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POST
/
api
/
assistants
/
threads
/
{threadId}
/
messages
Add a message to a session thread
curl --request POST \
  --url https://agent-service-511985928315.us-east4.run.app/api/assistants/threads/{threadId}/messages \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'X-Envole-User-Id: <api-key>' \
  --data '{
  "content": [
    {
      "type": "text",
      "text": "Hi what can you do for me"
    }
  ]
}'
{
  "type": "AGENT_RESPONSE_CHUNK",
  "eventId": "",
  "threadId": "",
  "requestId": "",
  "eventMessage": {
    "agent": null,
    "content": "Hel",
    "collaborationId": null,
    "activeAssistantCollaborationRequired": null,
    "toolExecutionApprovalRequest": null,
    "timestamp": "2025-08-12T00:00:00"
  }
}
Send a new message to a session thread and receive updates as it is processed. Responses are returned as Server-Sent Events that stream message processing updates. See the Streaming section for event types and payload formats.

Authorizations

​
Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

​
X-Envole-User-Id
string
header
required

External user identifier; not necessarily registered with Envole

Path Parameters

​
threadId
string
required

Body

application/json
​
content
(Text · object | Tool Approval Result · object | File · object | Image · object)[]
required
  • Text
  • Tool Approval Result
  • File
  • Image

Response

SSE stream of events from the agent.

​
type
enum<string>
required
Available options:
CONNECTION_ESTABLISHED,
MESSAGE_RECEIVED,
AGENT_RESPONSE_CHUNK,
AGENT_RESPONSE_COMPLETE,
TOOL_EXECUTION_APPROVAL_REQUEST,
TOOL_EXECUTION_APPROVAL_RESPONSE,
NOTIFICATION_TOOL_EXECUTION_INITIATED,
NOTIFICATION_TOOL_EXECUTION_IN_PROGRESS,
NOTIFICATION_TOOL_EXECUTION_APPROVAL_REQUIRED,
NOTIFICATION_TOOL_EXECUTION_APPROVAL_ACCEPTED,
NOTIFICATION_TOOL_EXECUTION_APPROVAL_DENIED,
NOTIFICATION_TOOL_EXECUTION_APPROVAL_ABORTED,
NOTIFICATION_AGENT_THINKING_STARTED,
NOTIFICATION_AGENT_THINKING_COMPLETE,
NOTIFICATION_KNOWLEDGE_RETRIEVAL_INITIATED,
NOTIFICATION_KNOWLEDGE_RETRIEVAL_IN_PROGRESS,
NOTIFICATION_KNOWLEDGE_RETRIEVAL_COMPLETED,
NOTIFICATION_KNOWLEDGE_RETRIEVAL_FAILED,
NOTIFICATION_KNOWLEDGE_RETRIEVAL_DUPLICATED_CACHED,
NOTIFICATION_REQUEST_ORCHESTRATION_SIMPLE,
NOTIFICATION_REQUEST_ORCHESTRATION_COMPLEX,
NOTIFICATION_REQUEST_ORCHESTRATION_CAPABILITIES,
NOTIFICATION_REQUEST_ORCHESTRATION_KNOWLEDGE_BASE,
NOTIFICATION_REQUEST_ORCHESTRATION_TOOL_USAGE,
NOTIFICATION_REQUEST_ORCHESTRATION_COLLABORATION,
NOTIFICATION_PLAN_ORCHESTRATION_COMPLEX_INITIATED,
NOTIFICATION_PLAN_ORCHESTRATION_COMPLEX_IN_PROGRESS,
NOTIFICATION_PLAN_ORCHESTRATION_COMPLEX_COMPLETED,
NOTIFICATION_PLAN_ORCHESTRATION_COMPLEX_REVIEW_INITIATED,
NOTIFICATION_PLAN_ORCHESTRATION_COMPLEX_REVIEW_IN_PROGRESS,
NOTIFICATION_PLAN_ORCHESTRATION_COMPLEX_REVIEW_COMPLETED,
NOTIFICATION_PLAN_ORCHESTRATION_KNOWLEDGE_BASE_INITIATED,
NOTIFICATION_PLAN_ORCHESTRATION_KNOWLEDGE_BASE_IN_PROGRESS,
NOTIFICATION_PLAN_ORCHESTRATION_KNOWLEDGE_BASE_COMPLETED,
NOTIFICATION_PLAN_ORCHESTRATION_KNOWLEDGE_RETRIEVAL_INITIATED,
NOTIFICATION_PLAN_ORCHESTRATION_TOOL_USAGE_INITIATED,
NOTIFICATION_PLAN_ORCHESTRATION_TOOL_USAGE_IN_PROGRESS,
NOTIFICATION_PLAN_ORCHESTRATION_TOOL_USAGE_COMPLETED,
NOTIFICATION_PLAN_ORCHESTRATION_REFLECTION_INITIATED,
NOTIFICATION_PLAN_ORCHESTRATION_REFLECTION_ABORTED,
NOTIFICATION_PLAN_ORCHESTRATION_REFLECTION_FAILED,
NOTIFICATION_PLAN_ORCHESTRATION_REFLECTION_COMPLETED,
NOTIFICATION_PLAN_ORCHESTRATION_COLLABORATION_INITIATED,
NOTIFICATION_PLAN_ORCHESTRATION_COLLABORATION_IN_PROGRESS,
NOTIFICATION_PLAN_ORCHESTRATION_COLLABORATION_COMPLETED,
NOTIFICATION_MULTI_ASSISTANT_COLLABORATION_STARTED,
NOTIFICATION_MULTI_ASSISTANT_COLLABORATION_ASSISTANT_RESPONSE_IN_PROGRESS,
NOTIFICATION_MULTI_ASSISTANT_COLLABORATION_ASSISTANT_RESPONSE_COMPLETED,
NOTIFICATION_MULTI_ASSISTANT_COLLABORATION_UNIFIED_RESPONSE_STARTED,
NOTIFICATION_MULTI_ASSISTANT_COLLABORATION_NO_UNIFIED_RESPONSE_REQUIRED,
NOTIFICATION_MULTI_ASSISTANT_COLLABORATION_COMPLETED,
NOTIFICATION_MULTI_ASSISTANT_COLLABORATION_FAILED,
NOTIFICATION_CONTEXT_MEMORIES_RETRIEVAL_FAILED,
ERROR
​
eventId
string
required
​
threadId
string
required
​
requestId
string
required
​
eventMessage
object
required
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