Tetherlab vs CodeRabbit
Overview
CodeRabbit reviews code once a pull request exists. Tetherlab catches coordination conflicts before any code is written. They sit at opposite ends of the lifecycle, address different failure modes, and work well on the same codebase at the same time.
What CodeRabbit does
CodeRabbit connects to GitHub, GitLab, and other hosts to review pull requests automatically, with linter and SAST integration, plus IDE and CLI reviews. It operates at the post-write stage: it reads the diff and comments on it. It has also launched an Issue Planner beta that moves it a little upstream, which is worth tracking.
Two different stages
CodeRabbit sees the result. It reviews code that already exists, in a PR. Tetherlab sees the intent. It matches each agent's plan against the shared concept registry and flags overlap before either agent writes. If Tetherlab resolves a collision at the plan stage, there is no conflicting PR for CodeRabbit to review later.
Side by side
| Capability | Tetherlab | CodeRabbit |
|---|---|---|
| Acts before code is written | ||
| Reviews finished pull requests | ||
| Prevents two agents building conflicting work | ||
| Cross-machine agent coordination | ||
| Record of changes | Signed per intent | PR-level review history |
Use both
Tetherlab prevents the collisions that would otherwise reach review. CodeRabbit reviews the code that passes through for correctness and taste. One works at the plan stage, the other at the PR stage. Running both covers more of the lifecycle than either alone.
Next steps
For the record Tetherlab keeps of every decision, see audit-grade by construction. For the mechanism, see intent-level conflict detection.
Frequently asked questions
- Does Tetherlab mean we can skip code review?
No. Tetherlab prevents coordination conflicts before code is written; it does not judge the correctness or taste of a change. CodeRabbit and human review still belong at the PR stage. The two are complementary.
- When does Tetherlab act compared to CodeRabbit?
Tetherlab acts at the plan stage, before any file is written. CodeRabbit acts after a pull request exists. If Tetherlab resolves a conflict early, there is no conflicting PR to review.
- Does Tetherlab integrate with GitHub like CodeRabbit?
Tetherlab is not a PR bot. It wraps agent CLIs locally and coordinates through a master per git remote. Git stays underneath, so your existing GitHub or GitLab workflow and any PR review tooling continue to work.