kevinslin/ag-learn

ag-learn

Use this skill to turn agent mistakes, repeated friction, or useful workflow discoveries into better skills.

Constants

• LEARN_ROOT: $HOME/.llm/skills/learn
• LEARN_ARCHIVE: $HOME/.llm/skills/learn/.archive
• SKILL_TOKEN: ag-learn

Core Workflow

1. Identify the learning source: current session, named session, merged PR, pasted evidence, or review window.
2. For default/current-session learning, read ./references/session-forensics.md and scan the active rollout JSONL before choosing the final learning focus.
   • Treat the user's immediate complaint as a seed, not the whole evidence boundary.
   • Include earlier same-session mistakes, interruptions, corrections, and explicit skill invocations when they are related or explain why the immediate complaint happened.
   • If the user names a narrower source such as a PR, pasted evidence, or review window, scan that source and any current-session turns that led to the request.
3. Inspect enough durable evidence to understand the friction.
   • Good evidence: transcript excerpts, rollout JSONL, PR comments, diffs, logs, generated artifacts, command output, saved learn notes.
   • If transcript forensics are needed, read ./references/session-forensics.md.
4. Rank candidate learnings by prominence before choosing what to save or apply.
   • Prefer issues that recur across the session, required user correction, caused rework, or crossed skill boundaries.
   • Do not choose only the most recent failure unless the requested source is explicitly narrow.
   • Collapse timebound incidents into the durable workflow gap behind them. For example, "one PR had stale mergeability" should become a reusable finalization rule only if the evidence shows a general GitHub-state handling gap.
   • De-prioritize one-off environmental flakes, temporary CI behavior, and already-fixed implementation details unless they reveal a reusable skill gap.
5. Decide whether the issue should change a skill.
   • Optimize an existing skill when the workflow already has a clear home.
   • Propose a new skill when repeated work has no clean home.
   • Use none when the lesson is too situational or not skill-shaped.
6. Read the target skill or shortcut source before judging the gap.
   • For skill changes, follow ../sc/SKILL.md and edit only the canonical source tree.
   • For trigger:<shortcut> cases, resolve the shortcut through ../dev.shortcuts/SKILL.md before classifying the mistake.
7. Produce 1-3 high-signal improvements. Do not pad with weak lessons.
   • When the user asks to scan an entire conversation or session, include a short candidate-friction ranking in the saved note coverage so the selected issues are auditable.
   • If a selected improvement is already covered by an existing skill, report it as already addressed and do not create a duplicate proposed change.
8. Save a learn note only when the user asks for persistence, the finding should be reused, or the run is review/code/formal mode.
   • Before creating or updating any saved note under LEARN_ROOT, read ./references/templates.md.
   • Saved notes must follow the durable note template from templates.md; the compact output format below is only for the user-facing summary.
   • Before reporting the saved path, verify the note contains ## Evidence Inspected, ## Coverage, ## Known Gaps, at least one ## [number] Improvement Opportunity, and ### Routing.

Modes

• Default/current session: use the Core Workflow, including the active rollout scan in ./references/session-forensics.md.
• review [time interval] [path]: read ./references/review-mode.md.
• code: read ./references/code-mode.md.
• Formal saved note or durable routing: read ./references/templates.md.
• Session lookup, parent/fork tracing, or ledger logging: read ./references/session-forensics.md and ./references/ledger.md; use ../ag-ledger/SKILL.md and ../dev.llm-session/SKILL.md as needed.

Output

The compact numbered format below is for chat summaries only. Do not use it as the saved-note file format.

For each improvement, keep the user-facing summary compact:

1. [short title]
Evidence: [durable evidence checked]
Skill gap: [what the skill should have made easier or prevented]
Target: [existing skill, proposed skill, or none]
Proposed change: [implementation-ready change, or n/a]
Promote: [yes|no]

When saving a note, write it under LEARN_ROOT with a filename containing the literal ag-learn token. Verify the saved path exists before reporting it.

Archive Learning

When the user archives a learning, move it to LEARN_ARCHIVE.