouTube Channel Monitoring

YouTube channels expose standard Atom/RSS feeds at https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID. These work with blogwatcher-cli like any other feed — each new video becomes a discoverable article with its description as content. The daily blog-ingest cron job picks up new videos automatically.

For deep transcript ingestion of individual videos, use the youtube-content skill workflow (yt-dlp → transcript → structured raw article → entity/concept enrichment).

Adding a YouTube Channel to Monitoring

When the user asks to add a YouTube channel to monitoring:

Get the channel ID via yt-dlp:

/opt/data/bin/yt-dlp --print channel_id --playlist-end 1 "https://www.youtube.com/@HANDLE"

Test the RSS feed:

curl -s "https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID" | head -20

Add to OPML in the "YouTube Channels" section (create the section if it doesn't exist):

<outline text="YouTube Channels" title="YouTube Channels">
  <outline type="rss" text="Channel Name" title="Channel Name" xmlUrl="https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID" htmlUrl="https://www.youtube.com/@HANDLE" />
</outline>

Insert before </body> in config/feeds/blogs.opml. Validate: python3 -c "import xml.etree.ElementTree as ET; ET.parse('config/feeds/blogs.opml'); print('OK')"

Add to blogwatcher DB with explicit --feed-url (auto-discovery won't work on YouTube's JS-heavy pages):

blogwatcher-cli add "Channel Name" "https://www.youtube.com/@HANDLE" --feed-url "https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID"

Verify scan works:

blogwatcher-cli scan "Channel Name"
# Expected: Source: RSS | Found: N | New: N

Mark initial backlog as read (prevents re-processing hundreds of historical videos):
```
blogwatcher-cli read-all --blog "Channel Name" --yes
```
Create wiki entity page for the channel under wiki/entities/<channel-name>.md:
- Frontmatter: type: entity, tags: [youtube, …]
- Include: subscriber count, video count, content themes, notable talks table, RSS feed URL
- Link to related entities (speakers) and concepts
- Add to wiki/index.md (alphabetical order) and wiki/log.md

Commit config + wiki:

cd ~/ai-topics && git add config/feeds/blogs.opml wiki/entities/ wiki/index.md wiki/log.md
git commit -m "config: add Channel Name YouTube channel to RSS monitoring + entity page"
git push

Pitfalls

YouTube RSS returns only the 15 most recent videos. Historical content beyond 15 videos is not captured on initial scan — this is acceptable since the goal is ongoing monitoring.
Channel ID is NOT the @handle. Always use yt-dlp --print channel_id to resolve. Example: @aidotengineer → UCLKPca3kwwd-B59HNr-_lvA.
RSS entries are video descriptions only — not full transcripts. For transcript-level analysis, use the youtube-content skill on individual videos.
High-volume channels (3+ videos/day) will produce many raw articles in the daily blog-ingest pipeline. The blog-triage step filters by importance before wiki ingestion.
OPML section naming: Use <outline text="YouTube Channels"> as a top-level group, not mixed into "Individual Blogs" or "Company Tech Blogs". This keeps the OPML organized by source type.

Environment-Specific Notes (exe.dev VM)

Binary installed at: /opt/data/bin/blogwatcher-cli (Hyaxia/blogwatcher v0.0.2, NOT JulienTant fork)
OPML source: ~/ai-topics/config/feeds/blogs.opml (~87 blogs as of 2026-05-08)
- OPML is structured in three groups: <outline text="Individual Blogs"> (84 personal blogs), <outline text="Company Tech Blogs"> (RSS + sitemap-based), and <outline text="YouTube Channels"> (YouTube RSS feeds)
- Corporate blogs use type="rss" for RSS-based or type="sitemap" for sitemap-based (e.g., Anthropic Engineering)
Database: /opt/data/.blogwatcher/blogwatcher.db (NOT ~/.blogwatcher-cli/ — uses the original Hyaxia/blogwatcher path)
⚠️ Cron HOME mismatch: In cron, HOME=/opt/data/.hermes/home but DB is at /opt/data/.blogwatcher/. The daily_inbox_collect.py script must use PROFILE_ROOT instead of Path.home() for DB path resolution, and run_blogwatcher_scan() must set HOME=str(PROFILE_ROOT) in the subprocess env. See blogwatcher-db skill's references/cron-home-fix.md for the exact patch.
To query the DB directly: python3 -c "import sqlite3; conn = sqlite3.connect('/opt/data/.blogwatcher/blogwatcher.db'); ..."
Cron jobs:
- blog-ingest (Job ID: 1bf4c6492c1e) runs at 0 7 * * * UTC = JST 16:00 — RSS blog scan via blogwatcher
- sitemap-monitor (Job ID: c7890b6e0e19) runs at 0 6 * * * UTC = JST 15:00 — sitemap-based monitoring for corporate blogs without RSS
First scan detected ~2,045 articles across 87 feeds

YouTube Channel Monitoring

YouTube channels expose RSS feeds at a predictable URL pattern and can be monitored via blogwatcher just like blogs. Use this workflow when the user asks to add a YouTube channel to monitoring.

YouTube RSS URL Pattern

https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID

To find the channel ID:

/opt/data/bin/yt-dlp --print channel_id --playlist-end 1 "https://www.youtube.com/@channelhandle" 2>/dev/null

Add to OPML

Add a new "YouTube Channels" section to config/feeds/blogs.opml before </body>:

    <outline text="YouTube Channels" title="YouTube Channels">
      <outline type="rss" text="Channel Name" title="Channel Name" xmlUrl="https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID" htmlUrl="https://www.youtube.com/@channelhandle" />
    </outline>

Add to blogwatcher DB

blogwatcher-cli add "Channel Name" "https://www.youtube.com/@channelhandle" \
  --feed-url "https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID"

Verify and mark backlog

blogwatcher-cli scan "Channel Name"       # Verify scan works
blogwatcher-cli read-all --blog "Channel Name" --yes  # Mark initial backlog as read

Create wiki entity page

Create an entity page under wiki/entities/ with channel overview, key facts, content themes, notable talks, and monitoring info. The RSS feed URL and blogwatcher pipeline details should be documented in the Monitoring section.

Pitfalls

YouTube RSS returns video descriptions, NOT transcripts. The blog-ingest pipeline will capture video titles and descriptions for daily awareness. For full transcript ingestion of high-signal talks, use the [[youtube-content]] workflow on individual videos.
High-volume channels: AI Engineer posts 3-5 videos/day during conference seasons. The initial scan will find 15+ entries — always mark as read to avoid re-processing.
Channel ID is stable: Unlike channel handles which can change, channel IDs are permanent. Prefer the ID-based RSS URL over handle-based alternatives.

Check-and-Add Single Feed (One-Off Request)

When the user asks "Xのブログが監視対象に含まれているか確認し、なければ追加して" (check if X blog is monitored, add if not):

Workflow

Check OPML: grep -i "keyword" /opt/data/ai-topics/config/feeds/blogs.opml
- Case-insensitive search. Try both blog name and domain.
- If found → report to user: "すでに含まれています ✅" and done.
Discover RSS feed: If not in OPML, find the feed URL.
- Priority order: check HTML <link> tags → try root-level paths → try blog-subdirectory paths
- Root-level paths FIRST (corporate blogs often put RSS at domain root):
```
curl -sI "https://example.com/rss.xml" | head -1      # ← TRY FIRST
curl -sI "https://example.com/feed.xml" | head -1
curl -sI "https://example.com/atom.xml" | head -1
curl -sI "https://example.com/index.xml" | head -1
```
- Then blog subdirectory:
```
curl -sI "https://example.com/blog/rss.xml" | head -1
curl -sI "https://example.com/blog/feed.xml" | head -1
curl -sI "https://example.com/feed" | head -1
```
- Fall back to references/feed-discovery-patterns.md for platform-specific patterns, or references/corporate-blog-tracking.md for corporate blog-specific approaches (sitemap, scrape-selector).
- Check sitemap as an alternative discovery method for blogs without RSS:
```
curl -s "https://example.com/sitemap.xml" | grep -i "blog\|engineering"
```
Verify feed content: curl -s "FEED_URL" | head -30
- Check for valid RSS/Atom XML (<rss, <feed, <channel>, <item> elements)
- If 404 or non-XML response → try different URL, or fall back to --scrape-selector
Insert into OPML: Add an <outline> entry in the correct group.
- Individual blog → <outline text="Individual Blogs"> group (lines ~7-109)
- Company/org blog → <outline text="Company Tech Blogs"> group (lines ~110-135)
- For company blogs with RSS: add at end of group with type="rss"
- For company blogs without RSS (sitemap-based): add with type="sitemap" and xmlUrl pointing to the sitemap URL
- Format RSS: <outline type="rss" text="Blog Name" title="Blog Name" xmlUrl="FEED_URL" htmlUrl="SITE_URL" />
- Format sitemap: <outline type="sitemap" text="Blog Name" title="Blog Name" xmlUrl="SITEMAP_URL" htmlUrl="SITE_URL" />
- Verify with: grep -n "Blog Name" blogs.opml

