harness-evolver
Raphael Valdetaro v6.4.2
Autonomous LLM agent optimization using LangSmith. Spawns 5 parallel proposers in git worktrees, evaluates candidates via LangSmith experiments, and merges winners automatically. Includes evaluator...
From the developer
License
MIT
Works with
Claude Code
Description
From the marketplace listing
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.
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Keywords
Files & skills
harness-evolver · catalog manifest
Saved declaration
{}
harness-evolver · catalog manifest
Saved declaration
{
"name": "harness-evolver",
"source": {
"sha": "87fa7612358acccb01d34abf72426a7e47329642",
"url": "https://github.com/raphaelchristi/harness-evolver.git",
"source": "url"
},
"homepage": "https://github.com/raphaelchristi/harness-evolver",
"description": "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."
}
harness-evolver · catalog manifest
Saved declaration
{
"name": "harness-evolver",
"author": {
"name": "Raphael Valdetaro"
},
"license": "MIT",
"version": "6.4.2",
"homepage": "https://github.com/raphaelchristi/harness-evolver",
"keywords": [
"langsmith",
"optimization",
"evolution",
"llm",
"agent",
"evaluator",
"langsmith-cli"
],
"repository": "https://github.com/raphaelchristi/harness-evolver",
"description": "LangSmith-native autonomous agent optimization — evolves LLM agent code using multi-agent proposers, LangSmith experiments, and git worktrees"
}
plugin.json observed Nov 6, 2026 · 10:44 UTC. Manifest source ↗
Catalog declarations and available plugin.json metadata are saved. Referenced skills and executable source files are not downloaded or tested. Missing components in a manifest do not prove that the plugin has none.
Installation instructions
Community
/plugin marketplace add anthropics/claude-plugins-community
/plugin install harness-evolver@claude-communityTechnical details
- Sources
- Community
- First seen
- Oct 3, 2026 · 22:13 UTC
- Last seen
- Nov 7, 2026 · 06:00 UTC
- Latest observed change
- Oct 3, 2026 · 22:13 UTC
- Collection status
- Listed
- Reported installs
- Not provided
Installation counts are source-reported, not independently verified active users. Observation dates are not release dates.
Download plugin data (JSON)Plugin history: freshly prepared. Prepared . Refreshed when catalog data changes or after 6 hours. Your account and Follow status are live.