Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx agentmods add skills/trtmn/agent-plugins/self-improvementnpx skills add trtmn/agent-plugins --skill self-improvementgit clone --depth 1 https://github.com/trtmn/agent-pluginsWhat it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5 | $0.00132 | $0.01944 |
| Opus 5 | $0.00066 | $0.00972 |
| Sonnet 5 | $0.00026 | $0.00389 |
| Haiku 4.5 | $0.00013 | $0.00194 |
Grade A, and why
self-improvement scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 129 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Self-Improvement
The review + auto-promote half of the learning loop. Capture is handled separately by the learnings skill, which writes pending entries to ~/.learnings/ continuously. This skill is the deliberate-but-autonomous half: it investigates each pending entry, promotes the ones that clear a conservative bar into CLAUDE.md, and records every decision in CHANGELOG.md so the active log stays clean and every promotion is reversible.
It closes the loop so Claude gets better as you keep using it — no manual step required.
How it runs
One pipeline, one behavior, two triggers. The pipeline never branches on who called it — it always runs non-interactively and auto-promotes. That single invocation model is what makes it safe to run headless (an approval prompt in an unattended process would deadlock).
| Trigger | How |
|---|---|
| Autonomous (primary) | A gated SessionEnd hook (~/.claude/self-improvement/review-trigger.sh) checks the user-level pending count; if it's ≥ REVIEW_THRESHOLD and the cooldown has elapsed and no review holds the lock, it spawns a detached, headless claude -p review that runs the pipeline in its own process — zero cost to your live session. |
| Manual | /self-improvement runs the same pipeline in the foreground so you can watch promotions happen and intervene. |
Undo any promotion with /self-improvement:revert <PROMO-hex>.
Relationship to learnings
learnings |
self-improvement |
|
|---|---|---|
| Who invokes | Main Claude, autonomously, on every trigger | SessionEnd hook (headless) or the user (/self-improvement) |
| When | Continuously | After a session ends (if enough piled up), or on demand |
| Does | Appends pending entries to ~/.learnings/ |
Investigates, auto-promotes qualifiers, logs to CHANGELOG |
| Behavior | Pure capture | Non-interactive auto-promote + revertible trail |
The pipeline (run by the self-improvement agent)
- Sweep (if given a session transcript path) for learnings passive capture missed; write them as
Status: pendingusing thelearningsentry formats. - Read all
Status: pendingentries from~/.learnings/{LEARNINGS,ERRORS,FEATURE_REQUESTS}.md. (Manual runs also read the project.learnings/mirror; autonomous runs do not — see Scope.) - Investigate each candidate with a
learning-investigatorsubagent — one per entry, dispatched as concurrent foreground calls (parallel but blocking; neverrun_in_background, which would let the orchestrator yield before verdicts return). Collect every verdict before acting. - Act: auto-promote verdicts that clear the bar (append to target
CLAUDE.md,[PROMO-<hex>]to CHANGELOG, remove from pending);[SKIP-<hex>]clear rejects; leave uncertain/project-scoped entries pending. EnforceMAX_PROMOTIONS_PER_RUN. - Notify via a single Pushover summary.
- Report the same summary to stdout (lands in
.review.logfor headless runs).
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 2d ago First seen · 129 lines · 132 tokens per session scan A 58b0ad3b008c
self-improvement is a skill published in the GitHub repository trtmn/agent-plugins (2 stars, last pushed 5d ago), licensed Unlicense. It adds 132 tokens to every session and 1,944 once invoked, about $0.0007 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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