x-com

name	x-com
description	Use when browsing x.com (Twitter), reading the timeline, posting, replying, liking, or checking DMs. Triggered by requests to post on X, browse the X feed, comment on tweets, or read/reply to X DMs.
allowed-tools	mcp__byob__browser_list_tabs, mcp__byob__browser_navigate, mcp__byob__browser_read, mcp__byob__browser_get_html, mcp__byob__browser_click, mcp__byob__browser_type, mcp__byob__browser_press_key, mcp__byob__browser_scroll, mcp__byob__browser_wait_for, mcp__byob__browser_screenshot, mcp__byob__browser_close_tab, mcp__byob__browser_switch_tab, Bash(git:*), Read, Write, Edit, Grep, Glob, Agent
user-invocable	true

X (Twitter) Activity

Drives the user's logged-in Chrome via BYOB. User handle: @ValorEngels.

Default Behavior (no arguments)

Run all three tasks in order:

1. Check DMs. Reply to any messages that need attention
2. Write a post. About recent work from git history. A second post in the same day is fine if there's a real second angle.
3. Browse timeline (For You). Like 20-50 posts, reply to up to 15, follow new people you haven't seen before. Curate the feed actively.

If arguments are given, interpret them and do only what's asked.

Nothing goes live — post, reply, or comment — without passing both gates in order: first Skill('de-slop') (fresh-context review of the draft file only — removes AI-writing tells, blocks hollow drafts), then Skill('authenticity-pass'); the full gate procedure is in references/posting.md.

Execute, don't pause. Render drafts inline and continue to publish in the same turn. Only stop on hard tool failure with no fallback, or a finding that contradicts the skill's premise (e.g. "no DMs need replies" → skip Task 1).

Task guides (load on demand)

Each task's full procedure lives in a reference file. Load only what the current run needs:

Load...	When...
references/dms.md	Task 1: reading the DM inbox, opening threads, drafting and sending replies, updating the knowledge base
references/posting.md	Task 2: what works/dies on this feed, voice rules, the receipt self-reply, subagent drafting, persona cold-read loop, authenticity gate, publish
references/timeline-engagement.md	Task 3: volume targets, For You curation, liking, following, reply screening and drafting loop — plus editing/deleting posts

Prerequisites

Same BYOB setup as /linkedin (see that skill for the full preconditions). Verify with:

cd ~/.byob && bun run doctor

Then sanity-check from inside the agent:

mcp__byob__browser_list_tabs    # must return at least one tab

User must be logged into X in that Chrome session.

Real-Chrome scheduler gate (requires_real_chrome=True)

X driving real Chrome must be serialized against other real-Chrome sessions. Bridge-spawned sessions get the flag automatically via agent.byob_skill_triggers (the registry includes X triggers). CLI-spawned sessions must pass --needs-real-chrome:

valor-session create --role eng --project-key valor --needs-real-chrome --message "check my X DMs"

Tab discovery (do this first)

browser_list_tabs   →   look for any tab whose URL contains "x.com" (or "twitter.com")

Pick the first match → that's your tabId. If no tab, browser_navigate(url="https://x.com/home").

DOM model

X uses a stable accessibility tree. Element names like "Reply", "Like", "Liked", "Repost", "Reposted", "Post text", "Direct Messages" are reliable. Hashed CSS classes change frequently; do not rely on them. Use data-byob-idx via the selector: "byob:idx=N" workflow.

The byob:idx workflow

1. browser_read(url, reuseTab=true, screens=N) returns interactiveElements: [{idx, tag, role, name, bounds}, ...].
2. Find your target by name. On X the post text is captured directly in the <article>'s name attribute. This is a big advantage over LinkedIn (post bodies are readable from the IE list).
3. Click with browser_click(tabId, selector="byob:idx=<idx>").
4. Re-read after every DOM-mutating click. The interactiveSessionTag changes and old indices invalidate.

When multiple IEs map to the same logical control, prefer tag: "button".

X-specific gotchas (verified live)

• Prefer data-testid selectors over byob:idx on X. The home timeline easily blows past 1000 IEs and byob:idx=N clicks fail with selector_not_found even right after a fresh read. The reliable handles are:
  • [data-testid="tweetTextarea_0"]. The compose / reply textbox (works on /home, /compose/post, and any post page reply box)
  • [data-testid="tweetButtonInline"]. The submit button. Same testid for posts and replies (button text is "Post" on /home, "Reply" on a post page; testid doesn't change).
  • [data-testid="like"]. The like button. Often reports element_not_visible because the action bar overlay covers the click point. Pass force: true.
  • article[data-testid="tweet"]. Full tweet container; child a[href*="/status/"] is the permalink.
• <article> IEs include the full post text in name. Useful for cheap triage from the IE list before navigating into individual posts.
• Best path to read a post body in full: extract /handle/status/<id> URLs from the timeline HTML (grep -oE 'href="/[^/]+/status/[0-9]+"'), then browser_navigate to each. The post text shows up in the page title ("(N) Author on X: "...full text..." / X"). Fastest way to read the body.
• "Want more people to see your reply?" Premium upsell modal appears after every successful reply submit. Dismiss with browser_press_key(key="Escape") before the next click. Otherwise subsequent selectors get blocked.
• Inline composer on /home - data-testid="tweetTextarea_0" is live and editable right on the home timeline. Much easier than LinkedIn's broken portal modal.
• Action button names carry counts in IE-list name fields (e.g. "977 Likes. Like", "977 Likes. Liked"). If you do fall back to byob:idx, match on the suffix (Like/Liked, Repost/Reposted).
• "See new posts" banner at top of feed. Click to refresh the For You tab when timeline returns empty (occasionally happens after navigation).

Notes

• Reuse the same tabId across the session. Discover once at the start.
• Screenshots over 1MB fail. Use format="jpeg" and quality=50-60.
• No fallback browser surface. If BYOB transport errors mid-session: cd ~/.byob && bun run doctor to repair, then retry.