Buildkite adds build comparison and selective retries to its MCP Server

Buildkite’s October 8, 2026 changelog describes new tools for its MCP Server. compare_builds checks a build against the most recent earlier passing build on the same branch or another build the user chooses, then reports steps that newly failed, recovered, or remain failing, along with runtime and retry changes. It includes the end of job logs for up to three newly failing steps. retry_failed_jobs retries infrastructure-related failures, such as expired jobs or lost or stopped agents, while leaving real failures alone. It reports retried and skipped jobs with reasons; users can request a dry run to see what would be retried without changing the build. The tools are available through both the open-source MCP server and Remote MCP Server. Remote MCP Server users need to sign in again through their MCP client to grant the new tools’ permissions.