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 skills add ruvnet/metaharness --skill score-harnessgit clone --depth 1 https://github.com/ruvnet/metaharnessWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/ruvnet/metaharness/score-harness)<a href="https://agentmods.dev/skills/ruvnet/metaharness/score-harness"><img src="https://agentmods.dev/badge/skills/ruvnet/metaharness/score-harness/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/ruvnet/metaharness/score-harness"><img src="https://agentmods.dev/badge/skills/ruvnet/metaharness/score-harness.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What 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 5.1 | $0.00000 | $0.00740 |
| Opus 5.5 | $0.00000 | $0.00296 |
| Sonnet 5.5 | $0.00000 | $0.00148 |
| Haiku 4.5 | $0.00000 | $0.00074 |
Grade A, and why
score-harness 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 1mo 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 — 77 lines — stays where its author put it; the contents beside it link to each section on GitHub.
score-harness
Codex skill: 5-dimension harness scorecard with README-ready badges (iter 111 → iter 114).
What it does
Every generated harness gets a single 0-100 score and a 6-field badge block. The user roadmap target: A grade (>=85) without manual edits.
| Dimension | Weight | Reads |
|---|---|---|
| Repo understanding | 25% | .harness/manifest.json (surface + kernel_version + host) |
| Agent usefulness | 25% | src/agents/*.ts + .claude/skills/* + .claude/commands/* counts |
| MCP safety | 20% | .harness/mcp-policy.json (default-deny + audit + perm gates) |
| Test coverage | 15% | __tests__/ + npm test + .github/workflows/ |
| Publish readiness | 15% | witness.json + sbom.json + package.json#bin |
Grade + exit code:
| Grade | Range | Exit |
|---|---|---|
| A | 85-100 | 0 — the user's target |
| B | 70-84 | 0 |
| C | 50-69 | 1 (needs work) |
| F | 0-49 | 2 (blocked) |
Badge block (the 6-field shape)
{
"score": 87,
"mcpRisk": "Low",
"releaseReady": true,
"testsDetected": true,
"sbom": true,
"witnessSigned": true
}
mcpRisk is one of None / Low / Medium / High. Drop this block
into the generated harness README as visible badges — see ADR-030 for the
propagation discipline.
Usage from Codex
/score-harness path=./my-harness
/score-harness path=./my-harness bundle=true
Equivalent CLI
harness score ./my-harness # text + bars + dimension breakdown
harness score ./my-harness --json # 6-field badges JSON
harness score ./my-harness --bundle # ADR-031 schema-1 envelope
harness score ./my-harness --out badges.json
Related skills
validate-harness(iter 22) — release-readiness umbrella that the score subcommand inherits signals fromdiag-harness(iter 70) — kernel-version skew (one of the Repo-understanding signals)threat-model(iter 114) — focused MCP threat artifact
See also
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.
- 1mo ago First seen · 77 lines · 0 tokens per session scan A 4093fd09e4c4
score-harness is a skill published in the GitHub repository ruvnet/metaharness (713 stars, last pushed yesterday), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 740 tokens. 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 2026-08-30.
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