CodeRabbit
Free tierAI-powered code reviews that cut review time & bugs in half, instantly
Free tier available·Technical·API available
Key strengths
Deep codebase-aware AI reviews with codegraph intelligence1-click fix commits and 'Fix with AI' for instant remediation40+ linters and security scanners with noise filteringCustomizable via YAML — coding guidelines, workflow, and review rulesWorks at PR stage, in the IDE, and via CLI
Free tier + paid plans
US
Founded 2023
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Technical Setup & Configuration
Installation
CodeRabbit installs as a GitHub App or GitLab integration — no infrastructure to manage. It also ships as a CLI and IDE extension for pre-merge review workflows.
YAML Configuration
Drop a .coderabbit.yaml at the root of your repository to control behavior:
reviews:
profile: "assertive"
path_instructions:
- path: "src/api/**"
instructions: "Ensure all endpoints validate input and return typed responses."
auto_review:
enabled: true
drafts: false
language: "en-US"
Key Features for Developers
- Codegraph — Builds a dependency graph of your codebase to understand cross-file impact of changes.
- AST-based instructions — Target review rules at specific code constructs, not just file paths.
- MCP server integration — Pull in external context from Model Context Protocol servers.
- Linked Issues — Automatically fetches Jira or Linear issue details to validate PR intent vs. spec.
- 40+ linters/scanners — Static analysis, security scanning, and style enforcement with AI-powered noise filtering.
- Unit test generation — Identifies gaps in test coverage and generates missing unit tests on demand.
- Docstring generation — Creates file- and function-level docstrings in one click.
- Coding agent guidelines — Pass instructions from your AI coding tool (e.g., Cursor, Copilot) to CodeRabbit in a single click.