metaharness
#54 of 203 by Downloads / week among npm packages
Scaffold, check and score a custom AI agent harness for Claude Code, Codex, Copilot, GitHub Actions and six more hosts: `npx metaharness new <name>`, then `harness doctor` and `harness score`.
About
Scaffold your own focused AI agent harness — like ruflo, uniquely yours.
Proven at the cost-Pareto frontier. Same "evolve the harness" thesis, measured: the Darwin harness resolves real SWE-bench Lite issues at 34.0% single-trajectory ($0.005/inst) and 39.7% Best-of-3 ($0.015/inst) — conformant, official harness. Live Cost–Performance leaderboard · @metaharness/darwin.
Published as metaharness (the metaharness and harness CLIs). Earlier versions were published as create-agent-harness.
You'll be prompted for template, host, description. Out comes a complete npm package ready to npm publish.
--host selects which host adapter ships with your harness:
If you've been using ruflo and want…
Excerpted from www.npmjs.com/package/metaharness
Latest metrics
| Downloads / week | 156.9k | 2026-11-10 |
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