Evenements WebSocket

Connection

Human WebSocket

GET wss://api.hashee.ai/ws/human

After upgrade, send auth within 5 seconds:

{ "type": "auth", "token": "<access_token>" }

Agent WebSocket

GET wss://api.hashee.ai/ws/agent?agent_id={agentId}

After upgrade, send auth within 5 seconds:

{ "type": "auth", "token": "hsk_...", "agent_id": "{agentId}" }

Auth Response

Success:

{ "type": "auth.ok" }

Failure:

{
  "type": "auth.error",
  "reason": "invalid_token",
  "message": "Token expired",
  "i18n_key": "error.auth.expired"
}

Client-to-Server Frames

`auth.renew`

Renew the access token on an existing connection. Send after refreshing the JWT via REST:

{ "type": "auth.renew", "access_token": "new_jwt..." }

Server-to-Client Events

Message Events

`message.new`

A new message in a conversation:

{
  "type": "message.new",
  "conversation_id": "uuid",
  "message_id": "uuid",
  "sender_id": "uuid",
  "sender_type": "human",
  "content_type": "text",
  "encrypted_payload": "base64...",
  "conversation_seq": 42,
  "created_at": "2026-01-01T00:00:00Z"
}

`message.ack`

Acknowledgment that a sent message was received by the server.

`message.read`

A participant read messages up to a certain sequence number.

`message.recalled`

A message was recalled by the sender:

{
  "type": "message.recalled",
  "message_id": "uuid",
  "conversation_id": "uuid",
  "recalled_by": "uuid"
}

`message.status_updated`

Message delivery status changed.

`message.pinned`

A message was pinned in a group.

Stream Events

`stream.start`

An agent began streaming a response.

`stream.delta`

A chunk of streamed content:

{
  "type": "stream.delta",
  "conversation_id": "uuid",
  "encrypted_payload": "base64..."
}

`stream.done`

Stream completed with the full encrypted payload for persistence.

`stream.abort`

Stream was cancelled by the agent.

`stream.error`

Stream timed out or hit a limit.

Relationship Events

`relation.established`

A new user started using the agent:

{
  "type": "relation.established",
  "payload": {
    "user_id": "uuid",
    "display_name": "Alice",
    "avatar_url": "https://...",
    "language": "en",
    "referral_source": "invite_link",
    "public_key": "base64..."
  }
}

The SDK automatically caches the public_key from this event.

`relation.terminated`

User disconnected from the agent:

{ "type": "relation.terminated", "payload": { "user_id": "uuid" } }

`relation.suspended`

User was suspended by the creator:

{ "type": "relation.suspended", "payload": { "user_id": "uuid" } }

`relation.restored`

User was restored by the creator:

{ "type": "relation.restored", "payload": { "user_id": "uuid" } }

Artifact Events

`artifact_response`

User responded to an artifact (form submission, button click):

{
  "type": "artifact_response",
  "payload": {
    "conversation_id": "uuid",
    "message_id": "uuid",
    "ref_artifact": "artifact_id",
    "ref_action": "submit",
    "based_on_revision": 1,
    "values": { "name": "My Project" }
  }
}

`artifact_update`

An agent updated an artifact (WebSocket delivery to human clients).

`artifact.expired`

An artifact’s TTL expired:

{
  "type": "artifact.expired",
  "payload": {
    "conversation_id": "uuid",
    "message_id": "uuid",
    "artifact_id": "uuid"
  }
}

Agent Events

`agent.governance`

Agent governance status changed (WebSocket only, not delivered via webhook):

{
  "type": "agent.governance",
  "payload": {
    "agent_template_id": "uuid",
    "governance_status": "suspended",
    "reason": "Policy violation"
  }
}

If status is suspended or banned, the WebSocket connection is terminated.

`agent.status`

Agent online/offline status changed.

`agent.typing`

Agent is typing.

Reaction Events

`reaction.update`

Reactions on a message changed (aggregate state):

{
  "type": "reaction.update",
  "payload": {
    "message_id": "uuid",
    "reactions": [
      { "emoji": "thumbsup", "count": 3, "user_ids": ["uuid1", "uuid2", "uuid3"] }
    ]
  }
}

Group Events

`group.updated`

Group info changed (name, avatar, settings):

{
  "type": "group.updated",
  "payload": {
    "conversation_id": "uuid",
    "changes": { "name": "New Group Name" }
  }
}

Session Events

`auth.expiring`

Advisory: access token is about to expire. Client should refresh via REST and send auth.renew:

{ "type": "auth.expiring", "expires_in_seconds": 60 }

`session.invalidated`

Server terminated the session (device kicked, password changed, etc.):

{
  "type": "session.invalidated",
  "payload": {
    "reason": "device_removed",
    "message": "Session terminated",
    "i18n_key": "error.session.invalidated"
  }
}

`error`

Generic WebSocket error:

{
  "type": "error",
  "payload": {
    "code": "RATE_LIMITED",
    "message": "Too many requests",
    "i18n_key": "error.rate_limited"
  }
}

Event Delivery by Transport

Event	WebSocket	Webhook
`message.new`	Yes	Yes
`relation.established`	Yes	Yes
`relation.terminated`	Yes	Yes
`relation.suspended`	Yes	Yes
`relation.restored`	Yes	Yes
`artifact_response`	Yes	Yes
`agent.governance`	Yes	No
`reaction.update`	Yes	No
`group.updated`	Yes	No
`artifact.expired`	Yes	No
`session.invalidated`	Yes	No
`auth.expiring`	Yes	No

Long Polling delivers the same event set as Webhook.

Next Steps

REST Endpoints — HTTP endpoint reference
Error Codes — Error code table
Streaming — SDK streaming guide