Add to blogwatcher DB AND scan + cleanup:

# Add (RSS): 
blogwatcher-cli add "Blog Name" "https://example.com/blog" --feed-url "FEED_URL"
# OR Add (scrape):
blogwatcher-cli add "Blog Name" "https://example.com/blog" --scrape-selector "article a"

# Verify scan works:
blogwatcher-cli scan "Blog Name"

# Mark initial backlog as read (FOUND: N / NEW: N → all historical):
blogwatcher-cli read-all --blog "Blog Name" --yes

Commit config change:

cd ~/ai-topics && git add config/feeds/blogs.opml && git commit -m "config: add Blog Name RSS feed" && git push

(If author has existing wiki entity page) — Enrich the entity page:
- Check: search_files path=~/wiki/entities pattern="author-name" — if found, enrich the existing page
- Blog URL in infobox: Update stale blog URLs (e.g., deleted WordPress → active Medium)
- Add Monitoring section at an appropriate point in the page structure:
```
## Monitoring

| Source | Method | Status |
|--------|--------|--------|
| RSS Feed | [feed-url](FEED_URL) | ✅ Active (added YYYY-MM-DD; RSS → blogwatcher → daily `blog-ingest` pipeline) |
| X/Twitter | [@handle](https://x.com/handle) | Tracked in `x-accounts.yaml` (if applicable) |
```
- Recent notable work: Scan the RSS feed output (curl -s "FEED_URL" | head -30) for significant recent posts. If something substantial is found (major technical post, research result, framework release), add a relevant section to the entity page with key details. Don't add trivial posts.
- Update frontmatter: Bump updated: date, add new sources, add any new tags
- Update Related/Sources sections: Add cross-links to new concepts, append new source URLs
- New tags → SCHEMA.md: If a genuinely new tag is added to frontmatter, add it to SCHEMA.md taxonomy FIRST
- Update index.md: Enrich the entity's index entry with new monitoring/blog info and notable work
- Update log.md: Prepend log entry (use execute_code + Python with open() prepend to avoid --- anchor trap — see wiki-graph-health skill §H5)
- Commit everything together: cd ~/ai-topics && git add config/feeds/ wiki/ && git commit -m "config+wiki: add Blog Name RSS + entity enrichment" && git push

Pitfalls

OPML is NOT the blogwatcher DB: Adding to OPML does NOT add to the blogwatcher SQLite database. The next full scan will auto-discover it.
Blogwatcher-cli does NOT follow HTTP redirects: If the feed URL redirects, it will fail at scan time. Verify the final destination URL.
Webflow sites: Often serve RSS at /blog/rss.xml rather than root-level paths. The HTML <head> may not include a <link type="application/rss+xml"> tag even though the feed exists.
Corporate blogs: RSS at root, not under /blog/: Sierra (sierra.ai/rss.xml) and OpenAI (developers.openai.com/rss.xml) both serve RSS from the domain root. Always check root-level paths (/rss.xml, /feed.xml) BEFORE checking blog subdirectories.
Engineering blogs on separate subdomains: Some companies host their engineering blog on a different subdomain from their marketing blog (e.g., Ramp's engineering blog is at builders.ramp.com, not ramp.com/blog). Always check the company's job postings, GitHub org, or search "company engineering blog" to discover these before concluding no blog exists.
Scrape-selector blogs: skip OPML: If a blog has no RSS feed and uses --scrape-selector, do NOT add it to the OPML. OPML requires xmlUrl. Track it only in the blogwatcher DB. Consider migrating to sitemap-based monitoring (see Sitemap-Based Monitoring section) for greater reliability.
Always mark initial backlog as read: After adding a new blog, run read-all --blog "Name" --yes to prevent the daily scan from re-processing hundreds of historical articles.
Migrate scrape-selector → sitemap when possible: HTML scraping is fragile. If the site has a sitemap with blog URLs and lastmod dates, migrate to sitemap_monitor.py. Remove from blogwatcher DB, add to sitemap_monitor SOURCES list, and add to OPML Company group with type="sitemap".
Commit only config/feeds/: Adding a blog is a config change, not a wiki change. Do not git add wiki/ unless you also made wiki changes this session.

Corporate Tech Blog Feed Discovery

Corporate tech blogs (Anthropic Engineering, OpenAI Developers, Sierra, etc.) often have non-standard RSS setups. Follow this extended discovery workflow:

For single-blog discovery, use the workflow below. For batch discovery across dozens of URLs (e.g., when ingesting a curated company list), use the parallel curl approach in references/rss-batch-discovery.md.

Discovery Priority (updated)

Check HTML <link> tags for application/rss+xml or application/atom+xml

Try root-level paths FIRST — corporate blogs often place feeds at the domain root, NOT under /blog/:

curl -sI "https://example.com/rss.xml" | head -1      # ← TRY THIS FIRST
curl -sI "https://example.com/feed.xml" | head -1
curl -sI "https://example.com/atom.xml" | head -1
curl -sI "https://example.com/index.xml" | head -1

Then try the blog subdirectory:

curl -sI "https://example.com/blog/rss.xml" | head -1
curl -sI "https://example.com/blog/feed.xml" | head -1

Check the sitemap for blog post URLs — many corporate sites expose all blog URLs with lastmod dates:
```
curl -s "https://example.com/sitemap.xml" | grep -i "blog\|engineering"
```
Fall back to HTML scraping with --scrape-selector if no RSS exists.

Real-World Examples

Blog	RSS URL	Discovery Method
OpenAI Developers Blog	`https://developers.openai.com/rss.xml`	`<link rel="alternate">` in HTML head (root-level, not `/blog/rss.xml`)
Sierra Blog	`https://sierra.ai/rss.xml`	Root-level trial-and-error (not advertised in HTML)
Anthropic Engineering	NONE	HTML scrape-selector (`article a`) — sitemap at `anthropic.com/sitemap.xml` has all `/engineering/` URLs

HTML Scrape-Selector Fallback

When no RSS feed exists, use blogwatcher-cli's --scrape-selector:

blogwatcher-cli add "Blog Name" "https://example.com/blog" --scrape-selector "article a"

Selector guidance:

Start broad (article a) and verify with a scan
If the selector catches too many non-article links, refine it
Test immediately after adding: blogwatcher-cli scan "Blog Name"
Common selectors that work: article a, a[href^="/blog/"], h2 a, .post-title a

Successful examples:

article a → Anthropic Engineering (found 27 articles)
article h2 a → typical blog listing pattern

Post-Addition: Mark Initial Backlog as Read

After adding a new blog, the first scan finds ALL historical articles. Mark them as read so future scans only highlight new content:

blogwatcher-cli read-all --blog "Blog Name" --yes

Sitemap-Based Monitoring (Advanced)

For high-value corporate blogs without RSS (e.g., Anthropic Engineering), sitemap monitoring is more reliable than HTML scraping. The sitemap_monitor.py script handles this automatically.

Script: ~/ai-topics/scripts/sitemap_monitor.py (source of truth) → ~/.hermes/scripts/sitemap_monitor.py (cron execution copy)

How it works:

Fetches the site's sitemap.xml
Filters URLs matching a pattern (e.g., /engineering/)
Compares against previously seen URLs stored in ~/.hermes/processed_{name}.json
Scrapes new articles with BeautifulSoup + httpx
Saves raw articles to wiki/raw/articles/
Outputs checkpoint JSON to ~/.hermes/cron/data/sitemap_monitor/latest.json

Cron integration: sitemap-monitor job (ID: c7890b6e0e19) runs daily at 0 6 * * * UTC (JST 15:00) with no_agent=True. Raw articles are later picked up by the dreaming pipeline (18:00 UTC).

