| name | librarian |
| description | Reviews, curates, and maintains the Forge library of agents, skills, and templates. Performs deduplication analysis, staleness detection, quality promotion, and orphan reference checking. Produces structured review reports with actionable recommendations for merging, archiving, or promoting library items.
Use this skill when the user wants to review the library, clean up agents or skills, check what's available, find duplicates, trim unused items, see library statistics, or says "what's in my library?" Also triggers on scheduled review intervals or when the library grows beyond 20 items.
Do NOT use for creating new agents (use Agent Creator), creating skills (use Skill Creator), or planning teams (use Mission Planner).
|
Librarian
The curation and maintenance engine for the Forge library. Audits inventory, detects quality issues, and produces actionable review reports to keep the library lean, accurate, and useful.
Expert Vocabulary Payload
Deduplication & Similarity: deduplication, semantic similarity, tag overlap, merge candidate, near-duplicate detection, Jaccard coefficient, synonym clustering
Lifecycle & Quality: quality promotion, lifecycle stage, quality tier, curation, retention policy, staleness threshold, maturation criteria
Inventory & Structure: orphan detection, dependency graph, index integrity, catalog maintenance, inventory audit, library hygiene, reference traversal
Usage & Telemetry: usage frequency, usage telemetry, usage decay, access recency, impact-weighted frequency, archive candidate
Anti-Pattern Watchlist
Hoarder Library
- Detection: Library exceeds 50 items with fewer than 20% showing any usage in the past 90 days. The index grows monotonically — items are added but never removed.
- Why it fails: Search and matching degrade as irrelevant items dilute results. Users lose trust in library quality when most items are stale or broken. Cognitive overhead increases with every unused entry.
- Resolution: Flag all items with zero usage in the past 90 days for review. Present the list sorted by staleness (oldest unused first). Recommend archive for items with no usage data at all and no recent modification.
Premature Deletion
- Detection: Item has low usage frequency (fewer than 3 uses total) but the uses that exist are high-impact — referenced in complex blueprints, used for critical domains, or explicitly requested by name.
- Why it fails: Specialized items (security auditors, compliance reviewers, incident responders) are infrequently needed but irreplaceable when they are. Deleting them forces recreation from scratch at the worst possible time.
- Resolution: Before recommending removal of any low-frequency item, check usage context. If any usage occurred within a complex team blueprint or critical domain, flag as "low-frequency but high-value" and recommend keeping. Apply a higher staleness threshold (180 days instead of 90) for items in critical domains like security, compliance, and incident response.
Duplicate Blindness
- Detection: Two or more items share more than 70% tag overlap, or their descriptions are semantically similar (same domain, same deliverables, similar SOPs). Common pattern: items created at different times for the same purpose with slightly different names (e.g., "api-developer" and "backend-engineer").
- Why it fails: Users get inconsistent results depending on which duplicate is matched. Quality improvements to one copy do not propagate to the other. Library size inflates without capability gain.
- Resolution: Recommend merge. Keep the version with the higher quality tier. If tied, keep the more recently modified version. If still tied, keep the version with more usage. Present both items side-by-side so the user can make the final call.
Orphan Accumulation
- Detection: A template's
roles array references agent names that do not exist in index.json agents. This happens when agents are deleted or renamed without updating the templates that reference them.
- Why it fails: Templates that reference nonexistent agents will fail at runtime. Users who load the template get errors or incomplete teams. Trust in the library erodes.
- Resolution: For each orphaned reference, present two options: (1) create the missing agent, or (2) update the template to remove or replace the reference. Flag the severity — a template with one orphan out of four roles is recoverable; a template where all roles are orphaned should be archived.
Quality Stagnation
- Detection: Items remain at "untested" quality tier for more than 30 days despite having one or more recorded uses. Items at "tested" for more than 60 days with continued active usage and no modifications.
- Why it fails: Quality tiers lose meaning if they never advance. Users cannot distinguish battle-tested agents from first drafts. The promotion system exists to build confidence — stagnation defeats that purpose.
- Resolution: Automatically recommend promotion based on usage thresholds. Present the evidence (usage count, time at current tier, modification history) and let the user approve the promotion.
Behavioral Instructions
Phase 1: Load Inventory
-
Read library/index.json for the current catalog.
PARSE: total item count, items by type (agents, skills, templates), items by domain, items by quality tier.
IF index is empty or missing: Report "Library is empty. Nothing to review." and STOP.
OUTPUT: Inventory summary object.
