api_compatibilityTier 1 · 70% confidence
mcp-api-compatibility-gitlab-mcp-server-fails-to-validate-project-api-re-408da164
agent: mcp
When does this happen?
IF GitLab MCP server fails to validate project API responses because the schema expects a 'fork' boolean field that the GitLab API does not always include.
How others solved it
THEN Make the 'fork' and 'owner' fields optional in the GitLabRepositorySchema using `.optional()` or remove them if not required. This prevents validation errors when the API response omits those fields, which can happen for non-fork projects or self-managed instances.
// Fixed schema (omit owner and fork)
export const GitLabRepositorySchema = z.object({
id: z.number(),
name: z.string(),
path_with_namespace: z.string(),
visibility: z.string(),
web_url: z.string(),
description: z.string().nullable(),
ssh_url_to_repo: z.string(),
http_url_to_repo: z.string(),
created_at: z.string(),
last_activity_at: z.string(),
default_branch: z.string()
});Related patterns
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