Single script, multiple companies: The SOURCES list supports unlimited companies in one script. Each source gets its own state_file for independent deduplication. No per-company script needed.

SOURCE config template (each company gets one entry):

{
    "name": "Company Blog",                   # Display name for logging
    "url": "https://company.com/blog",         # Blog homepage
    "sitemap_url": "https://company.com/sitemap.xml",  # Sitemap URL
    "url_pattern": "/blog/",                   # URL filter (e.g. "/blog/", "/engineering/", "/news/")
    "file_prefix": "company-name",             # Used in raw article filenames: {date}_{prefix}_{slug}.md
    "title_suffixes": [" | Company", " - Company"],  # Patterns to strip from <title> tags
    "state_file": os.path.expanduser("~/.hermes/processed_company_blog.json"),
}

Field notes:

file_prefix — required. Prevents filename collisions between sources.
title_suffixes — optional but recommended. Many corporate blogs append " | Company Name" to <title>. Stripping these keeps downloaded article titles clean.
url_pattern — must match blog post URLs exactly. If the blog is at /blog/post-slug, use /blog/. If at /news/post-slug, use /news/. Too broad a pattern (e.g., /) matches every page on the site.
state_file — one per source, unique paths. Two sources sharing one file corrupt dedup.

Adding a new sitemap-based source:

Edit sitemap_monitor.py — add an entry to the SOURCES list following the template above. Verify url_pattern by checking the sitemap.
Add to OPML Company group with type="sitemap"
Do NOT add to blogwatcher DB (sitemap monitor is independent)
Copy updated script to ~/.hermes/scripts/
Commit: cd ~/ai-topics && git add config/feeds/ scripts/ && git commit && git push
First run scrapes ALL historical articles (state file seeds the seen-URL set). Subsequent cron runs only find new posts.

Company Blog Monitoring Tiers

When ingesting a large list of companies (e.g., from Paraform Talent Density Index, YC batches, startup rankings), prioritise by tier:

Tier 1 — AI core companies (monitor with RSS or sitemap immediately): Frontier labs, AI infrastructure, coding agents, embedding/voice models. These blogs produce content directly relevant to the wiki domain.

Tier 2 — Important but lower AI density: Autonomous vehicles, defense AI, legal AI, recruiting AI, dev-tool-adjacent. Add to sitemap monitor in the next batch. Worth monitoring but yield is lower.

Tier 3 — Non-AI companies on the list: E-commerce, wholesale marketplaces, billing platforms, generic analytics. Skip or add scrape-selector if they occasionally publish AI content.

Tier X — No blog found: Some companies simply don't have a tech blog. Mark as no_blog in the entity page and move on.

Batch ingestion workflow:

Run references/rss-batch-discovery.md on all blog URLs → get RSS found/not-found split
Add RSS-found blogs to blogwatcher DB + OPML in one batch (chain blogwatcher-cli add commands)
For RSS-not-found, check sitemaps → add Tier 1/2 to sitemap_monitor.py SOURCES
Add sitemap sources to OPML Company group with type="sitemap"
Run a manual first scan to seed state files
Commit config + scripts together

Migrating from scrape-selector to sitemap

# 1. Remove from blogwatcher DB
blogwatcher-cli remove "Anthropic Engineering" --yes

# 2. Add to sitemap_monitor.py SOURCES list
# 3. Add to OPML Company group with type="sitemap"
# 4. Run sitemap_monitor.py to seed the state file
/opt/data/.hermes/venv/bin/python sitemap_monitor.py

This avoids the fragility of CSS selectors breaking on site redesigns.

Bulk Adding Blogs from Curated Lists

When a reference article or newsletter recommends blogs to add, follow this workflow to keep both the blogwatcher DB and the OPML in sync.

Workflow Steps

Extract blog recommendations from the source article using web_extract or curl.
Compare against current blogwatcher DB: /opt/data/bin/blogwatcher-cli blogs — produce a list of missing blogs.
For each missing blog, add to blogwatcher DB:
```
/opt/data/bin/blogwatcher-cli add "Blog Name" "https://example.com"
```
blogwatcher-cli auto-discovers RSS at scan time, but the DB stores feed_url=None until then.

Discover RSS/Atom feed URLs for each new blog. See references/feed-discovery-patterns.md for platform-specific patterns.

# Quick check: look for <link> tags
curl -sL https://example.com | grep -iE '(rss|atom|feed)' | grep -oP 'href="[^"]*\.(xml|rss|atom)"'

Update the OPML at ~/ai-topics/config/feeds/blogs.opml with proper <outline> entries including the discovered xmlUrl. Use patch to insert entries before the closing </outline> tag:
```
<outline type="rss" text="Blog Name" title="Blog Name" xmlUrl="https://example.com/feed.xml" htmlUrl="https://example.com/" />
```

Verify OPML validity:

python3 -c "import xml.etree.ElementTree as ET; ET.parse('~/ai-topics/config/feeds/blogs.opml')"

Commit and push:

cd ~/ai-topics && git add config/feeds/blogs.opml && git commit -m "wiki: add N blogs from <source>" && git push

Pitfalls

blogwatcher-cli add does NOT discover feeds immediately. It sets feed_url=None until the next scan. The OPML should still have the explicit xmlUrl to serve as the source of truth.
Blogger/Blogspot feeds sometimes use an ID-based path (feeds/posts/default) rather than the blog name. The ?alt=rss query param also works.
Substack feeds accept both https://name.substack.com/feed and https://name.substack.com/feed.xml.
Inactive blogs (no posts in 3+ years) should be skipped — mark them as blocked and note the reason.
Not all blogs have RSS. For these, either skip or use --scrape-selector if the site has a predictable HTML structure.
Keep the OPML and blogwatcher DB in sync manually — they are independent stores. Adding to one does not update the other.

Reference

See references/feed-discovery-patterns.md for detailed platform feed URL patterns and the full ClickHouse curated list feed table.

Troubleshooting Feed Failures

Common issues when scanning feeds:

301/302/308 redirects: blogwatcher-cli does NOT follow redirects. Fix by removing the old entry and re-adding with the correct URL (often www. prefix or different path).
406 Forbidden / 404 Not Found: The feed URL in OPML may be wrong. Try discovering the actual feed URL via curl -sL <blog_url> and looking for <link type="application/rss+xml"> or <link type="application/atom+xml"> tags.
Connection timeout: The site may be down or blocking the request. Consider removing from the tracking list.

Quarto on GitHub Pages: False Positive RSS Feeds

Quarto blogs with feed: true in _quarto.yml generate a <link rel="alternate" type="application/rss+xml" href="index.xml"> tag in the HTML <head>. However, the actual index.xml file may not exist on the deployed gh-pages branch — the Quarto build sometimes omits it even though it is configured.

Key insight: This is a false positive, not a regular broken feed. The HTML actively advertises an RSS feed that was never produced by the build.

Detection workflow:

Check the feed URL: curl -sI https://blog.example.com/index.xml | head -5 — if 404, the feed does not exist despite the HTML <link> tag.
Verify the deployed branch: curl -sL "https://api.github.com/repos/owner/repo/git/trees/gh-pages?recursive=1" | python3 -c "import sys,json; [print(t['path']) for t in json.load(sys.stdin).get('tree',[]) if 'xml' in t['path'].lower()]" — if index.xml is absent from the tree, the build never produced it.
Confirm by checking the site config: _quarto.yml listing section with feed: true + URL base path.

Action: If confirmed broken, consider:

Re-adding with --scrape-selector fallback if the blog has predictable HTML structure
Filing an issue with the blog author about the missing feed
Removing from OPML if scraping is not viable

Important: OPML vs DB are independent

blogwatcher-cli maintains its own SQLite database at ~/.blogwatcher-cli/blogwatcher-cli.db. This is separate from the OPML file. Two critical implications:

Removing a URL from the OPML does NOT remove it from the blogwatcher-cli DB. The DB still tracks and scans it independently.
Importing an OPML adds feeds but does NOT remove feeds no longer in the OPML. Each blogwatcher-cli import is additive.

