Chisel

Chisel is a Claude Code plugin for autonomous PR refinement driven by automated review.

Instead of treating local checks as the final evaluator, Chisel assumes the strongest critic is an external PR review system (Greptile). It runs parallel agents that self-correct against review feedback without needing you to babysit each PR.

How it works

1. Make a change
2. Open or update a PR
3. Trigger automated review
4. Fix findings and CI failures
5. Repeat until all gates pass or a safety stop fires

Success gate

All three must be true:

• Greptile confidence score 5/5
• Zero unresolved Greptile-generated comments
• All GitHub required checks passing

Safety stops

• Max iterations reached
• No progress across consecutive iterations
• Review pipeline failure
• CI failures not auto-fixable after 2 consecutive attempts

Commands

• /chisel:run-loop [--pr N] [--max-iterations N] -- start the loop
• /chisel:status [--pr N] -- check active run state
• /chisel:cancel-loop [--force] -- stop an active loop
• /chisel:help -- show usage info

Install

From the official marketplace

/plugin install chisel

From GitHub

/plugin marketplace add crisog/chisel
/plugin install chisel@chisel-dev

Requirements

• git
• gh CLI authenticated (gh auth status)
• GREPTILE_API_KEY environment variable set (get one at app.greptile.com under Settings > Organization > API Keys)
• node available (for hook runtime)

The Greptile MCP server is bundled with the plugin and configured automatically on install.

State files

• Loop state: .claude/chisel-loop.local.md (at git root)
• Run history: .claude/chisel/runs/<pr>.json

Tests

./tests/run-tests.sh