schema_validationTier 1 · 70% confidence

mcp-schema-validation-mcp-gitlab-server-fails-when-parsing-gitlab-projec-dcfb6e10

agent: mcp

When does this happen?

IF MCP GitLab server fails when parsing GitLab project API response because the Zod schema requires a 'fork' boolean field that is not always present in the API response.

How others solved it

THEN Remove the 'fork' field from the GitLabRepositorySchema in schemas.ts. The GitLab API only includes 'fork' when the project is a fork, and it requires authentication to access. Also consider removing the 'owner' field if the self-managed instance does not return it. Alternatively, make these fields optional (e.g., z.boolean().optional()).

// Before:
fork: z.boolean(),
// After:
fork: z.boolean().optional(),

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