If a feed fails in the daily RSS scan, check the blogwatcher-cli DB, not just the OPML:

# Check if a blog is in the DB
blogwatcher-cli blogs | grep "failing-blog.com"

# Remove from DB
blogwatcher-cli remove "failing-blog.com" --yes

Troubleshooting: When CLI Commands Return Empty/Unreadable Output

Sometimes blogwatcher-cli blogs or blogwatcher-cli articles return empty or garbled output (encoding issues, terminal rendering problems). Fall back to direct SQLite queries:

# List all tracked blogs with last scan date
sqlite3 ~/.blogwatcher-cli/blogwatcher-cli.db \
  "SELECT name, url, feed_url, last_scanned FROM blogs ORDER BY name;"

# List articles for a specific blog (newest first)
sqlite3 ~/.blogwatcher-cli/blogwatcher-cli.db \
  "SELECT a.title, a.url, a.published_date, a.is_read FROM articles a JOIN blogs b ON a.blog_id = b.id WHERE b.name = 'blogname.com' ORDER BY a.published_date DESC LIMIT 20;"

# Count articles per blog
sqlite3 ~/.blogwatcher-cli/blogwatcher-cli.db \
  "SELECT b.name, COUNT(a.id) as article_count FROM blogs b LEFT JOIN articles a ON b.id = a.blog_id GROUP BY b.name ORDER BY article_count DESC;"

# Find unread article count
sqlite3 ~/.blogwatcher-cli/blogwatcher-cli.db \
  "SELECT COUNT(*) FROM articles WHERE is_read = 0;"

# Check DB schema
sqlite3 ~/.blogwatcher-cli/blogwatcher-cli.db ".schema"

Tables: blogs (id, name, url, feed_url, scrape_selector, last_scanned), articles (id, blog_id, title, url, published_date, discovered_date, is_read, categories), schema_migrations.

Fix workflow for broken feeds

# 1. Remove the broken entry from the DB (not just OPML)
blogwatcher-cli remove "broken-blog.com" --yes

# 2. Verify the correct feed URL
curl -sL -o /dev/null -w "%{http_code}" "https://blog.com/feed.xml"

# 3. Re-add with correct URL
blogwatcher-cli add "broken-blog.com" "https://blog.com" --feed-url "https://blog.com/correct-feed.xml"

Excluding Blogs for Content Reasons (Off-Domain)

When a tracked blog's content is rarely or never relevant to the wiki domain (e.g., no AI/LLM content from a systems-programming blog), exclude it from RSS monitoring while preserving any wiki entity pages. This is distinct from broken-feed removal — the feed works, but the signal-to-noise ratio is too low.

Full Removal Workflow

Verify the blog is in OPML and DB: grep -n "blog-name" ~/ai-topics/config/feeds/blogs.opml and /opt/data/bin/blogwatcher-cli blogs | grep "blog-name"

Remove from OPML: Use patch to delete the <outline> line. After removal, validate:

python3 -c "import xml.etree.ElementTree as ET; ET.parse('/opt/data/ai-topics/config/feeds/blogs.opml'); print('OPML OK')"

Remove from blogwatcher DB (always do both — OPML and DB are independent):
```
/opt/data/bin/blogwatcher-cli remove "Blog Name" --yes
```
Check for entity page: search_files path=~/wiki/entities pattern="author-or-domain-name"
- If entity page exists: update it with a Monitoring section marking RSS as excluded
- If no entity page: skip — nothing to update in wiki

Update entity page (if one exists):

Remove the RSS URL from the infobox if present

Add or update a Monitoring section:

## Monitoring

| Source | Method | Status |
|--------|--------|--------|
| RSS Feed | — | ❌ Excluded (YYYY-MM-DD) — AI content is rare; RSS removed from blogwatcher + OPML to reduce noise |

Bump updated: date in frontmatter

Update wiki/index.md: Append exclusion note to the entity's index entry (e.g., RSS excluded (YYYY-MM-DD, AI content rare))

Update wiki/log.md: Prepend a log entry documenting what was removed and why. Use python3 prepend to avoid --- frontmatter anchor traps:

python3 -c "
with open('/opt/data/wiki/log.md') as f: content = f.read()
entry = '## [YYYY-MM-DD] config | RSS exclusion — Name\n\n...\n\n'
with open('/opt/data/wiki/log.md', 'w') as f: f.write(entry + content)
"

Commit and push:

cd ~/ai-topics && git add config/feeds/blogs.opml wiki/ && git commit -m "config: exclude Blog Name from RSS monitoring (off-domain content)" && git push

Pitfalls

OPML and blogwatcher DB are independent — removing from one does NOT remove from the other. Always do both steps.
Don't delete entity pages — the exclusion is at the RSS level only. The entity page records that the person/org exists and why they're excluded.
Don't use blogwatcher-cli read-all before removing — since the blog is being removed entirely, there's no need to mark old articles as read.
Exclusion is reversible — if the author later starts writing AI content, re-add by following the Check-and-Add workflow. The entity page's Monitoring section documents the exclusion reason and date, making it easy to revisit.
Commit includes wiki/ when entity/index/log were updated, unlike simple OPML-only config commits.
Auto-discovers RSS/Atom feeds from blog homepages when no --feed-url is provided.
Falls back to HTML scraping if RSS fails and --scrape-selector is configured.
Categories from RSS/Atom feeds are stored and can be used to filter articles.
Import blogs in bulk from OPML files exported by Feedly, Inoreader, NewsBlur, etc.
Database stored at ~/.blogwatcher-cli/blogwatcher-cli.db by default (override with --db or BLOGWATCHER_DB).
Use blogwatcher-cli <command> --help to discover all flags and options.
blogwatcher-cli does NOT follow HTTP redirects — this is the #1 cause of scan failures when importing from OPML files with outdated URLs.

name	blogwatcher
description	Monitor blogs and RSS/Atom feeds for updates using the blogwatcher-cli tool. Add blogs, scan for new articles, track read status, and filter by category.
version	2.2.0
author	JulienTant (fork of Hyaxia/blogwatcher)
license	MIT
metadata	{"hermes":{"tags":["RSS","Blogs","Feed-Reader","Monitoring"],"homepage":"https://github.com/JulienTant/blogwatcher-cli"}}
prerequisites	{"commands":["blogwatcher-cli"]}

Blogwatcher

Track blog and RSS/Atom feed updates with the blogwatcher-cli tool. Supports automatic feed discovery, HTML scraping fallback, OPML import, and read/unread article management.

Installation

Pick one method:

Go: go install github.com/JulienTant/blogwatcher-cli/cmd/blogwatcher-cli@latest
Docker: docker run --rm -v blogwatcher-cli:/data ghcr.io/julientant/blogwatcher-cli
Binary (Linux amd64): curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_linux_amd64.tar.gz | tar xz -C ~/bin blogwatcher-cli (use ~/bin/ if /usr/local/bin/ has permission issues)
Binary (Linux arm64): curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_linux_arm64.tar.gz | tar xz -C /usr/local/bin blogwatcher-cli
Binary (macOS Apple Silicon): curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_darwin_arm64.tar.gz | tar xz -C /usr/local/bin blogwatcher-cli
Binary (macOS Intel): curl -sL https://github.com/JulienTant/blogwatcher-cli/releases/latest/download/blogwatcher-cli_darwin_amd64.tar.gz | tar xz -C /usr/local/bin blogwatcher-cli

All releases: https://github.com/JulienTant/blogwatcher-cli/releases

Docker with persistent storage

By default the database lives at ~/.blogwatcher-cli/blogwatcher-cli.db. In Docker this is lost on container restart. Use BLOGWATCHER_DB or a volume mount to persist it:

# Named volume (simplest)
docker run --rm -v blogwatcher-cli:/data -e BLOGWATCHER_DB=/data/blogwatcher-cli.db ghcr.io/julientant/blogwatcher-cli scan

# Host bind mount
docker run --rm -v /path/on/host:/data -e BLOGWATCHER_DB=/data/blogwatcher-cli.db ghcr.io/julientant/blogwatcher-cli scan

Migrating from the original blogwatcher

If upgrading from Hyaxia/blogwatcher, move your database:

mv ~/.blogwatcher/blogwatcher.db ~/.blogwatcher-cli/blogwatcher-cli.db

The binary name changed from blogwatcher to blogwatcher-cli.

