RepoPilot

RepoPilot

Local, deterministic review for Git changes.

RepoPilot helps developers and teams inspect a change before merge. It reports structural evidence about security boundaries, behavior, local imports and exports, and the files affected through the dependency graph. The same review can run from a terminal, in CI, or through an agent integration.

The analysis runs on the machine or CI runner that invokes it. It does not send source to a hosted service or call an embedded language model. Findings point to code and explain what to check; reviewers still decide whether a change is safe for their application.

Example: a change that weakens its own tests

This change drops a range check from applyDiscount. The same change skips the test that would now fail, removes an assertion from another test, and lets the CI test step fail without failing the job. Every check that still runs passes. repopilot review . lists them right after its decision:

Decision: REVIEW (Change Proof: REVIEW)
...
Checks this change weakened (details under Review signals):
  ⚑ check gate relaxed — .github/workflows/ci.yml:10
  ⚑ assertions removed — src/pricing.test.ts:5
  ⚑ test skipped — src/pricing.test.ts:9

Further down, each signal explains itself:

    ⚑ check gate relaxed — .github/workflows/ci.yml:10  check step `npm test` in job `test` now has `continue-on-error: true`
    ⚑ assertions removed — src/pricing.test.ts:5  "applyDiscount > takes a percentage off the total": assertions 2 → 1
    ⚑ test skipped — src/pricing.test.ts:9  `it.skip` added on "rejects a discount above 100%"; its result no longer fails the run

These are excerpts of one run (recording). Replay it with scripts/demo-weakened-tests.sh <empty-dir>, then run repopilot review <empty-dir>.

Install and review

cargo install repopilot
# or
npm install -g repopilot

repopilot review . --base origin/main

For uncommitted work, run repopilot review .. The first screen gives one PASS, REVIEW, BLOCK, or NOT ASSESSED decision, its reasons, coverage limits, and a next action.

A review can surface:

• changes to authentication, request trust, deployment, dependencies, or secret configuration;
• added or removed behavior such as network calls, subprocesses, filesystem writes, SQL, or error handling;
• changed input-to-sink paths, algorithmic structure, or local import/export contracts;
• tests the change stopped running or weakened: committed focus markers such as it.only, newly skipped tests (it.skip, @pytest.mark.skip, t.Skip, #[ignore]), removed or substituted test cases, tests that lost assertions, new lint, type, or coverage suppressions, and relaxed CI or tool gates (continue-on-error, || true, lowered coverage thresholds, strict mode off), so a green run cannot hide them;
• direct dependents and the wider impact of changed files.

Signals are advisory evidence. For example, a taint-lite signal shows that a recognized input can reach a recognized sink in the changed source. Confirm the impact in the context of the application and its configured checks.

Example: review an image-processing change

The Wagtail example removes an authorization check and passes request data to a subprocess in a one-file change. RepoPilot reports both the boundary change and the input-to-process flow.

Replay the example on the pinned test repository:

python3 scripts/zoo.py clone --only wagtail
scripts/demo-agent-edit.sh .zoo/wagtail
repopilot review .zoo/wagtail

A reported flow is a path to investigate. RepoPilot does not prove that it is exploitable or that the application is safe.

Use in a team

Gate a branch review on high-confidence signals:

repopilot review . --base origin/main --fail-on-review definitely

A review is VERIFIED only when checks configured for the repository are explicitly selected with --verify and pass on the reviewed revision. Generate suggestions for a first setup with repopilot init --suggestions-output repopilot-suggestions.toml; the file is separate from active configuration. See configuration.

For a broader repository view, run repopilot scan .. Use repopilot baseline create . to adopt existing findings before gating new work.

Agent and CI integrations

The same review can check work from a human or a coding agent. Record a starting point and review the changes made since it:

repopilot snapshot
# Work happens here.
repopilot review --since-snapshot

When the working tree is already dirty, the marker also records a baseline commit of those uncommitted files, so the later review covers only what changed after the snapshot. It shows what changed, not who changed it. See common workflows.

In Claude Code, the RepoPilot plugin runs that loop for every session and stops Claude from finishing while a test it skipped, focused, removed, or weakened is unexplained:

/plugin marketplace add MykytaStel/repopilot
/plugin install repopilot@repopilot

Codex installs the same plugin (codex plugin marketplace add MykytaStel/repopilot, then codex plugin add repopilot@repopilot). Gemini CLI installs it as an extension (gemini extensions install https://github.com/MykytaStel/repopilot), and Cursor runs it through project hooks. For GitHub Copilot's coding agent and other agents, RepoPilot provides setup steps, an MCP entry, and an AGENTS.md snippet. See Guard your agent runs.

RepoPilot also provides a local stdio MCP server and a GitHub Action. The MCP server gives an agent access to the local scan and review tools. The Action runs RepoPilot on the Actions runner and can publish SARIF or a pull request summary. See Guard your agent runs, MCP server, and GitHub integration. MCP Registry name: mcp-name: io.github.MykytaStel/repopilot.

More capabilities

• repopilot ai context . creates a local handoff with repository facts, findings, and a prioritized plan. It makes no model calls.
• repopilot init creates configuration or integration files for review.
• Reports are available as console, Markdown, JSON, HTML, and SARIF.

Documentation

• Install · Common workflows · CLI reference
• Current architecture · Reports and schemas · Security model
• Language support · Rules reference · Roadmap
• Latest stable release notes · Release evidence · Maintainer documentation

Contributing and development setup: CONTRIBUTING.md.

License

Licensed under either of Apache License, Version 2.0 or MIT license at your option.