Chachamaru127 Claude Code Harness
- 3k repo stars
- Updated July 27, 2026
- Chachamaru127/claude-code-harness
chachamaru127-claude-code-harness is a Claude Code plugin that runs an autonomous Plan→Work→Review development cycle for higher-quality solo builds.
About
chachamaru127-claude-code-harness is a Claude Code plugin built around an autonomous Plan→Work→Review cycle for developers who want more structure than one-shot code generation without abandoning fast iteration. The upstream description positions it as a dedicated development harness that carries a feature from planning through implementation and review, which maps well to developers who otherwise lose traceability when context compacts or sessions fork. Contract and full-cycle keywords imply the agent should honor explicit stage boundaries—define what will be done, do the work, then review against that plan—rather than mixing all three in a single unstructured reply. Use it when you are building non-trivial features and want Claude Code to behave like a lightweight eng process. Pair it with your own test and security checks in Ship because the harness emphasizes cycle quality, not replacing dedicated security or performance tooling. Verify SKILL.md in the repo for gates, allowed tools, and how review findings loop back into the next plan iteration.
- Autonomous Plan→Work→Review full-cycle harness for Claude Code
- Targets higher-quality output for vibecoders and full-cycle solo development
- Contract-oriented workflow keywords suggest explicit handoffs between phases of the cycle
- Single-plugin productivity bundle from Chachamaru127/claude-code-harness
- Catalog categories label it productivity with plan-work-review workflow emphasis
Chachamaru127 Claude Code Harness by the numbers
- Data as of Jul 28, 2026 (Skillselion catalog sync)
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| repo stars | ★ 3k |
|---|---|
| Last updated | July 27, 2026 |
| Repository | Chachamaru127/claude-code-harness ↗ |
What it does
Run an autonomous Plan→Work→Review development harness in Claude Code so vibecoding sessions finish with plans, implementation, and review in one loop.
Who is it for?
Vibecoders and developers who want disciplined full-cycle Claude Code workflows without switching to a separate PM tool for every feature.
Skip if: Skip if you only need a one-off snippet, or teams that already enforce rigid CI, code review, and ticketing outside the agent.
What you get
You install a harness that forces plan, execution, and review passes in one repeatable loop so work stays aligned with an explicit contract.
- Structured plan artifact before implementation work
- Implementation pass executed under the harness contract
- Review pass that checks work against the stated plan
By the numbers
- Catalog lists 1 plugin in the bundle
- Repository: Chachamaru127/claude-code-harness
- Described workflow: autonomous Plan→Work→Review cycle
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A plan-work-review process harness for Claude Code, not a standalone testing MCP or deployment automation plugin.
FAQ
Who is Chachamaru127 Claude Code Harness for?
Claude Code developers, especially vibecoders, who want a structured Plan→Work→Review loop instead of unstructured multi-file edits.
When should I use Chachamaru127 Claude Code Harness?
Use it during Build when a feature or refactor is large enough to need a written plan, focused implementation, and a dedicated review pass before you merge or ship.
How do I add Chachamaru127 Claude Code Harness to my agent?
Register the plugin from the Chachamaru127/claude-code-harness repository using Claude Code’s plugin install flow, then start sessions that invoke the harness workflow described upstream.