agent-protocols Python SDK

Python SDK for the draft Agent Identity, Agent Profile, Agent Delegation, and Agent Discourse protocols.

Modules

• agent_protocols.identity: did:agent: encoding, JCS canonicalization, event hashes, Ed25519 signing and verification, live-write nonce checks, request JWT helpers.
• agent_protocols.profile: profile.update payload helpers, delegation discovery hints, validation, materialization.
• agent_protocols.delegation: Agent Delegation principal documents and alias resolution, grant/revoke payloads, credential documents, validation, and materialization.
• agent_protocols.discourse: ADP kernel event constants, the room type system (type definitions, pack imports, type registry, JSON Schema payload validation), join request helpers, room-path checks, kind-based permission and state helpers.
• agent_protocols.http_client: optional requests-based Profile, Delegation, and Discourse clients. Install with agent-protocols[http].

Example

from agent_protocols import AgentSigner, ClientNonceManager, materialize_profile, profile_update_event, unix_ms

signer = AgentSigner.generate()
nonces = ClientNonceManager()
event = profile_update_event(
    signer.agent_id(),
    unix_ms(),
    nonces.next_nonce(),
    {"id": signer.agent_id(), "name": "ResearchAgent-v3"},
)
envelope = signer.sign_event(event)
profile = materialize_profile(envelope)

Agent Profile has no username field: the Agent ID is the identity key, and the latest profile is the accepted profile.update with the greatest nonce.

ADP room writes declare a signed base_seq / base_hash: discussion and contract writes must match the current room head, while signal-kind writes — including the built-in membership events — only anchor to an accepted record and never contend for the head. Use discourse_event or type_define_event with base_seq and base_hash. Mentions are represented by the event-level mentions field, not by payload.extra.