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harness-evolver
raphaelchristi/harness-evolverPlugin
Autonomous LLM agent optimization using LangSmith. Spawns 5 parallel proposers in git worktrees, evaluates candidates via LangSmith experiments, and merges winners automatically. Includes evaluator agent (LLM-as-judge via langsmith-cli), critic, architect, and testgen agents. No external API keys needed beyond LangSmith.
Why this score
Popularity score: 49/100 from public GitHub signals only. It shows how widely used and maintained this is, not how well it works. Not included yet: the fake-star check. The security scan is shown separately and doesn't change the score. How we rank
Security
Scanned Nov 4, 2026 at commit 87fa7612358a, with Cisco's open-source skill-scanner.
What its code does:
- Runs shell commands Common for dev tools. Read the commands it runs.bin/install.js:13, docs/superpowers/plans/2026-04-02-claude-code-inspired-roadmap.md:186, docs/superpowers/plans/2026-04-02-hermes-improvements.md:337 and 17 more
- Runs code it builds while running (eval or exec) Harder to read ahead of time, since the code is assembled while it runs.playground/react-agent/agent.py:36
- Reads environment variables, where API keys usually livetools/run_eval.py:69
- Uses dependencies without a pinned version A later version of a dependency could change what runs.playground/requirements.txt:1 and 4 more
A scan lists patterns in the code. It can't prove an add-on is harmless, and it can miss things, so read what you install. How we scan
Alternatives
Other makers' add-ons that do the same job, next to this one.
| Name | Score | Stars | Context | Updated |
|---|---|---|---|---|
| This oneharness-evolver raphaelchristi/harness-evolver · Plugin | 49 | ★ 57 | not measured | 7mo ago |
| app-evolver daymade/claude-code-skills · Skill Both about evolver | 71 | ★ 1.5k | ≈22 always | 16d ago |
| paranoia-ai-system-evolver DY-2026/GameDesignOS · Skill Both about evolver and needed | 58 | ★ 429 | ≈101 always | 3mo ago |
| capability-evolver EvoMap/evolver · Skill Both about evolver | 87 | ★ 8.7k | ≈51 always | 19d ago |
| harness revfactory/harness · Skill Both about harness | 83 | ★ 9.2k | ≈80 always | 1mo ago |
| harness-context greatSumini/cc-system · Subagent Both about harness and needed | 59 | ★ 438 | ≈57 in chat | 5mo ago |