Common Commands

Managing blogs

Add a blog: blogwatcher-cli add "My Blog" https://example.com
Add with explicit feed: blogwatcher-cli add "My Blog" https://example.com --feed-url https://example.com/feed.xml
Add with HTML scraping: blogwatcher-cli add "My Blog" https://example.com --scrape-selector "article h2 a"
List tracked blogs: blogwatcher-cli blogs
Remove a blog: blogwatcher-cli remove "My Blog" --yes
Import from OPML: blogwatcher-cli import subscriptions.opml

Scanning and reading

Scan all blogs: blogwatcher-cli scan
Scan one blog: blogwatcher-cli scan "My Blog"
List unread articles: blogwatcher-cli articles
List all articles: blogwatcher-cli articles --all
Filter by blog: blogwatcher-cli articles --blog "My Blog"
Filter by category: blogwatcher-cli articles --category "Engineering"
Mark article read: blogwatcher-cli read 1
Mark article unread: blogwatcher-cli unread 1
Mark all read: blogwatcher-cli read-all
Mark all read for a blog: blogwatcher-cli read-all --blog "My Blog" --yes

Environment Variables

All flags can be set via environment variables with the BLOGWATCHER_ prefix:

Variable	Description
`BLOGWATCHER_DB`	Path to SQLite database file
`BLOGWATCHER_WORKERS`	Number of concurrent scan workers (default: 8)
`BLOGWATCHER_SILENT`	Only output "scan done" when scanning
`BLOGWATCHER_YES`	Skip confirmation prompts
`BLOGWATCHER_CATEGORY`	Default filter for articles by category

Example Output

$ blogwatcher-cli blogs
Tracked blogs (1):

  xkcd
    URL: https://xkcd.com
    Feed: https://xkcd.com/atom.xml
    Last scanned: 2026-04-03 10:30

$ blogwatcher-cli scan
Scanning 1 blog(s)...

  xkcd
    Source: RSS | Found: 4 | New: 4

Found 4 new article(s) total!

$ blogwatcher-cli articles
Unread articles (2):

  [1] [new] Barrel - Part 13
       Blog: xkcd
       URL: https://xkcd.com/3095/
       Published: 2026-04-02
       Categories: Comics, Science

  [2] [new] Volcano Fact
       Blog: xkcd
       URL: https://xkcd.com/3094/
       Published: 2026-04-01
       Categories: Comics

Reddit RSS Feeds

Reddit subreddits expose RSS feeds at: https://www.reddit.com/r/SUBREDDIT/.rss These work like any other blog feed — add with blogwatcher-cli add "r/Name" "https://www.reddit.com/r/Name/.rss"

YouTube Channel Monitoring

For deep transcript ingestion of individual videos, use the youtube-content skill workflow (yt-dlp → transcript → structured raw article → entity/concept enrichment).

Adding a YouTube Channel to Monitoring

When the user asks to add a YouTube channel to monitoring:

Get the channel ID via yt-dlp:

/opt/data/bin/yt-dlp --print channel_id --playlist-end 1 "https://www.youtube.com/@HANDLE"

Test the RSS feed:

curl -s "https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID" | head -20

Add to OPML in the "YouTube Channels" section (create the section if it doesn't exist):

<outline text="YouTube Channels" title="YouTube Channels">
  <outline type="rss" text="Channel Name" title="Channel Name" xmlUrl="https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID" htmlUrl="https://www.youtube.com/@HANDLE" />
</outline>

Insert before </body> in config/feeds/blogs.opml. Validate: python3 -c "import xml.etree.ElementTree as ET; ET.parse('config/feeds/blogs.opml'); print('OK')"

Add to blogwatcher DB with explicit --feed-url (auto-discovery won't work on YouTube's JS-heavy pages):

blogwatcher-cli add "Channel Name" "https://www.youtube.com/@HANDLE" --feed-url "https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID"

Verify scan works:

blogwatcher-cli scan "Channel Name"
# Expected: Source: RSS | Found: N | New: N

Mark initial backlog as read (prevents re-processing hundreds of historical videos):
```
blogwatcher-cli read-all --blog "Channel Name" --yes
```
Create wiki entity page for the channel under wiki/entities/<channel-name>.md:
- Frontmatter: type: entity, tags: [youtube, …]
- Include: subscriber count, video count, content themes, notable talks table, RSS feed URL
- Link to related entities (speakers) and concepts
- Add to wiki/index.md (alphabetical order) and wiki/log.md

Commit config + wiki:

cd ~/ai-topics && git add config/feeds/blogs.opml wiki/entities/ wiki/index.md wiki/log.md
git commit -m "config: add Channel Name YouTube channel to RSS monitoring + entity page"
git push

Pitfalls

YouTube RSS returns only the 15 most recent videos. Historical content beyond 15 videos is not captured on initial scan — this is acceptable since the goal is ongoing monitoring.
Channel ID is NOT the @handle. Always use yt-dlp --print channel_id to resolve. Example: @aidotengineer → UCLKPca3kwwd-B59HNr-_lvA.
RSS entries are video descriptions only — not full transcripts. For transcript-level analysis, use the youtube-content skill on individual videos.
High-volume channels (3+ videos/day) will produce many raw articles in the daily blog-ingest pipeline. The blog-triage step filters by importance before wiki ingestion.
OPML section naming: Use <outline text="YouTube Channels"> as a top-level group, not mixed into "Individual Blogs" or "Company Tech Blogs". This keeps the OPML organized by source type.

Environment-Specific Notes (exe.dev VM)

Binary installed at: /opt/data/bin/blogwatcher-cli (Hyaxia/blogwatcher v0.0.2, NOT JulienTant fork)
OPML source: ~/ai-topics/config/feeds/blogs.opml (~87 blogs as of 2026-05-08)
- OPML is structured in three groups: <outline text="Individual Blogs"> (84 personal blogs), <outline text="Company Tech Blogs"> (RSS + sitemap-based), and <outline text="YouTube Channels"> (YouTube RSS feeds)
- Corporate blogs use type="rss" for RSS-based or type="sitemap" for sitemap-based (e.g., Anthropic Engineering)
Database: /opt/data/.blogwatcher/blogwatcher.db (NOT ~/.blogwatcher-cli/ — uses the original Hyaxia/blogwatcher path)
⚠️ Cron HOME mismatch: In cron, HOME=/opt/data/.hermes/home but DB is at /opt/data/.blogwatcher/. The daily_inbox_collect.py script must use PROFILE_ROOT instead of Path.home() for DB path resolution, and run_blogwatcher_scan() must set HOME=str(PROFILE_ROOT) in the subprocess env. See blogwatcher-db skill's references/cron-home-fix.md for the exact patch.
To query the DB directly: python3 -c "import sqlite3; conn = sqlite3.connect('/opt/data/.blogwatcher/blogwatcher.db'); ..."
Cron jobs:
- blog-ingest (Job ID: 1bf4c6492c1e) runs at 0 7 * * * UTC = JST 16:00 — RSS blog scan via blogwatcher
- sitemap-monitor (Job ID: c7890b6e0e19) runs at 0 6 * * * UTC = JST 15:00 — sitemap-based monitoring for corporate blogs without RSS
First scan detected ~2,045 articles across 87 feeds

YouTube Channel Monitoring

YouTube channels expose RSS feeds at a predictable URL pattern and can be monitored via blogwatcher just like blogs. Use this workflow when the user asks to add a YouTube channel to monitoring.

YouTube RSS URL Pattern

https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID

To find the channel ID:

/opt/data/bin/yt-dlp --print channel_id --playlist-end 1 "https://www.youtube.com/@channelhandle" 2>/dev/null

Add to OPML

Add a new "YouTube Channels" section to config/feeds/blogs.opml before </body>:

    <outline text="YouTube Channels" title="YouTube Channels">
      <outline type="rss" text="Channel Name" title="Channel Name" xmlUrl="https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID" htmlUrl="https://www.youtube.com/@channelhandle" />
    </outline>

Add to blogwatcher DB

blogwatcher-cli add "Channel Name" "https://www.youtube.com/@channelhandle" \
  --feed-url "https://www.youtube.com/feeds/videos.xml?channel_id=CHANNEL_ID"

Verify and mark backlog

blogwatcher-cli scan "Channel Name"       # Verify scan works
blogwatcher-cli read-all --blog "Channel Name" --yes  # Mark initial backlog as read

Create wiki entity page

Pitfalls

YouTube RSS returns video descriptions, NOT transcripts. The blog-ingest pipeline will capture video titles and descriptions for daily awareness. For full transcript ingestion of high-signal talks, use the [[youtube-content]] workflow on individual videos.
High-volume channels: AI Engineer posts 3-5 videos/day during conference seasons. The initial scan will find 15+ entries — always mark as read to avoid re-processing.
Channel ID is stable: Unlike channel handles which can change, channel IDs are permanent. Prefer the ID-based RSS URL over handle-based alternatives.

