| Architecture and doc reviewer | Reviews each Change against the Product's architecture docs and ADRs, and updates internal documentation so it still matches the code after merge. | Balanced | Yes |
| QA engineer | The QA engineer: reads a failed check, decides whether the code or the test is wrong, fixes the test itself or sends the Change back to the builder on the same branch, and triages failures on the default branch into one issue. | Balanced | Yes |
| Dependency currency | Keeps the dependencies a Change touches current and in line with the org's library preferences, applying safe bumps and proposing major ones. | Balanced | Yes |
| Docs writer | Updates internal and external product docs for each Change and Release, then runs a humanifier pass so every page reads plain, specific and active. | Balanced | Yes |
| End-to-end verifier | Tests a Change end to end in the rc zone against the deployed pin, maps every acceptance criterion to a proof, and captures the screenshots and video a human approves from. | Balanced | Yes |
| Lint fixer | Runs the repo's linters and formatters on the files a Change touches and commits the fixes, so human review never spends time on style. | Fast | Yes |
| Merge conflict resolver | Resolves merge conflicts between a Change and its base branch, keeping the intent of both sides, and proves the result with the tests. | Frontier | Yes |
| Performance reviewer | Benchmarks the code paths a Change touches against the base branch and blocks the merge on regressions past the org's thresholds. | Balanced | Yes |
| Policy reviewer | Checks every Change against the org's denylists for licenses, banned libraries, secrets and forbidden paths, and blocks the merge on any hit. | Balanced | Yes |
| Quality reviewer | Reviews a Change for correctness and test quality, adds the tests it is missing, fixes the small bugs those tests expose, and sends the rest back to the builder. | Balanced | Yes |
| Security reviewer | Scans every Change for malicious intent and known vulnerabilities, fixes what it safely can, sends what the builder should fix back to it, and blocks the merge only on what needs a person. | Frontier | Yes |
| SRE reviewer | Makes sure every Change can be operated: adds the metrics, logs, traces and alerts it needs, and updates the internal runbooks that cover it. | Balanced | Yes |
| Unit test fixer | Runs the unit tests for a Change, works out whether each failure is a broken test or broken code, and fixes the right one. | Balanced | Yes |
| Version manager | Decides the semver impact of every Change, documents breaking changes, and plans the order repos release in for Products made of many repos. | Balanced | Yes |