-
Read library/usage-log.jsonl for usage data.
PARSE: per-item usage count, last-used timestamp, action history (loaded, created, modified, archived, promoted).
IF usage log is empty or missing: Note "No usage data available. Staleness and promotion checks will be limited to metadata only."
OUTPUT: Usage data map keyed by item path.
Phase 2: Run Checks
-
Deduplication check.
FOR each pair of items within the same type (agent-agent, skill-skill, template-template):
a. Calculate tag overlap: count of shared tags divided by count of union of tags (Jaccard coefficient).
b. IF tag overlap > 0.70: Flag as merge candidate.
c. IF tag overlap > 0.50 AND same domain: Flag as potential merge candidate (review manually).
d. Compare descriptions for semantic similarity: same domain + similar deliverables or purpose.
OUTPUT: List of merge candidate pairs with overlap scores.
-
Staleness check.
FOR each item in the index:
a. Find most recent usage log entry (any action type).
b. Calculate days since last activity.
c. IF no usage data exists AND item quality is "untested": Flag as stale (unknown — never used).
d. IF last activity > 90 days (default threshold): Flag as stale.
e. IF last activity > 90 days BUT item is in a critical domain (security, compliance, incident-response): Apply extended threshold of 180 days instead.
f. Usage staleness and evidence staleness are independent axes — an item can be actively used and still cite outdated research. See check 8 (Evidence-currency check) below; do not skip it just because an item passes this check.
OUTPUT: List of stale items with days-since-last-activity and recommended action.
-
Quality promotion check.
FOR each item with a quality tier:
a. Count total "loaded" actions in usage log.
b. Check for any "modified" actions in usage log.
c. IF quality is "untested" AND loaded count >= 5: Recommend promotion to "tested."
d. IF quality is "tested" AND loaded count >= 10 AND no "modified" actions after initial creation: Recommend promotion to "iterated."
e. IF quality is "iterated" AND loaded count >= 20 AND user has explicitly reviewed: Eligible for "curated" (requires manual approval).
f. Evidence-currency issues (check 8) do not block a usage-based promotion, but surface them alongside the recommendation — a promotion candidate with unverified claims still needs a correction pass.
OUTPUT: List of promotion candidates with current tier, recommended tier, and evidence.
-
Orphan detection.
FOR each template in index:
a. Read the template's roles array.
b. FOR each role name: Check if an agent with that name exists in the index agents array.
c. IF agent not found: Flag as orphaned reference.
OUTPUT: List of orphaned references with template name, missing agent name, and severity.
-
Core overlap check.
FOR each library item:
a. Compare against the core skills (mission-planner, agent-creator, skill-creator, librarian).
b. IF a library item's described functionality substantially overlaps with a core skill: Flag as core overlap.
OUTPUT: List of items that may duplicate core skill functionality.
-
Evidence-currency check.
Evidence baseline: July 2026, targeting Claude 4.5+/5. Apply this check to every item that cites research, states a quantitative claim, or gives model-behavior guidance — it is independent of the usage-based staleness check above.
FOR each such item:
a. IF the item cites a source: Trace the citation to docs/research/source-index.md. IF it cannot be traced: Flag as unverified citation.
b. IF the item states a quantitative claim tied to a citation: Confirm the number appears in the cited source. IF it does not: Flag as unsupported number.
c. IF the item presents a Forge convention (team size, vocabulary payload counts, iteration caps, identity length, etc.) as a research finding rather than a labeled convention: Flag as mislabeled convention — recommend an explicit "Forge design standard" label.
d. IF the item contains model-behavior guidance older than ~18 months with neither re-confirmation against current-generation evidence nor a "Forge design standard" label: Flag as needing re-confirmation.
e. Regardless of citation status, check the two current-model guidance rules (see references/review-criteria.md — Evidence Currency Criteria):
- Reasoning-echo instruction: does the item tell an agent to narrate or print its internal reasoning? Flag if so.
- Rule-stuffing: does the item substitute a long enumerated rule list for brief goal/boundary/verification framing? Flag if so.
OUTPUT: List of evidence-currency issues with item name, issue type, and recommended fix. These are findings, not blockers — see step 9.
Phase 3: Produce Report
-
Compile review report.
Assemble all findings into a structured markdown report (see Output Format below).
Include:
- Summary statistics
- Merge recommendations (with which item to keep and why)
- Archive/removal recommendations (with reason and staleness data)
- Quality promotion recommendations (with usage evidence)
- Orphaned references (with fix options)
- Core overlap warnings
- Evidence-currency issues (with issue type and recommended fix)
IF no issues found: Produce a clean report with summary statistics only.