Check-and-Add Single Feed (One-Off Request)

When the user asks "Xのブログが監視対象に含まれているか確認し、なければ追加して" (check if X blog is monitored, add if not):

Workflow

Check OPML: grep -i "keyword" /opt/data/ai-topics/config/feeds/blogs.opml
- Case-insensitive search. Try both blog name and domain.
- If found → report to user: "すでに含まれています ✅" and done.
Discover RSS feed: If not in OPML, find the feed URL.
- Priority order: check HTML <link> tags → try root-level paths → try blog-subdirectory paths
- Root-level paths FIRST (corporate blogs often put RSS at domain root):
```
curl -sI "https://example.com/rss.xml" | head -1      # ← TRY FIRST
curl -sI "https://example.com/feed.xml" | head -1
curl -sI "https://example.com/atom.xml" | head -1
curl -sI "https://example.com/index.xml" | head -1
```
- Then blog subdirectory:
```
curl -sI "https://example.com/blog/rss.xml" | head -1
curl -sI "https://example.com/blog/feed.xml" | head -1
curl -sI "https://example.com/feed" | head -1
```
- Fall back to references/feed-discovery-patterns.md for platform-specific patterns, or references/corporate-blog-tracking.md for corporate blog-specific approaches (sitemap, scrape-selector).
- Check sitemap as an alternative discovery method for blogs without RSS:
```
curl -s "https://example.com/sitemap.xml" | grep -i "blog\|engineering"
```
Verify feed content: curl -s "FEED_URL" | head -30
- Check for valid RSS/Atom XML (<rss, <feed, <channel>, <item> elements)
- If 404 or non-XML response → try different URL, or fall back to --scrape-selector
Insert into OPML: Add an <outline> entry in the correct group.
- Individual blog → <outline text="Individual Blogs"> group (lines ~7-109)
- Company/org blog → <outline text="Company Tech Blogs"> group (lines ~110-135)
- For company blogs with RSS: add at end of group with type="rss"
- For company blogs without RSS (sitemap-based): add with type="sitemap" and xmlUrl pointing to the sitemap URL
- Format RSS: <outline type="rss" text="Blog Name" title="Blog Name" xmlUrl="FEED_URL" htmlUrl="SITE_URL" />
- Format sitemap: <outline type="sitemap" text="Blog Name" title="Blog Name" xmlUrl="SITEMAP_URL" htmlUrl="SITE_URL" />
- Verify with: grep -n "Blog Name" blogs.opml

Add to blogwatcher DB AND scan + cleanup:

# Add (RSS): 
blogwatcher-cli add "Blog Name" "https://example.com/blog" --feed-url "FEED_URL"
# OR Add (scrape):
blogwatcher-cli add "Blog Name" "https://example.com/blog" --scrape-selector "article a"

# Verify scan works:
blogwatcher-cli scan "Blog Name"

# Mark initial backlog as read (FOUND: N / NEW: N → all historical):
blogwatcher-cli read-all --blog "Blog Name" --yes

Commit config change:

cd ~/ai-topics && git add config/feeds/blogs.opml && git commit -m "config: add Blog Name RSS feed" && git push

(If author has existing wiki entity page) — Enrich the entity page:
- Check: search_files path=~/wiki/entities pattern="author-name" — if found, enrich the existing page
- Blog URL in infobox: Update stale blog URLs (e.g., deleted WordPress → active Medium)
- Add Monitoring section at an appropriate point in the page structure:
```
## Monitoring

| Source | Method | Status |
|--------|--------|--------|
| RSS Feed | [feed-url](FEED_URL) | ✅ Active (added YYYY-MM-DD; RSS → blogwatcher → daily `blog-ingest` pipeline) |
| X/Twitter | [@handle](https://x.com/handle) | Tracked in `x-accounts.yaml` (if applicable) |
```
- Recent notable work: Scan the RSS feed output (curl -s "FEED_URL" | head -30) for significant recent posts. If something substantial is found (major technical post, research result, framework release), add a relevant section to the entity page with key details. Don't add trivial posts.
- Update frontmatter: Bump updated: date, add new sources, add any new tags
- Update Related/Sources sections: Add cross-links to new concepts, append new source URLs
- New tags → SCHEMA.md: If a genuinely new tag is added to frontmatter, add it to SCHEMA.md taxonomy FIRST
- Update index.md: Enrich the entity's index entry with new monitoring/blog info and notable work
- Update log.md: Prepend log entry (use execute_code + Python with open() prepend to avoid --- anchor trap — see wiki-graph-health skill §H5)
- Commit everything together: cd ~/ai-topics && git add config/feeds/ wiki/ && git commit -m "config+wiki: add Blog Name RSS + entity enrichment" && git push

Pitfalls

OPML is NOT the blogwatcher DB: Adding to OPML does NOT add to the blogwatcher SQLite database. The next full scan will auto-discover it.
Blogwatcher-cli does NOT follow HTTP redirects: If the feed URL redirects, it will fail at scan time. Verify the final destination URL.
Webflow sites: Often serve RSS at /blog/rss.xml rather than root-level paths. The HTML <head> may not include a <link type="application/rss+xml"> tag even though the feed exists.
Corporate blogs: RSS at root, not under /blog/: Sierra (sierra.ai/rss.xml) and OpenAI (developers.openai.com/rss.xml) both serve RSS from the domain root. Always check root-level paths (/rss.xml, /feed.xml) BEFORE checking blog subdirectories.
Engineering blogs on separate subdomains: Some companies host their engineering blog on a different subdomain from their marketing blog (e.g., Ramp's engineering blog is at builders.ramp.com, not ramp.com/blog). Always check the company's job postings, GitHub org, or search "company engineering blog" to discover these before concluding no blog exists.
Scrape-selector blogs: skip OPML: If a blog has no RSS feed and uses --scrape-selector, do NOT add it to the OPML. OPML requires xmlUrl. Track it only in the blogwatcher DB. Consider migrating to sitemap-based monitoring (see Sitemap-Based Monitoring section) for greater reliability.
Always mark initial backlog as read: After adding a new blog, run read-all --blog "Name" --yes to prevent the daily scan from re-processing hundreds of historical articles.
Migrate scrape-selector → sitemap when possible: HTML scraping is fragile. If the site has a sitemap with blog URLs and lastmod dates, migrate to sitemap_monitor.py. Remove from blogwatcher DB, add to sitemap_monitor SOURCES list, and add to OPML Company group with type="sitemap".
Commit only config/feeds/: Adding a blog is a config change, not a wiki change. Do not git add wiki/ unless you also made wiki changes this session.

Corporate Tech Blog Feed Discovery

Corporate tech blogs (Anthropic Engineering, OpenAI Developers, Sierra, etc.) often have non-standard RSS setups. Follow this extended discovery workflow:

Discovery Priority (updated)

Check HTML <link> tags for application/rss+xml or application/atom+xml

Try root-level paths FIRST — corporate blogs often place feeds at the domain root, NOT under /blog/:

curl -sI "https://example.com/rss.xml" | head -1      # ← TRY THIS FIRST
curl -sI "https://example.com/feed.xml" | head -1
curl -sI "https://example.com/atom.xml" | head -1
curl -sI "https://example.com/index.xml" | head -1

Then try the blog subdirectory:

curl -sI "https://example.com/blog/rss.xml" | head -1
curl -sI "https://example.com/blog/feed.xml" | head -1

Check the sitemap for blog post URLs — many corporate sites expose all blog URLs with lastmod dates:
```
curl -s "https://example.com/sitemap.xml" | grep -i "blog\|engineering"
```
Fall back to HTML scraping with --scrape-selector if no RSS exists.

