GitLab

REST swagger + GraphQL introspection both fetchable.

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GitLab REST API v4

Verified

Format: Swagger 2.0 · 2.0
Source: Vendor
URL: https://gitlab.com/gitlab-org/gitlab/-/raw/master/doc/api/openapi/openapi_v2.yaml
Server: https://gitlab.com
Operations: 1,150
API version: v4
Last changed: 31 Oct 2026
sha256: f8fdcc6c047db9f1… · 2.3 MB

Generated Swagger 2.0 in the GitLab repo (doc/api/openapi/openapi_v2.yaml), ~2.4 MB; not exhaustive of every documented endpoint. No license field in spec.

GitLab GraphQL API

Verified

Format: GraphQL
Source: Vendor
URL: https://gitlab.com/api/graphql
Server: https://gitlab.com/api/graphql
Operations: 900
Last changed: 2 Nov 2026
sha256: 0ca83d0a6a0dae6f… · 8.3 MB

Anonymous introspection works: 176 Query fields + 722 Mutation fields (count includes deprecated).