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harness:certify

Use when the user wants to verify that the evolved agent's score is stable and reliable.

Skill by raphaelchristi

IndexedMIT★ 57
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Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.

npx agentmarket install skill/raphaelchristi-harness-certify

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About

Use when the user wants to verify that the evolved agent's score is stable and reliable. Runs evaluation multiple times and reports mean ± std.

Use cases: agent-building

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Permissions

What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

Tools
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Secrets
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Install scripts
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Network hosts it talks to 1

  • codeload.github.com · found in install command

Files it touches

  • ~/.claude/skills/harness-certify

What's inside

Skill name
harness:certify
Description
Use when the user wants to verify that the evolved agent's score is stable and reliable. Runs evaluation multiple times and reports mean ± std.
License
MIT
Instructions
59 lines in SKILL.md · view on GitHub

Agent Skills spec issues

  • name: only lowercase letters, digits and single hyphens allowed
  • name: "harness:certify" does not match folder "certify"
  • allowed-tools: must be a space-separated string

Files (1)

  • SKILL.md

SKILL.md (first lines)

# /harness:certify

Verify score stability by running evaluation multiple times and reporting statistical confidence.

## Resolve Tool Path

```bash
TOOLS="${EVOLVER_TOOLS:-$([ -d ".evolver/tools" ] && echo ".evolver/tools" || echo "$HOME/.evolver/tools")}"
EVOLVER_PY="${EVOLVER_PY:-$([ -f "$HOME/.evolver/venv/bin/python" ] && echo "$HOME/.evolver/venv/bin/python" || echo "python3")}"
```

## What To Do

Read `.evolver.json` to get the best experiment and dataset.

Run evaluation 3 times on the current code (not a worktree — the best code is already merged):

```bash
for i in 1 2 3; do
    $EVOLVER_PY $TOOLS/run_eval.py \
        --config .evolver.json \
        --worktree-path "." \
        --experiment-prefix "certify-run-$i"
done
```

After all 3 runs complete, read results and compute statistics:

```bash
$EVOLVER_PY $TOOLS/read_results.py --experiments "certify-run-1-{suffix},certify-run-2-{suffix},certify-run-3-{suffix}" --config .evolver.json --format summary
```

Calculate mean and standard deviation from the 3 combined_scores.

## Report

```
CERTIFICATION REPORT
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Runs:  3
Mean:  {mean:.3f}
Std:   {std:.3f}
Range: {min:.3f} — {max:.3f}

Verdict: {STABLE|UNSTABLE}
```

**STABLE** (std < 0.05): Score is reliable. The agent performs consistently.

**MARGINAL** (0.05 <= std < 0.10): Score varies moderately. Consider adding rubrics to reduce judge variance.

**UNSTABLE** (std >= 0.10): Score is unreliable. The LLM judge interprets criteria differently across runs. Add few-shot examples or tighter rubrics.

## After Certification

If STABLE: suggest `/harness:deploy` to finalize.
If UNSTABLE: suggest adding rubrics to dataset examples, or running `/harness:evolve` with `heavy` mode for more thorough evaluation.

From raphaelchristi/harness-evolver, MIT.

More from raphaelchristi/harness-evolver

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Stars
57
Forks
5
Open issues
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Last commit (this folder)
Apr 4, 2026 (7 months ago)
Last release
Apr 4, 2026 (7 months ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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harness:certify skill. Agent Mart. https://agentmart.dev/skills/raphaelchristi-harness-certify (last updated 2026-10-24)