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agent-harness
Install
- Add the marketplace (once):
/plugin marketplace add https://fidget.io/marketplace.json - Install this plugin:
/plugin install agent-harness@fidget
Run these inside Claude Code.
How to use it
- Install it with the commands above — inside Claude Code.
- Then just work. The skill activates on its own when your task matches what it covers; there's no command to remember.
- It pulls in only the part it needs, section by section, so it stays light on your context window.
Want to see exactly what it bundles? Browse the source on GitHub →
About
Cited reference for building agent harnesses: the agentic loop, tool design, context/memory, permissions/sandboxing, subagents, resilience, observability, and evals.