# AT Protocol Identity (DID & Handles)

**Canonical:** https://apis.io/apis/atproto/identity-did/  
**Provider:** AT Protocol — https://apis.io/providers/atproto/  
**Base URL:** https://plc.directory  
**Documentation:** https://atproto.com/specs/did

AT Protocol Identity (DID & Handles) is one of 15 APIs that [AT Protocol](https://apis.io/providers/atproto/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Identity, DID, did:plc, Handles, and DNS.

Identity in AT Protocol is anchored in DIDs (did:plc or did:web), with human-readable handles resolved through DNS TXT records or well-known HTTP endpoints. The protocol specifies how DIDs map to PDS endpoints, signing keys, and rotation, allowing users to keep a stable identity while changing handles or migrating providers.

## Machine-readable artifacts (3)

- **Specification** — https://atproto.com/specs/did
- **Specification** — https://atproto.com/specs/handle
- **Services** — https://plc.directory/

## Other AT Protocol APIs (12)

- [AT Protocol Firehose (Event Stream)](https://apis.io/apis/atproto/firehose/)
- [AT Protocol actor API](https://apis.io/apis/atproto/atproto-actor-api/)
- [AT Protocol feed API](https://apis.io/apis/atproto/atproto-feed-api/)
- [AT Protocol graph API](https://apis.io/apis/atproto/atproto-graph-api/)
- [AT Protocol identity API](https://apis.io/apis/atproto/atproto-identity-api/)
- [AT Protocol notification API](https://apis.io/apis/atproto/atproto-notification-api/)
- [AT Protocol repo API](https://apis.io/apis/atproto/atproto-repo-api/)
- [AT Protocol server API](https://apis.io/apis/atproto/atproto-server-api/)
- [AT Protocol sync API](https://apis.io/apis/atproto/atproto-sync-api/)
- [AT Protocol XRPC API](https://apis.io/apis/atproto/atproto-xrpc/)
- [AT Protocol Lexicon Schemas](https://apis.io/apis/atproto/lexicon/)
- [Personal Data Server (PDS) API](https://apis.io/apis/atproto/pds-api/)

## Tags

Identity, DID, did:plc, Handles, DNS

---

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