The MCP server and sem-ai are coming to Semaphore open source. Version 1.6 arrives exactly one year after 1.5 and packages up around 494 pull requests of new capabilities, built over the past year and now shared with the community.
What Shipped
MCP server in the open source editions
The MCP server is now included in both the Community Edition and the Enterprise Edition of Semaphore open source. It’s part of a broader push this year to bring AI and automation tools into Semaphore.
sem-ai works out of the box
sem-ai is fully supported with no additional configuration necessary. It works with both service accounts and user tokens.
New public API endpoints
There are a lot of new public API endpoints, including endpoints for artifacts and for pre-flight checks in the Enterprise Edition. Artifacts are now supported through the REST API. The result: almost everything in Semaphore is now configurable from the API, either through sem-ai or through the regular API endpoints.
Partial job reruns
Long and complex pipelines no longer need a full rerun. With partial job reruns, not everything needs to be rerun now.
New filtering options in the UI
The UI gets new filtering options.
RustFS replaces MinIO for artifact storage
Semaphore previously used MinIO as its artifact storage engine. With MinIO moving away from the open source community, we switched to RustFS as the replacement. RustFS also powers our tests.
Security fixes and improvements
The release also includes a lot of security fixes and general improvements.
What’s Coming
The release candidate will be ready in the next couple of days, and it will include the extended changelog with the full list of changes.
As always, we accept PRs from the community. If you have comments or suggestions, open an issue or a PR on the Semaphore repository. All contributions and feedback are very welcome.
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