-
Present report and WAIT for user approval.
Do NOT modify any files until the user explicitly approves.
IF user approves all recommendations: Proceed to Phase 4.
IF user approves selectively: Execute only the approved changes.
IF user rejects: STOP. No changes made.
Phase 4: Execute Changes
-
Execute approved changes.
FOR each approved merge:
a. Remove the lower-quality item from index.json.
b. Optionally: copy unique tags from the removed item to the kept item.
c. Delete or archive the removed item's file.
FOR each approved archive:
a. Remove the item from index.json.
b. Move the item's file to library/archive/ (create directory if needed).
FOR each approved promotion:
a. Update the item's quality field in index.json.
FOR each approved orphan fix:
a. Update the template's roles array in index.json as directed.
Evidence-currency fixes are content edits (correcting a claim, adding a label, rewriting a rule-stuffed instruction) made directly in the item's file — they do not have an index.json field of their own.
Update index.json updated timestamp.
-
Log all changes.
FOR each change executed:
Append a usage-log.jsonl entry with:
ts: current ISO 8601 timestampitem: path of the affected itemtype: item type (agent, skill, template)action: "archived" for removals, "promoted" for promotions, "modified" for merges, orphan fixes, and evidence-currency correctionscontext: "librarian"
Output Format
The review report uses structured markdown:
# Library Review Report
**Date:** [ISO 8601 date]
**Total items:** [count] ([agents] agents, [skills] skills, [templates] templates)
## Summary Statistics
| Domain | Agents | Skills | Templates | Total |
|--------|--------|--------|-----------|-------|
| [domain] | [n] | [n] | [n] | [n] |
| ... | ... | ... | ... | ... |
### Quality Distribution
| Tier | Count | Percentage |
|------|-------|------------|
| Curated | [n] | [%] |
| Iterated | [n] | [%] |
| Tested | [n] | [%] |
| Untested | [n] | [%] |
## Merge Candidates
### [Item A] + [Item B]
- **Tag overlap:** [%]
- **Recommendation:** Keep [Item A] (reason: higher quality tier / more recent / more used)
- **Action required:** Merge and remove [Item B]
## Archive Candidates
### [Item Name]
- **Last activity:** [date] ([N] days ago)
- **Total uses:** [count]
- **Reason:** [Unused for >90 days / Never used / Duplicates core skill]
- **Action required:** Archive to library/archive/
## Quality Promotions
### [Item Name]
- **Current tier:** [tier]
- **Recommended tier:** [tier]
- **Evidence:** [N] uses, [N] days at current tier, [modified/unmodified]
## Orphaned References
### Template: [template-name]
- **Missing agent:** [agent-name]
- **Options:** Create agent / Remove from template / Replace with [alternative]
## Evidence Currency Issues
### [Item Name]
- **Issue type:** [Unverified citation / Unsupported number / Mislabeled convention / Needs re-confirmation / Reasoning-echo instruction / Rule-stuffing]
- **Detail:** [what was found and where]
- **Recommended fix:** [trace or remove citation / correct the number / add "Forge design standard" label / re-confirm against current-generation evidence / remove the reasoning-echo instruction / replace with goal-boundary-verification framing]
## No Issues
[Only shown if all checks pass]
Library is clean. No merge candidates, stale items, promotions, orphans, or evidence-currency issues detected.
Examples
Example 1: Library With Issues
Scenario: Library contains 12 agents, 3 skills, and 2 templates across software and marketing domains.
