harness-forge: Turn Claude Code into its own Meta-Harness — a skill that evolves the scaffolding around a fixed model

by 001TMF · Claude Skill · ★ 76

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How to install harness-forge

/plugin marketplace add 001TMF/harness-forge
/plugin install harness-forge@tmf-skills

Taken from the project's README on GitHub.

Security audit verdict: SAFE · quality 68/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours.

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

agent-skillsagentsclaude-codeclaude-skillllmmeta-harnesspareto-optimizationprompt-optimization

Quick Facts

Stars76
Forks7
LanguagePython
CategoryClaude Skill
LicenseMIT
Quality Score68/100
Last Updated2026-06-14
Created2026-06-14
Platformsclaude-code, python
Est. Tokens~12k

About harness-forge

Turn Claude Code into its own Meta-Harness — evolve the scaffolding around a fixed model, natively. -555) Harness Forge is a Claude Code skill that runs an end-to-end harness-optimization loop — propose → score → keep the Pareto-best → repeat — to improve the code around a fixed model: its memory, retrieval, context construction, summarization, prompt templates, and tool-selection logic.

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

View on GitHub → Browse Claude Skill tools