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Get Started Free →Captures learnings, errors, and corrections to enable continuous improvement. Use when: (1) A command or operation fails unexpectedly, (2) User corrects Claude ('No, that's wrong...', 'Actually...'), (3) User requests a capability that doesn't exist, (4) An external API or tool fails, (5) Claude realizes its knowledge is outdated or incorrect, (6) A better approach is discovered for a recurring task. Also review learnings before major tasks.
.claude/skills/jdrhyne-self-improving-agent/SKILL.md| Test case | Without → With | Effect | Δ tokens | Δ turns |
|---|---|---|---|---|
| case-03 | ✗→✓ | ▲ Improved | -21% | 0% |
| case-04 | ✗→✓ | ▲ Improved | 16% | 0% |
| case-17 | ✗→✓ | ▲ Improved | 41% | 0% |
| case-18 | ✗→✓ | ▲ Improved | 13% | 0% |
| case-21 | ✓→✗ | ▼ Worse | -17% | 0% |
Capture non-obvious lessons, failures, and feature requests in a small local knowledge base so the same mistakes are less likely to repeat.
Keep entries in a local .learnings/ directory:
.learnings/LEARNINGS.md.learnings/ERRORS.md.learnings/FEATURE_REQUESTS.mdCreate the directory on first use if it does not exist.
Use for corrections, conventions, and better practices.
markdown## [LRN-YYYYMMDD-XXX] category **Logged**: ISO-8601 timestamp **Priority**: low | medium | high | critical **Status**: pending **Area**: frontend | backend | infra | tests | docs | config ### Summary One-line learning ### Details What happened and what is now known to be correct ### Suggested Action Specific follow-up or rule ### Metadata - Source: conversation | error | user_feedback - Related Files: path/to/file.ext - Tags: tag1, tag2 - See Also: LRN-20250110-001
Use for reproducible failures or flaky workflows.
markdown## [ERR-YYYYMMDD-XXX] tool_or_workflow **Logged**: ISO-8601 timestamp **Priority**: high **Status**: pending **Area**: frontend | backend | infra | tests | docs | config ### Summary Short failure description ### Error Exact error text or symptoms ### Context - Operation attempted - Inputs or environment details ### Suggested Fix Likely next step
Use for missing capabilities the user wants tracked.
markdown## [FEAT-YYYYMMDD-XXX] capability_name **Logged**: ISO-8601 timestamp **Priority**: medium **Status**: pending **Area**: frontend | backend | infra | tests | docs | config ### Requested Capability What the user wanted ### User Context Why it matters ### Suggested Implementation Likely extension point or implementation direction
See Also when patterns repeat..learnings/ before major work in a familiar problem area.If a learning becomes broadly reusable:
Recurring patterns are good candidates for extraction into a dedicated skill when the solution is verified, portable, and no longer project-specific.
.learnings/.| Case | Status | Duration (ms) | Turns | Tokens | Tool calls | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Without | With | Δ | Without | With | Δ | Without | With | Δ | Without | With | Δ | ||
case-14 | fail→fail | 7,395 | 4,606 | -38% | 1 | 1 | 0% | 1,079 | 1,119 | +4% | 0 | 0 | — |
case-01 | fail→fail | 9,850 | 5,375 | -45% | 1 | 1 | 0% | 1,660 | 1,663 | +0% | 0 | 0 | — |
case-02 | fail→fail | 11,919 | 11,961 | +0% | 1 | 1 | 0% | 1,512 | 1,647 | +9% | 0 | 0 | — |
case-03 | fail→pass | 15,584 | 10,849 | -30% | 1 | 1 | 0% | 1,739 | 1,381 | -21% | 0 | 0 | — |
case-04 | fail→pass | 11,396 | 10,478 | -8% | 1 | 1 | 0% | 1,751 | 2,028 | +16% | 0 | 0 | — |
case-05 | fail→fail | 11,692 | 5,377 | -54% | 1 | 1 | 0% | 1,796 | 1,053 | -41% | 0 | 0 | — |
case-06 | fail→fail | 9,907 | 5,612 | -43% | 1 | 1 | 0% | 1,424 | 1,141 | -20% | 0 | 0 | — |
case-07 | fail→fail | 6,330 | 8,441 | +33% | 1 | 1 | 0% | 887 | 1,383 | +56% | 0 | 0 | — |
case-08 | pass→pass | 13,782 | 6,180 | -55% | 1 | 1 | 0% | 2,040 | 1,664 | -18% | 0 | 0 | — |
case-09 | fail→fail | 7,271 | 7,122 | -2% | 1 | 1 | 0% | 472 | 1,230 | +161% | 0 | 0 | — |
case-10 | pass→pass | 11,866 | 9,732 | -18% | 1 | 1 | 0% | 1,706 | 2,466 | +45% | 0 | 0 | — |
case-11 | pass→pass | 13,747 | 19,343 | +41% | 1 | 1 | 0% | 2,230 | 4,150 | +86% | 0 | 0 | — |
case-12 | pass→pass | 4,481 | 8,330 | +86% | 1 | 1 | 0% | 747 | 1,622 | +117% | 0 | 0 | — |
case-13 | pass→pass | 4,405 | 2,409 | -45% | 1 | 1 | 0% | 607 | 1,095 | +80% | 0 | 0 | — |
case-15 | pass→pass | 12,433 | 17,344 | +39% | 1 | 1 | 0% | 1,776 | 3,141 | +77% | 0 | 0 | — |
case-16 | fail→fail | 8,110 | 6,215 | -23% | 1 | 1 | 0% | 898 | 1,125 | +25% | 0 | 0 | — |
case-17 | fail→pass | 9,532 | 7,620 | -20% | 1 | 1 | 0% | 1,432 | 2,016 | +41% | 0 | 0 | — |
case-18 | fail→pass | 8,771 | 9,316 | +6% | 1 | 1 | 0% | 1,577 | 1,783 | +13% | 0 | 0 | — |
case-19 | fail→fail | 14,444 | 4,514 | -69% | 1 | 1 | 0% | 2,117 | 1,355 | -36% | 0 | 0 | — |
case-20 | fail→fail | 3,665 | 5,031 | +37% | 1 | 1 | 0% | 522 | 980 | +88% | 0 | 0 | — |
case-21 | pass→fail | 7,216 | 6,050 | -16% | 1 | 1 | 0% | 1,175 | 975 | -17% | 0 | 0 | — |
case-22 | pass→pass | 8,184 | 9,554 | +17% | 1 | 1 | 0% | 1,414 | 1,923 | +36% | 0 | 0 | — |
DecimalAI ran this skill against gemini-3.6-flash twice over the same eval suite — once with the skill loaded and once without — and compared the two runs case by case. 22 cases were attempted, and 13 counted toward the lift figure. The other 9 produced results that are not comparable between the two arms, so they are excluded from the headline rather than averaged into it. The headline lift of +14 percentage points is the difference between those two pass rates over the 13 comparable cases. 2 cases got worse with the skill loaded, and they are included in that figure.
Without the skill loaded, the model failed this case. With it loaded, the same prompt on the same model passed. This is one improved case from the latest verified run; every case, including any that regressed, is in the table above.
Other measured skills in the registry, with their headline benchmark lift.