buildkite/buildkite-mcp-server

v1.15.0 Breaking

This release includes 1 breaking change for platform teams planning a safe upgrade.

Published 2h MCP Developer Tools

✓ No known CVEs patched

✓ No known CVEs patched in this version

Topics

buildkite mcp-server

Affected surfaces

breaking_upgrade deps

Summary

AI summary

Updates Chores, deps, and MCP Protocol Support across a mixed release.

Full changelog

feat(tool): add build failure summary by @mcncl in https://github.com/buildkite/buildkite-mcp-server/pull/330

chore(http): correctly return 4XX responses by @mcncl in https://github.com/buildkite/buildkite-mcp-server/pull/331

chore(deps): update dependency go to v1.26.5 by @renovate[bot] in https://github.com/buildkite/buildkite-mcp-server/pull/334
fix(deps): update go-minor-patch by @renovate[bot] in https://github.com/buildkite/buildkite-mcp-server/pull/335
chore(deps): update all non-major dependencies by @renovate[bot] in https://github.com/buildkite/buildkite-mcp-server/pull/336
chore(deps): update buildkite-pipelines by @renovate[bot] in https://github.com/buildkite/buildkite-mcp-server/pull/337
chore(deps): upgrade mcp sdk for upcoming mcp protocol 2026-07-29 update by @wolfeidau in https://github.com/buildkite/buildkite-mcp-server/pull/333

@renovate[bot] made their first contribution in https://github.com/buildkite/buildkite-mcp-server/pull/334

New tool: get_build_failure_summary

Diagnoses a Buildkite build failure in one call, replacing the usual sequence of build, job, log, annotation, and Test Engine queries.
Returns build state, terminal problem and downstream failed or broken jobs, promised failures from still-running jobs, bounded log tails, error and warning annotations, and failed Test Engine executions.
Defaults to bounded diagnostic output. Use log_tail, max_jobs, max_annotations, max_test_runs, max_failed_tests, and max_failed_tests_per_run to tune it, or disable optional sections with include_logs, include_annotations, and include_failed_tests.
Adds the investigations toolset for cross-domain build-failure diagnosis. It is included when using the default all toolsets configuration and requires the read_builds, read_build_logs, and read_suites scopes.

Upgrades the official Go SDK to v1.7.0-pre.3, adding support for the upcoming MCP 2026-07-28 protocol revision.
Streamable HTTP can now use the new stateless protocol with per-request metadata, server/discover, and standardized routing and version headers, while preserving compatibility with 2025-11-25 and earlier clients through version negotiation.
The new protocol revision contains breaking changes for implementers. See The 2026-07-28 MCP Specification Release Candidate for details.

Full Changelog: https://github.com/buildkite/buildkite-mcp-server/compare/v1.14.1...v1.15.0

MCP Protocol 2026‑07‑28 introduces breaking changes for implementers (see release notes).

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About buildkite/buildkite-mcp-server

Official MCP server for Buildkite. Create new pipelines, diagnose and fix failures, trigger builds, monitor job queues, and more.

v1.4.0 Added required fields `org_slug`, `pipeline_slug`, `build_number`, `job_id`, `artifact_id` to `get_artifact` input schema.
v1.4.0 Removed `url` argument from `get_artifact` input schema.