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Most AI review tools scan the diff and call it done. Deep Review explores your entire codebase — reads files, runs your linter, checks tests, traces data flow. Takes 2-5 minutes — keep coding while it runs. Catches what diff-only tools literally cannot see.
Sends the diff + extracted context to Claude, Gemini, or GPT. Fast and cheap. Good for straightforward changes.
Claude Code agent explores your project directory. Opens files, searches for usages, runs your linter, checks tests.
Every step is visible in real-time via the activity log in your VS Code sidebar.
Understands what changed and why
Follows imports, reads type definitions, checks schemas
Finds every caller of changed functions across the codebase
Opens related test files, identifies coverage gaps
Executes project linter, reads and interprets the output
Produces findings based on the full picture, not just the diff
The activity log shows everything the agent does — which files it opens, what it searches for, what findings it builds. No black box.
Real examples from production codebases. These issues are invisible to tools that only scan the changed lines.
Agent opened 3 config files and found API keys in staging.env that weren't in .gitignore. Diff-only review saw none of them — the changed file was a controller.
A config file referenced a build hook that no longer existed after the rename. The agent traced the path through package.json, tsconfig, and the build script.
User input flowed through 3 files before reaching an unvalidated fetch() call. The agent traced the data flow from controller to service to HTTP client.
A function signature changed from required to optional parameter, but 4 callers in other files still assumed non-null. Agent found all 4.
External API response parsed without error handling. Agent checked the API docs and confirmed the response format could vary, making this a crash risk.
Every review scores your code across 6 categories on a 1-5 scale. Strengths highlighted, recommendations sorted by priority.
SOLID principles, separation of concerns, coupling/cohesion
Intention-revealing names, consistent style, single-purpose functions
Proper error propagation, input validation, meaningful error messages
Cyclomatic complexity, nesting depth, DRY without premature abstraction
Injectable dependencies, edge case coverage, mockable interfaces
Logging, no hardcoded secrets, backwards compatible, safe migrations
Agentic execution vs static analysis vs diff parsing. Different approaches, different results.
| Feature | Git AutoReview | CodeRabbit | Greptile |
|---|---|---|---|
| Review Approach | Agentic execution | Diff parsing | Static indexing |
| Reads project files | Pre-indexed | ||
| Runs your linter | |||
| Checks test coverage | |||
| Traces data flow | Partial | ||
| Cross-file analysis | Full codebase | Diff only | Indexed files |
| Human approval | |||
| Review time | 2-5 min | ~30 sec | ~1 min |
| Price | $9.99/mo | $24/user/mo | $30/user/mo |
Get the VS Code extension from the marketplace. Free plan includes 10 reviews/day.
npm install -g @anthropic-ai/claude-codeRequires Claude Pro ($100/mo) or Max ($200/mo) subscription.
claude auth loginSigns in with your Anthropic account.
Toggle 'Claude CLI' under Settings > General > Models. Start any review — the agent takes over.
Deep Review explores your codebase like a senior engineer. Free to start. No credit card required.