# AT Protocol XRPC API

**Canonical:** https://apis.io/apis/at-protocol/atproto-xrpc/  
**Provider:** AT Protocol — https://apis.io/providers/at-protocol/  
**Base URL:** https://atproto.com/xrpc  
**Documentation:** https://atproto.com/specs/xrpc

AT Protocol XRPC API is one of 12 APIs that [AT Protocol](https://apis.io/providers/at-protocol/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include XRPC, RPC, HTTP, JSON, and Protocol Surface. The published artifact set on APIs.io includes API documentation.

XRPC is the AT Protocol's HTTP-based remote procedure call layer. All protocol interactions — querying records, writing records, subscribing to streams, resolving identity, moderating content — are exposed as XRPC methods defined in Lexicon schemas. PDS, Relay, and AppView services all speak XRPC, so the same client library can be pointed at different network roles. The HTTP surface uses /xrpc/{nsid} paths and JSON request/response bodies (with optional CBOR for record content).

## Machine-readable artifacts (4)

- **Specification** — https://atproto.com/specs/xrpc
- **Documentation** — https://atproto.com/guides/glossary
- **GitHubOrganization** — https://github.com/bluesky-social
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/at-protocol/refs/heads/main/apis.yml

## Other AT Protocol APIs (11)

- [AT Protocol Lexicon Schemas](https://apis.io/apis/at-protocol/lexicon/)
- [Personal Data Server (PDS) API](https://apis.io/apis/at-protocol/pds-api/)
- [AT Protocol Relay & Firehose](https://apis.io/apis/at-protocol/relay-firehose/)
- [Bluesky AppView API](https://apis.io/apis/at-protocol/bsky-appview/)
- [AT Protocol Identity (DID & Handles)](https://apis.io/apis/at-protocol/identity-did/)
- [AT Protocol Actor API](https://apis.io/apis/at-protocol/at-protocol-actor-api/)
- [AT Protocol Feed API](https://apis.io/apis/at-protocol/at-protocol-feed-api/)
- [AT Protocol Graph API](https://apis.io/apis/at-protocol/at-protocol-graph-api/)
- [AT Protocol Identity API](https://apis.io/apis/at-protocol/at-protocol-identity-api/)
- [AT Protocol Repo API](https://apis.io/apis/at-protocol/at-protocol-repo-api/)
- [AT Protocol Server API](https://apis.io/apis/at-protocol/at-protocol-server-api/)

## Tags

XRPC, RPC, HTTP, JSON, Protocol Surface

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/at-protocol/atproto-xrpc/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/at-protocol/.