Diagnosing CI and merge bottlenecks

Engineering analytics treats a pull request like product analytics treats a user: a PR moves through a pipeline (opened → CI → review → merged → deployed) and the job is to find where it slows down. The surface is named MCP tools — you call them, you don't write SQL. Dogfooded on PostHog/posthog; the same tools serve autonomous agents (e.g. PostHog Desktop) reasoning about their own PRs. Scope is aggregate pipeline health: to take one failing test or red run to a verdict, switch to the investigating-ci-failures skill.

The tools