LinearB gitStream is a pull request automation and AI code review product from LinearB. It lets teams define programmable, policy-as-code workflows that control how code moves from pull request to production. Rules can auto-assign reviewers, add color-coded labels with estimated review time, tag high-risk changes so a security approval is required before merge, and selectively trigger CI pipelines to cut merge wait time and cost. Agentic AI assistants and AI-driven reviews sit on top of these workflows.
The product serves engineering managers, platform and DevOps teams, and developers who spend too much time on review logistics. Teams that want one set of merge standards across many repositories can encode those standards once and apply them everywhere. Security-minded organizations get a gate for risky code, and large teams can build code expertise by routing changes to the people who know that part of the codebase. Smaller teams can start with the basic features, as one customer reported time savings within two weeks of adoption.
Practical scenarios include routing a change that touches authentication code to a security reviewer, labeling small pull requests so developers can pick them up quickly, and skipping expensive CI jobs on documentation-only changes. Published figures show gitStream has processed over 200 million pull requests and auto-assigned more than 100,000 reviewers. Across repos using it, the vendor reports an average 120-day improvement of 61 percent in cycle time, 56 percent in pickup time, 38 percent in review time, and 28 percent in PR size. Sign-up uses GitHub, and it connects with version control systems, CI/CD, DevSecOps, and documentation tools.
