Functions for creating and authenticating AtpAgent instances.

Client agent for communicating with an AT Protocol Personal Data Server (PDS). Holds the HTTP client, base URL, optional authenticated session, and extra headers.

An authenticated session with an AT Protocol Personal Data Server (PDS). Obtained by calling login with valid credentials.

Shared JSON serialization configuration for the AT Protocol.

Generic JSON converter for "known values" discriminated unions. Reads/writes string values, mapping known strings to fieldless DU cases (via [<JsonName>] attributes) and unknown strings to the Unknown of string fallback case.

Factory that intercepts types annotated with [<JsonConverter(typeof<KnownValueConverter<_>>)>] and creates the appropriate KnownValueConverter{T}. Must be registered before JsonFSharpConverter in options to take precedence (System.Text.Json checks Options.Converters before type-level attributes).

Client for the PLC Directory -- the public ledger for did:plc:* DIDs. Provides read operations (resolve, audit log, export) that require no authentication, and operation construction/signing helpers for DID document updates.

Serializes F# records to URL query strings for XRPC query parameters. Used internally by query to convert typed parameter records into query-string form.

Service-to-service JWT authentication for AT Protocol backend services (labelers, feed generators, etc.).

XRPC transport layer for AT Protocol API calls. Provides functions for executing queries (HTTP GET) and procedures (HTTP POST) against an authenticated AtpAgent.

Represents an error response from an XRPC endpoint. AT Protocol servers return JSON error bodies with optional error and message fields alongside an HTTP status code.