ruvnet 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.
- Shell out to
npx metaharness score <path> --json(single subprocess, 60s hard timeout). - Parse the JSON shape:
{ harnessFit, compileConfidence, taskCoverage, toolSafety, memoryUsefulness, estCostPerRunUsd, recommendedMode, archetype, template, scaffoldReady, hardConstraints }. - If
--alert-on-fit-below N: exit 1 whenharnessFit < N. - Output JSON (default) or markdown table.
Phase-0 baseline (ruflo's own scorecard, measured 2026-06-16)
| Dimension | Value |
|---|---|
| harnessFit | 82/100 |
| compileConfidence | 100 |
| taskCoverage | 79 |
| toolSafety | 100 |
| memoryUsefulness | 40 |
| estCostPerRunUsd | $0.048 |
| recommendedMode | CLI + MCP |
| archetype | typescript-sdk-harness |
| template | vertical:coding |
| scaffoldReady | true |
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@~0.3.0` (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.
Source: ruvnet/ruflo → plugins/ruflo-metaharness/skills/harness-score/SKILL.md