Real-World Examples

Blog	RSS URL	Discovery Method
OpenAI Developers Blog	`https://developers.openai.com/rss.xml`	`<link rel="alternate">` in HTML head (root-level, not `/blog/rss.xml`)
Sierra Blog	`https://sierra.ai/rss.xml`	Root-level trial-and-error (not advertised in HTML)
Anthropic Engineering	NONE	HTML scrape-selector (`article a`) — sitemap at `anthropic.com/sitemap.xml` has all `/engineering/` URLs

HTML Scrape-Selector Fallback

When no RSS feed exists, use blogwatcher-cli's --scrape-selector:

blogwatcher-cli add "Blog Name" "https://example.com/blog" --scrape-selector "article a"

Selector guidance:

Start broad (article a) and verify with a scan
If the selector catches too many non-article links, refine it
Test immediately after adding: blogwatcher-cli scan "Blog Name"
Common selectors that work: article a, a[href^="/blog/"], h2 a, .post-title a

Successful examples:

article a → Anthropic Engineering (found 27 articles)
article h2 a → typical blog listing pattern

Post-Addition: Mark Initial Backlog as Read

After adding a new blog, the first scan finds ALL historical articles. Mark them as read so future scans only highlight new content:

blogwatcher-cli read-all --blog "Blog Name" --yes

Sitemap-Based Monitoring (Advanced)

For high-value corporate blogs without RSS (e.g., Anthropic Engineering), sitemap monitoring is more reliable than HTML scraping. The sitemap_monitor.py script handles this automatically.

Script: ~/ai-topics/scripts/sitemap_monitor.py (source of truth) → ~/.hermes/scripts/sitemap_monitor.py (cron execution copy)

How it works:

Fetches the site's sitemap.xml
Filters URLs matching a pattern (e.g., /engineering/)
Compares against previously seen URLs stored in ~/.hermes/processed_{name}.json
Scrapes new articles with BeautifulSoup + httpx
Saves raw articles to wiki/raw/articles/
Outputs checkpoint JSON to ~/.hermes/cron/data/sitemap_monitor/latest.json

Cron integration: sitemap-monitor job (ID: c7890b6e0e19) runs daily at 0 6 * * * UTC (JST 15:00) with no_agent=True. Raw articles are later picked up by the dreaming pipeline (18:00 UTC).

SOURCE config template (each company gets one entry):

{
    "name": "Company Blog",                   # Display name for logging
    "url": "https://company.com/blog",         # Blog homepage
    "sitemap_url": "https://company.com/sitemap.xml",  # Sitemap URL
    "url_pattern": "/blog/",                   # URL filter (e.g. "/blog/", "/engineering/", "/news/")
    "file_prefix": "company-name",             # Used in raw article filenames: {date}_{prefix}_{slug}.md
    "title_suffixes": [" | Company", " - Company"],  # Patterns to strip from <title> tags
    "state_file": os.path.expanduser("~/.hermes/processed_company_blog.json"),
}

Field notes:

file_prefix — required. Prevents filename collisions between sources.
title_suffixes — optional but recommended. Many corporate blogs append " | Company Name" to <title>. Stripping these keeps downloaded article titles clean.
url_pattern — must match blog post URLs exactly. If the blog is at /blog/post-slug, use /blog/. If at /news/post-slug, use /news/. Too broad a pattern (e.g., /) matches every page on the site.
state_file — one per source, unique paths. Two sources sharing one file corrupt dedup.

Adding a new sitemap-based source:

Edit sitemap_monitor.py — add an entry to the SOURCES list following the template above. Verify url_pattern by checking the sitemap.
Add to OPML Company group with type="sitemap"
Do NOT add to blogwatcher DB (sitemap monitor is independent)
Copy updated script to ~/.hermes/scripts/
Commit: cd ~/ai-topics && git add config/feeds/ scripts/ && git commit && git push
First run scrapes ALL historical articles (state file seeds the seen-URL set). Subsequent cron runs only find new posts.

Company Blog Monitoring Tiers

When ingesting a large list of companies (e.g., from Paraform Talent Density Index, YC batches, startup rankings), prioritise by tier:

Tier 3 — Non-AI companies on the list: E-commerce, wholesale marketplaces, billing platforms, generic analytics. Skip or add scrape-selector if they occasionally publish AI content.

Tier X — No blog found: Some companies simply don't have a tech blog. Mark as no_blog in the entity page and move on.

Batch ingestion workflow:

Run references/rss-batch-discovery.md on all blog URLs → get RSS found/not-found split
Add RSS-found blogs to blogwatcher DB + OPML in one batch (chain blogwatcher-cli add commands)
For RSS-not-found, check sitemaps → add Tier 1/2 to sitemap_monitor.py SOURCES
Add sitemap sources to OPML Company group with type="sitemap"
Run a manual first scan to seed state files
Commit config + scripts together

Migrating from scrape-selector to sitemap

# 1. Remove from blogwatcher DB
blogwatcher-cli remove "Anthropic Engineering" --yes

# 2. Add to sitemap_monitor.py SOURCES list
# 3. Add to OPML Company group with type="sitemap"
# 4. Run sitemap_monitor.py to seed the state file
/opt/data/.hermes/venv/bin/python sitemap_monitor.py

This avoids the fragility of CSS selectors breaking on site redesigns.

Bulk Adding Blogs from Curated Lists

When a reference article or newsletter recommends blogs to add, follow this workflow to keep both the blogwatcher DB and the OPML in sync.

Workflow Steps

Extract blog recommendations from the source article using web_extract or curl.
Compare against current blogwatcher DB: /opt/data/bin/blogwatcher-cli blogs — produce a list of missing blogs.
For each missing blog, add to blogwatcher DB:
```
/opt/data/bin/blogwatcher-cli add "Blog Name" "https://example.com"
```
blogwatcher-cli auto-discovers RSS at scan time, but the DB stores feed_url=None until then.

Discover RSS/Atom feed URLs for each new blog. See references/feed-discovery-patterns.md for platform-specific patterns.

# Quick check: look for <link> tags
curl -sL https://example.com | grep -iE '(rss|atom|feed)' | grep -oP 'href="[^"]*\.(xml|rss|atom)"'

Update the OPML at ~/ai-topics/config/feeds/blogs.opml with proper <outline> entries including the discovered xmlUrl. Use patch to insert entries before the closing </outline> tag:
```
<outline type="rss" text="Blog Name" title="Blog Name" xmlUrl="https://example.com/feed.xml" htmlUrl="https://example.com/" />
```

Verify OPML validity:

python3 -c "import xml.etree.ElementTree as ET; ET.parse('~/ai-topics/config/feeds/blogs.opml')"

Commit and push:

cd ~/ai-topics && git add config/feeds/blogs.opml && git commit -m "wiki: add N blogs from <source>" && git push

Pitfalls

blogwatcher-cli add does NOT discover feeds immediately. It sets feed_url=None until the next scan. The OPML should still have the explicit xmlUrl to serve as the source of truth.
Blogger/Blogspot feeds sometimes use an ID-based path (feeds/posts/default) rather than the blog name. The ?alt=rss query param also works.
Substack feeds accept both https://name.substack.com/feed and https://name.substack.com/feed.xml.
Inactive blogs (no posts in 3+ years) should be skipped — mark them as blocked and note the reason.
Not all blogs have RSS. For these, either skip or use --scrape-selector if the site has a predictable HTML structure.
Keep the OPML and blogwatcher DB in sync manually — they are independent stores. Adding to one does not update the other.

Reference

See references/feed-discovery-patterns.md for detailed platform feed URL patterns and the full ClickHouse curated list feed table.

Troubleshooting Feed Failures

Common issues when scanning feeds:

301/302/308 redirects: blogwatcher-cli does NOT follow redirects. Fix by removing the old entry and re-adding with the correct URL (often www. prefix or different path).
406 Forbidden / 404 Not Found: The feed URL in OPML may be wrong. Try discovering the actual feed URL via curl -sL <blog_url> and looking for <link type="application/rss+xml"> or <link type="application/atom+xml"> tags.
Connection timeout: The site may be down or blocking the request. Consider removing from the tracking list.

Quarto on GitHub Pages: False Positive RSS Feeds

Key insight: This is a false positive, not a regular broken feed. The HTML actively advertises an RSS feed that was never produced by the build.

Detection workflow:

Check the feed URL: curl -sI https://blog.example.com/index.xml | head -5 — if 404, the feed does not exist despite the HTML <link> tag.
Verify the deployed branch: curl -sL "https://api.github.com/repos/owner/repo/git/trees/gh-pages?recursive=1" | python3 -c "import sys,json; [print(t['path']) for t in json.load(sys.stdin).get('tree',[]) if 'xml' in t['path'].lower()]" — if index.xml is absent from the tree, the build never produced it.
Confirm by checking the site config: _quarto.yml listing section with feed: true + URL base path.

