Conversation history

Returns a summary list of the authenticated user’s most recent causal chat sessions, each with a preview of the last message. Use this endpoint to populate history panels or session pickers in your integration.

To retrieve the full message list for a specific session, use GET /api/causal-chat/sessions/.

Endpoint

GET /api/causal-chat/history

Authentication

Required. Include a session cookie or Authorization: Bearer <token> header. Unauthenticated requests return 401 Unauthorized.

Request

This endpoint accepts no query parameters or request body.

Headers

string

required

Bearer token for API authentication. Format: Bearer <token>.

Response

Status: 200 OK
Content-Type: application/json Returns a list of recent sessions, each containing metadata and a preview of the last message. Sessions are ordered by most recently updated first.

object[]

required

Array of recent session objects.

Hide session properties

string

required

UUID identifying the session. Pass this as sessionId in subsequent POST /api/causal-chat requests to continue the conversation.

string

required

Title of the session, derived from the first question asked.

string

required

ISO 8601 timestamp of the most recent message in the session.

string

Primary domain label for the session, e.g. "neuroscience" or "economics". May be null if the first message has not yet been classified.

object

Preview of the most recent message in the session.

Show last_message properties

string

required

Role of the last message author: "user" or "assistant".

string

required

Truncated content of the last message, suitable for display in a list view.

string

required

ISO 8601 timestamp when the last message was created.

Examples

curl --request GET \
  --url https://wuweism.com/api/causal-chat/history \
  --header 'Authorization: Bearer <token>'

const response = await fetch('https://wuweism.com/api/causal-chat/history', {
  headers: {
    'Authorization': 'Bearer <token>',
  },
});
const data = await response.json();
console.log(data.sessions);

import requests

response = requests.get(
    'https://wuweism.com/api/causal-chat/history',
    headers={'Authorization': 'Bearer <token>'},
)
data = response.json()
print(data['sessions'])

200

{
  "sessions": [
    {
      "id": "3f2504e0-4f89-11d3-9a0c-0305e82c3301",
      "title": "Does cortisol exposure causally increase hippocampal volume reduction?",
      "updated_at": "2026-04-05T14:32:00Z",
      "domain_classified": "neuroscience",
      "last_message": {
        "role": "assistant",
        "content_preview": "Yes. The causal pathway from elevated cortisol to hippocampal volume reduction is well-supported...",
        "created_at": "2026-04-05T14:32:00Z"
      }
    },
    {
      "id": "6ba7b810-9dad-11d1-80b4-00c04fd430c8",
      "title": "What is the causal effect of sleep deprivation on reaction time?",
      "updated_at": "2026-04-04T09:15:00Z",
      "domain_classified": "cognitive_science",
      "last_message": {
        "role": "user",
        "content_preview": "Can you break down the adjustment set used in that analysis?",
        "created_at": "2026-04-04T09:15:00Z"
      }
    }
  ]
}

Error responses

Status	Description
`401`	Missing or invalid authentication credentials.

Overview

Causal Chat

SCM

Claims & Synthesis

Conversation history

Endpoint

Authentication

Request

Headers

Response

Examples

Error responses

​Endpoint

​Authentication

​Request

​Headers

​Response

​Examples

​Error responses

Endpoint

Authentication

Request

Headers

Response

Examples

Error responses