Review report output:
# Library Review Report
**Date:** 2026-03-28T12:00:00Z
**Total items:** 17 (12 agents, 3 skills, 2 templates)
## Summary Statistics
| Domain | Agents | Skills | Templates | Total |
|--------|--------|--------|-----------|-------|
| software | 8 | 2 | 1 | 11 |
| marketing | 4 | 1 | 1 | 6 |
### Quality Distribution
| Tier | Count | Percentage |
|------|-------|------------|
| Curated | 0 | 0% |
| Iterated | 1 | 8% |
| Tested | 3 | 25% |
| Untested | 8 | 67% |
## Merge Candidates
### api-developer + backend-engineer
- **Tag overlap:** 78% (shared: api, rest, backend, nodejs, database, testing; unique to api-developer: openapi; unique to backend-engineer: microservices)
- **Recommendation:** Keep backend-engineer (reason: higher quality tier — tested vs untested)
- **Action required:** Merge tags and remove api-developer
### content-writer + copywriter
- **Tag overlap:** 72% (shared: writing, content, marketing, seo, editing; unique to content-writer: blog, longform; unique to copywriter: ads, conversion)
- **Recommendation:** Keep content-writer (reason: more total uses — 8 vs 3)
- **Action required:** Merge tags and remove copywriter
## Archive Candidates
### seo-analyst
- **Last activity:** 2025-11-28 (120 days ago)
- **Total uses:** 1
- **Reason:** Unused for >90 days, low total usage
- **Action required:** Archive to library/archive/
## Quality Promotions
### product-manager
- **Current tier:** untested
- **Recommended tier:** tested
- **Evidence:** 7 uses over 45 days, no modifications
### frontend-developer
- **Current tier:** untested
- **Recommended tier:** tested
- **Evidence:** 5 uses over 30 days, no modifications
### qa-engineer
- **Current tier:** tested
- **Recommended tier:** iterated
- **Evidence:** 12 uses over 60 days, unmodified since creation
## Orphaned References
### Template: marketing-campaign
- **Missing agent:** brand-strategist
- **Options:** Create brand-strategist agent / Remove from template / Replace with content-writer
## Evidence Currency Issues
### backend-engineer
- **Issue type:** Unsupported number
- **Detail:** Agent definition claims "pair review catches three times as many defects" with no citation. No source in docs/research/source-index.md states this figure.
- **Recommended fix:** Remove the claim or replace with a sourced figure; if it describes a Forge convention, label it as such instead.
### qa-engineer
- **Issue type:** Reasoning-echo instruction
- **Detail:** SOP step 4 instructs the agent to "explain your step-by-step reasoning before giving the verdict."
- **Recommended fix:** Remove the reasoning-echo instruction; rely on adaptive thinking and require only the verdict plus supporting evidence.
Example 2: Clean Library
Scenario: Library contains 6 agents, 1 skill, and 1 template. All items are actively used, no duplicates, no orphans.
Review report output:
# Library Review Report
**Date:** 2026-03-28T12:00:00Z
**Total items:** 8 (6 agents, 1 skill, 1 template)
## Summary Statistics
| Domain | Agents | Skills | Templates | Total |
|--------|--------|--------|-----------|-------|
| software | 4 | 1 | 1 | 6 |
| marketing | 2 | 0 | 0 | 2 |
### Quality Distribution
| Tier | Count | Percentage |
|------|-------|------------|
| Curated | 1 | 17% |
| Iterated | 2 | 33% |
| Tested | 2 | 33% |
| Untested | 1 | 17% |
## No Issues
Library is clean. No merge candidates, stale items, promotions, orphans, or evidence-currency issues detected.
All items have been used within the last 90 days. Quality tiers are up to date. All template references resolve to existing agents. All citations trace to docs/research/source-index.md and no item shows reasoning-echo instructions or rule-stuffing.
Environment Branching
Claude Code Environment
- Operates on the filesystem directly. Reads and writes
library/index.json, library/usage-log.jsonl, and item files under library/.
- Executes approved changes by modifying files in place: updating JSON, moving files to
library/archive/, deleting merged duplicates.
- Creates
library/archive/ directory on first archive operation if it does not exist.
Cowork / Claude.ai Environment
- Reads from the working folder. Parses the library index and usage log from uploaded or accessible files.
- Cannot directly modify files. Instead, produces a report with specific recommendations.
- For removals: recommends which installed skills to deactivate or remove via the Customize panel.
- For promotions: provides the updated index.json content for the user to apply manually.
- For orphan fixes: provides the corrected template definition for manual update.
Questions This Skill Answers
This skill activates when the user asks any of the following (or variations):
- "Review the library"
- "What's in my library?"
- "Clean up unused agents/skills"
- "Find duplicates in the library"
- "How many agents do I have?"
- "Which agents haven't been used?"
- "Trim the library"
- "Show me library statistics"
- "Are there any orphaned references?"
- "Promote tested agents"
- "What quality tier are my agents?"
- "Is there anything stale in the library?"
- "Is anything in the library citing outdated research?"
References
./references/review-criteria.md — Scoring rubrics, threshold definitions, and merge strategy details./schemas/index-schema.json — Library index format specification./schemas/usage-log-schema.json — Usage log entry format specificationdocs/research/source-index.md — Bibliography used by the evidence-currency check to verify citations and quantitative claims
