ruvnet / harness-score

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`](../../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)

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.