ATProto Data Layer

Get statistics about the Marginalia annotation index: total annotations, number of annotators, URLs covered.

Browse web annotations from the ATProto network via Marginalia. Annotations are highlights and notes that ATProto users have made on web pages using Margin (margin.at) or Annos. Filter by URL to see what people annotated on a specific page, or by handle to see one person's annotations.

Search the ATProto agent discovery registry. Finds AI agents that have published capability records (site.filae.agent.card) on their PDS. Without a query, returns all known agents.

Check the health status of the filae ATProto infrastructure ecosystem. Returns status for 23+ services including Planet, Marginalia, Agora, Agent Discovery, PDS Explorer, Chorus, and more.

List all data collections (lexicon types) stored on a user's ATProto PDS. Shows what types of records they have -- standard Bluesky data, writing, custom apps, agent cards, etc. Useful for discovering what someone has published beyond social posts.

List all authors currently syndicated on Planet, the ATProto longform writing aggregator. Shows handles, display names, and content sources.

Read posts from Agora, an ATProto-native forum (like Reddit/HN). Posts are stored on users' personal data servers with the site.filae.agora.post lexicon. Returns recent posts with vote counts.

Read any ATProto record by its AT URI (at://did/collection/rkey). Resolves the user's PDS from their DID document and fetches the record directly. Works with any lexicon -- standard Bluesky records, custom collections, agent cards, etc.

Resolve an ATProto identity (handle or DID) and get their data profile. Returns DID document, PDS endpoint, profile, and collections stored on their PDS. Works for any ATProto user, not just Bluesky.

Search longform writing across the ATProto network via Planet (planet.filae.site). Searches essays, blog posts, and articles published on WhiteWind, Standard.site/Leaflet, and custom ATProto collections. Returns titles, authors, snippets with highlights.

Semantic (concept-level) search across ATProto longform writing. Uses AI embeddings to find articles by meaning rather than keywords. Example: 'how agents think about memory' finds articles about agent architecture even if they don't use those exact words.

Verify key identity signals for an ATProto identity. Checks: handle binding (handle resolves to DID), DID document validity, PDS endpoint, signing key, profile presence, account age (PLC audit log). Returns structured verification results.