Action: If confirmed broken, consider:

Re-adding with --scrape-selector fallback if the blog has predictable HTML structure
Filing an issue with the blog author about the missing feed
Removing from OPML if scraping is not viable

Important: OPML vs DB are independent

blogwatcher-cli maintains its own SQLite database at ~/.blogwatcher-cli/blogwatcher-cli.db. This is separate from the OPML file. Two critical implications:

Removing a URL from the OPML does NOT remove it from the blogwatcher-cli DB. The DB still tracks and scans it independently.
Importing an OPML adds feeds but does NOT remove feeds no longer in the OPML. Each blogwatcher-cli import is additive.

If a feed fails in the daily RSS scan, check the blogwatcher-cli DB, not just the OPML:

# Check if a blog is in the DB
blogwatcher-cli blogs | grep "failing-blog.com"

# Remove from DB
blogwatcher-cli remove "failing-blog.com" --yes

Troubleshooting: When CLI Commands Return Empty/Unreadable Output

Sometimes blogwatcher-cli blogs or blogwatcher-cli articles return empty or garbled output (encoding issues, terminal rendering problems). Fall back to direct SQLite queries:

# List all tracked blogs with last scan date
sqlite3 ~/.blogwatcher-cli/blogwatcher-cli.db \
  "SELECT name, url, feed_url, last_scanned FROM blogs ORDER BY name;"

# List articles for a specific blog (newest first)
sqlite3 ~/.blogwatcher-cli/blogwatcher-cli.db \
  "SELECT a.title, a.url, a.published_date, a.is_read FROM articles a JOIN blogs b ON a.blog_id = b.id WHERE b.name = 'blogname.com' ORDER BY a.published_date DESC LIMIT 20;"

# Count articles per blog
sqlite3 ~/.blogwatcher-cli/blogwatcher-cli.db \
  "SELECT b.name, COUNT(a.id) as article_count FROM blogs b LEFT JOIN articles a ON b.id = a.blog_id GROUP BY b.name ORDER BY article_count DESC;"

# Find unread article count
sqlite3 ~/.blogwatcher-cli/blogwatcher-cli.db \
  "SELECT COUNT(*) FROM articles WHERE is_read = 0;"

# Check DB schema
sqlite3 ~/.blogwatcher-cli/blogwatcher-cli.db ".schema"

Tables: blogs (id, name, url, feed_url, scrape_selector, last_scanned), articles (id, blog_id, title, url, published_date, discovered_date, is_read, categories), schema_migrations.

Fix workflow for broken feeds

# 1. Remove the broken entry from the DB (not just OPML)
blogwatcher-cli remove "broken-blog.com" --yes

# 2. Verify the correct feed URL
curl -sL -o /dev/null -w "%{http_code}" "https://blog.com/feed.xml"

# 3. Re-add with correct URL
blogwatcher-cli add "broken-blog.com" "https://blog.com" --feed-url "https://blog.com/correct-feed.xml"

Excluding Blogs for Content Reasons (Off-Domain)

Full Removal Workflow

Verify the blog is in OPML and DB: grep -n "blog-name" ~/ai-topics/config/feeds/blogs.opml and /opt/data/bin/blogwatcher-cli blogs | grep "blog-name"

Remove from OPML: Use patch to delete the <outline> line. After removal, validate:

python3 -c "import xml.etree.ElementTree as ET; ET.parse('/opt/data/ai-topics/config/feeds/blogs.opml'); print('OPML OK')"

Remove from blogwatcher DB (always do both — OPML and DB are independent):
```
/opt/data/bin/blogwatcher-cli remove "Blog Name" --yes
```
Check for entity page: search_files path=~/wiki/entities pattern="author-or-domain-name"
- If entity page exists: update it with a Monitoring section marking RSS as excluded
- If no entity page: skip — nothing to update in wiki

Update entity page (if one exists):

Remove the RSS URL from the infobox if present

Add or update a Monitoring section:

## Monitoring

| Source | Method | Status |
|--------|--------|--------|
| RSS Feed | — | ❌ Excluded (YYYY-MM-DD) — AI content is rare; RSS removed from blogwatcher + OPML to reduce noise |

Bump updated: date in frontmatter

Update wiki/index.md: Append exclusion note to the entity's index entry (e.g., RSS excluded (YYYY-MM-DD, AI content rare))

Update wiki/log.md: Prepend a log entry documenting what was removed and why. Use python3 prepend to avoid --- frontmatter anchor traps:

python3 -c "
with open('/opt/data/wiki/log.md') as f: content = f.read()
entry = '## [YYYY-MM-DD] config | RSS exclusion — Name\n\n...\n\n'
with open('/opt/data/wiki/log.md', 'w') as f: f.write(entry + content)
"

Commit and push:

cd ~/ai-topics && git add config/feeds/blogs.opml wiki/ && git commit -m "config: exclude Blog Name from RSS monitoring (off-domain content)" && git push

Pitfalls

OPML and blogwatcher DB are independent — removing from one does NOT remove from the other. Always do both steps.
Don't delete entity pages — the exclusion is at the RSS level only. The entity page records that the person/org exists and why they're excluded.
Don't use blogwatcher-cli read-all before removing — since the blog is being removed entirely, there's no need to mark old articles as read.
Exclusion is reversible — if the author later starts writing AI content, re-add by following the Check-and-Add workflow. The entity page's Monitoring section documents the exclusion reason and date, making it easy to revisit.
Commit includes wiki/ when entity/index/log were updated, unlike simple OPML-only config commits.
Auto-discovers RSS/Atom feeds from blog homepages when no --feed-url is provided.
Falls back to HTML scraping if RSS fails and --scrape-selector is configured.
Categories from RSS/Atom feeds are stored and can be used to filter articles.
Import blogs in bulk from OPML files exported by Feedly, Inoreader, NewsBlur, etc.
Database stored at ~/.blogwatcher-cli/blogwatcher-cli.db by default (override with --db or BLOGWATCHER_DB).
Use blogwatcher-cli <command> --help to discover all flags and options.
blogwatcher-cli does NOT follow HTTP redirects — this is the #1 cause of scan failures when importing from OPML files with outdated URLs.

blogwatcher

More from this repository

More from this repository

Blogwatcher

Installation

Docker with persistent storage

Migrating from the original blogwatcher

Common Commands

Managing blogs

Scanning and reading

Environment Variables

Example Output

Reddit RSS Feeds

YouTube Channel Monitoring

Adding a YouTube Channel to Monitoring

Pitfalls

Environment-Specific Notes (exe.dev VM)

YouTube Channel Monitoring

YouTube RSS URL Pattern

Add to OPML

Add to blogwatcher DB

Verify and mark backlog

Create wiki entity page

Pitfalls

Check-and-Add Single Feed (One-Off Request)

Workflow

Pitfalls

Corporate Tech Blog Feed Discovery

Discovery Priority (updated)

Real-World Examples

HTML Scrape-Selector Fallback

Post-Addition: Mark Initial Backlog as Read

Sitemap-Based Monitoring (Advanced)

Company Blog Monitoring Tiers

Migrating from scrape-selector to sitemap

Bulk Adding Blogs from Curated Lists

Workflow Steps

Pitfalls

Reference

Troubleshooting Feed Failures

Quarto on GitHub Pages: False Positive RSS Feeds

Important: OPML vs DB are independent

Troubleshooting: When CLI Commands Return Empty/Unreadable Output

Fix workflow for broken feeds

Excluding Blogs for Content Reasons (Off-Domain)

Full Removal Workflow

Pitfalls

Blogwatcher

Installation

Docker with persistent storage

Migrating from the original blogwatcher

Common Commands

Managing blogs

Scanning and reading

Environment Variables

Example Output

Reddit RSS Feeds

YouTube Channel Monitoring

Adding a YouTube Channel to Monitoring

Pitfalls

Environment-Specific Notes (exe.dev VM)

YouTube Channel Monitoring

YouTube RSS URL Pattern

Add to OPML

Add to blogwatcher DB

Verify and mark backlog

Create wiki entity page

Pitfalls

Check-and-Add Single Feed (One-Off Request)

Workflow

Pitfalls

Corporate Tech Blog Feed Discovery

Discovery Priority (updated)

Real-World Examples

HTML Scrape-Selector Fallback

Post-Addition: Mark Initial Backlog as Read

Sitemap-Based Monitoring (Advanced)

Company Blog Monitoring Tiers

Migrating from scrape-selector to sitemap

Bulk Adding Blogs from Curated Lists