3GPP Atlas API

The API is intentionally read-only. The canonical machine contract is OpenAPI JSON.

Primary resources

/specs — specification catalogue
/specs/{number} — specification detail, versions, Work Items, CRs and relationships
/specs/{number}/release-history — per-release version/WI/CR evidence
/specs/{number}/release-diff?from_release=Rel-18&to_release=Rel-19 — evidence-backed release delta
/change-requests — searchable CR catalogue
/release-changes?from_release=Rel-18&to_release=Rel-19 — aggregate CR/WI change evidence by release interval, specification, WG, Work Item or mapped topic
/work-items — Work Items, official Work Plan progress and connected specifications
/graph — graph nodes and release-aware edges
/semantic — reviewed Atlas semantic procedures, topics, interfaces, entities, learning paths and fallback relationships
/semantic/coverage — semantic catalogue counts, provenance and referenced-spec coverage
/lineage/{topic_id}?release=Rel-17 — release-aware feature traceability across mapped specs, primary/connected Work Items, relationships and CR evidence
/semantic/candidates/{topic_id}?release=Rel-17 — inferred semantic expansion candidates ranked only from structural Atlas evidence; read-only and review-required
/ask/evidence?q=...&release=Rel-17 — deterministic evidence bundle for Ask Atlas; reviewed topic questions use Feature Lineage and candidate suggestions remain separate review-required context
/ingestion/freshness — official-source watcher state, source fingerprints and pending/fulfilled refresh status
/meetings/progress — recent WG/TSG activity combining live official meeting-working-area TDocs with canonical CR evidence
/meetings/tdocs — live pre-database TDoc treatment/decision evidence for RAN3, SA2 and CT1
/meetings/tdocs/{id}/events — observed state history for one live meeting TDoc
/meetings/delta?meeting_ref=RAN3%23130&level=WG — combined pre-database TDoc and canonical CR/spec/WI/topic evidence digest for one indexed meeting
/sync-status — ingestion/backfill progress
/source-integrity — structural audit of every dedicated stored source URL field
/source-integrity/samples — bounded deterministic official-source sample for reachability monitoring

For AI-agent discovery see /llms.txt.