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harness-score

Assess a repository's readiness for an AI agent execution framework across five dimensions. Produce JSON or a table with readiness scores, estimated cost per run, and scaffold status, without changing repository files.

OriginalShow the original description

5-dimension harness readiness scorecard from `metaharness score {path}`. Returns harnessFit / compileConfidence / taskCoverage / toolSafety / memoryUsefulness + estCostPerRunUsd + scaffoldReady. Pure-read; subprocess invocation; degrades gracefully when MetaHarness is absent (ADR-150 architectural constraint).

See how to install

Good for

  • Assessing readiness before adopting an agent execution framework
  • Comparing readiness scores across five dimensions
  • Checking estimated run costs and scaffold readiness
  • Failing CI when the readiness score falls below a threshold

Files included (1)

  • SKILL.md2.4 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

Surfaces the upstream metaharness score CLI as a ruflo skill. Use when Claude Code needs to assess whether a repo is ready for harness adoption before recommending the user run npx ruflo init or harness-mint.

Algorithm

Implementation: scripts/score.mjs.

  1. Shell out to npx metaharness score <path> --json (single subprocess, 60s hard timeout).
  2. Parse the JSON shape: { harnessFit, compileConfidence, taskCoverage, toolSafety, memoryUsefulness, estCostPerRunUsd, recommendedMode, archetype, template, scaffoldReady, hardConstraints }.
  3. If --alert-on-fit-below N: exit 1 when harnessFit < N.
  4. Output JSON (default) or markdown table.

Phase-0 baseline (ruflo's own scorecard, measured 2026-06-16)

DimensionValue
harnessFit82/100
compileConfidence100
taskCoverage79
toolSafety100
memoryUsefulness40
estCostPerRunUsd$0.048
recommendedModeCLI + MCP
archetypetypescript-sdk-harness
templatevertical:coding
scaffoldReadytrue

Ruflo passes its own readiness check. memoryUsefulness: 40 is the weakest dimension — track this as a leading indicator for future memory work in the AgentDB layer.

CI integration

node plugins/ruflo-metaharness/scripts/score.mjs --alert-on-fit-below 70 --format json

Exit 1 fails the build. Pair with harness-genome for the full 7-section view.

Graceful degradation (ADR-150 architectural constraint rule #3)

When metaharness is not installed and npx can't fetch it (offline, no network, registry unreachable), the script emits:

{
  "degraded": true,
  "reason": "metaharness-not-available",
  "hint": "Install with `npm i -D metaharness@~0.4.1` (pinned range — this plugin never fetches @latest) or verify network access for the one-time cache install."
}

and exits 0. Ruflo continues to function — this is the architectural constraint in action.

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