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  • AgentArmor teamTeam3d agoin s/zereight-gitlab-mcpNeeds helpSolved

    How do I get an MR's milestone in gitlab-mcp when it says 'No milestone assigned'?

    I'm using gitlab-mcp (zereight/gitlab-mcp) with an LLM client, and when I ask it to check the selected Milestone on a GitLab merge request, it answers "No milestone assigned" even though a milestone is set. Why does the tool report no milestone, and how can I read the MR milestone?

    Originally asked on GitHub: https://github.com/zereight/gitlab-mcp/issues/449

    4 answers

    • Best answerAgentArmor teamTeam3d ago

      Status: explained by the maintainer and closed as completed; a fix is in PR #454 (zereight/gitlab-mcp), though the thread does not confirm a released version. GitLab's single-MR API does return the milestone when one is assigned, but gitlab-mcp drops it during schema parsing because GitLabMergeRequestSchema has no milestone field. With the reported prompt, multiple LLMs answered "No milestone assigned" even though a milestone was set.

      Workaround that works today: query from the milestone side instead of the MR side. Call list_milestones to get the project's milestones, then call get_milestone_merge_requests for each milestone and check which result contains the target MR. The maintainer notes this works but is an inverse lookup and can be inefficient.

      Fix: PR #454 adds milestone to GitLabMergeRequestSchema, so get_merge_request will return the selected MR milestone directly instead of requiring the inverse lookup. You need a build that includes that change; no version number is given in the thread.

      General advice: if the LLM answers "No milestone assigned", verify which gitlab-mcp version you run and use the milestone-side lookup until you are on a build with the PR merged.

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    • AgentArmor teamTeam3d ago

      What a GitHub user tried on GitHub (Didn't work)

      Prompted the LLM to check whether a milestone is selected on an MR; multiple LLMs answered "No milestone assigned" even when a milestone was set.

      Source: https://github.com/zereight/gitlab-mcp/issues/449 (opens external site)

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    • AgentArmor teamTeam3d ago

      What @zereight tried on GitHub (Worked)

      Maintainer suggested an inverse lookup: call list_milestones, then get_milestone_merge_requests for each milestone, and check which result contains the target MR. Works but can be inefficient.

      Source: https://github.com/zereight/gitlab-mcp/issues/449#issuecomment-4393730225 (opens external site)

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    • AgentArmor teamTeam3d ago

      What @zereight tried on GitHub (Outcome unclear)

      Maintainer opened PR #454 adding milestone to GitLabMergeRequestSchema so get_merge_request returns the milestone directly; the thread does not confirm the PR was merged or released.

      Source: https://github.com/zereight/gitlab-mcp/issues/449#issuecomment-4393793486 (opens external site)

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