self-improving-agent-builder
Encodes a continuous improvement loop for goal-seeking agents: EVAL, ANALYZE, RESEARCH (hypothesis + evidence + counter-arguments), IMPROVE, RE-EVAL, DECIDE. Auto-commits improvements (+2% net, no regression >5%) and reverts failures. Works with all 4 SDK implementations. Auto-activates on "improve agent", "self-improving loop", "agent eval loop", "benchmark agents", "run improvement cycle".
How do I install this agent skill?
npx skills add https://github.com/rysweet/amplihack --skill self-improving-agent-builderIs this agent skill safe to install?
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This skill implements an autonomous self-improvement loop for agents, including phases for evaluation, research, and code modification. While its primary purpose is agent building, it possesses the capability to modify and execute its own logic based on agent outputs. This introduces an indirect prompt injection surface where evaluation data could influence future code execution. All external repository references are vendor-controlled.
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What does this agent skill do?
Self-Improving Agent Builder
Purpose
Run a closed-loop improvement cycle on any goal-seeking agent implementation:
EVAL -> ANALYZE -> RESEARCH -> IMPROVE -> RE-EVAL -> DECIDE -> (repeat)
Each iteration measures L1-L12 progressive test scores, identifies failures
with error_analyzer.py, runs a research step with hypothesis/evidence/
counter-arguments, applies targeted fixes, and gates promotion through
regression checks.
When I Activate
- "improve agent" or "self-improving loop"
- "agent eval loop" or "run improvement cycle"
- "benchmark agents" or "compare SDK implementations"
- "iterate on agent scores" or "fix agent regressions"
Quick Start
User: "Run the self-improving loop on the mini-framework agent for 3 iterations"
Skill: Executes 3 iterations of EVAL->ANALYZE->RESEARCH->IMPROVE->RE-EVAL->DECIDE
Reports per-iteration scores, net improvement, and commits/reverts.
Runner Script
The self-improvement loop is implemented as a Python CLI:
# Basic usage
python -m amplihack.eval.self_improve.runner --sdk mini --iterations 3
# Full options
python -m amplihack.eval.self_improve.runner \
--sdk mini \
--iterations 5 \
--improvement-threshold 2.0 \
--regression-tolerance 5.0 \
--levels L1 L2 L3 L4 L5 L6 \
--output-dir ./eval_results/self_improve \
--dry-run # evaluate only, don't apply changes
Source: src/amplihack/eval/self_improve/runner.py
The Loop (6 Phases per Iteration)
Phase 1: EVAL
Run the L1-L12 progressive test suite on the current agent implementation.
Execution:
python -m amplihack.eval.progressive_test_suite \
--agent-name <agent_name> \
--output-dir <output_dir>/iteration_N/eval \
--levels L1 L2 L3 L4 L5 L6
Output: Per-level scores and overall baseline.
Phase 2: ANALYZE
Classify failures using error_analyzer.py. Maps each failed question to a
failure taxonomy (retrieval_insufficient, temporal_ordering_wrong, etc.) and
the specific code component responsible.
from amplihack.eval.self_improve import analyze_eval_results
analyses = analyze_eval_results(level_results, score_threshold=0.6)
# Each ErrorAnalysis maps to:
# failure_mode -> affected_component -> prompt_template
Phase 3: RESEARCH (New)
The critical thinking step that prevents blind changes. For each proposed improvement:
- State hypothesis: What specific change will fix the failure?
- Gather evidence: From eval results, failure patterns, baseline scores
- Consider counter-arguments: What could go wrong? Risk of regression?
- Make decision: Apply, skip, or defer with full reasoning
Decisions are logged in research_decisions.json for auditability.
Decision criteria:
- Apply: Clear failure pattern + prompt template available + low score
- Skip: Score above 50% (likely stochastic variation)
- Defer: Ambiguous evidence, needs more data
Phase 4: IMPROVE
Apply the improvements approved by the research step. Priority order:
- Prompt template improvements (safest, highest impact)
- Retrieval strategy adjustments
- Code logic fixes (most risky, needs careful review)
Phase 5: RE-EVAL
Re-run the same eval suite after applying fixes to measure impact.
Phase 6: DECIDE
Promotion gate:
- Net improvement >= +2% overall score: COMMIT the changes
- Any single level regression > 5%: REVERT all changes
- Otherwise: COMMIT with marginal improvement note
Configuration
| Parameter | Default | Description |
|---|---|---|
sdk_type | mini | Which SDK: mini/claude/copilot/microsoft |
max_iterations | 5 | Maximum improvement iterations |
improvement_threshold | 2.0 | Minimum % improvement to commit |
regression_tolerance | 5.0 | Maximum % regression on any level |
levels | L1-L6 | Which levels to evaluate |
output_dir | ./eval_results/self_improve | Results directory |
dry_run | false | Evaluate only, don't apply changes |
Programmatic Usage
from amplihack.eval.self_improve import run_self_improvement, RunnerConfig
config = RunnerConfig(
sdk_type="mini",
max_iterations=3,
improvement_threshold=2.0,
regression_tolerance=5.0,
levels=["L1", "L2", "L3", "L4", "L5", "L6"],
output_dir="./eval_results/self_improve",
dry_run=False,
)
result = run_self_improvement(config)
print(f"Total improvement: {result.total_improvement:+.1f}%")
print(f"Final scores: {result.final_scores}")
4-Way Benchmark Mode
Compare all SDK implementations side by side:
User: "Run a 4-way benchmark comparing all SDK implementations"
Skill: Runs eval suite on mini, claude, copilot, microsoft
Generates comparison table with scores, LOC, and coverage.
Integration Points
src/amplihack/eval/self_improve/runner.py: Self-improvement loop runnersrc/amplihack/eval/self_improve/error_analyzer.py: Failure classificationsrc/amplihack/eval/progressive_test_suite.py: L1-L12 eval runnersrc/amplihack/agents/goal_seeking/sdk_adapters/: All 4 SDK implementationssrc/amplihack/eval/metacognition_grader.py: Advanced eval dimensionssrc/amplihack/eval/teaching_session.py: L7 teaching quality eval
How can the creator link this skill?
Add the canonical catalog link to the repository README so users can inspect current installs and available audits. The publishing guide covers the complete discovery path.
<a href="https://skillzs.dev/skills/rysweet/amplihack/self-improving-agent-builder">View self-improving-agent-builder on skillZs</a>