Turn incidents intoverified test suites

Ratchet orchestrates an unprivileged Docker sandbox, synthesizes tests via LLM, and proves your fix works.

The end-to-end verification engine.

Don't just write tests, mathematically prove they work against the exact commit boundary using our sandboxed gate strip.

Ratchet parses your repo using `tree-sitter` to map Git diff hunks directly to syntax blocks, feeding the LLM only what matters.

A native unprivileged Docker orchestration with strict resource limits, dropped capabilities, and zero network access.

If a test fails a gate, Ratchet injects the structured traceback back into Claude to repair the test recursively up to 4 times.

Connect your GitHub repository, drop in a PR, and watch the pipeline build a test in seconds.

Ratchet Verification

Blindly shipping code and praying for no regressions

Context-window bloat crashes your LLM agents

No mathematical proof that generated tests actually work

Unsafe execution environments risk infrastructure leaks

Endless back-and-forth repairing brittle, flaky tests

Run code in a completely isolated, unprivileged sandbox

AST navigation feeds the LLM only the relevant syntax

Tests are proven against both Parent and Fix commits

Recursive repair loops automatically fix failing gates

100% verified regression tests ready for CI/CD