atpkt

A professional-grade, modular ATProtocol SDK for Kotlin.

Overview

atpkt provides the foundational building blocks for interacting with the Authenticated Transfer Protocol (AT Protocol). Designed with a library-first architecture, it decouples core networking, authentication, and repository management logic from specific service implementations.

Architecture

atpkt follows the official ATProtocol "Agent" design:

• Core Library: Networking, XRPC client, and Session management.
• Namespaced API: Hierarchical access to protocol endpoints (e.g., agent.com.atproto.*, agent.app.bsky.*).
• Lexicon Registry: Auto-generation of type-safe Kotlin models from official schema definitions (using KotlinPoet).
• Repository Foundations: Content-addressed storage and Merkle Search Tree (MST) structures.
• Streaming: Reactive, authenticated WebSocket subscription client.

Roadmap

• Core extraction (Tid, AtProtoClient, SessionManager, RecordManager)
• Namespaced API structure
• AST-driven Lexicon generation (KotlinPoet)
• MST & CID foundations
• WebSocket Subscription (Firehose) support
• DID/PLC Identity resolution
• OAuth2 / DPoP compliance