Generate Session Title

POST/api/v1/chat/{session_id}/title

Generate a title for a session from its first user message.

Path ParametersExpand Collapse

session_id: string

Query ParametersExpand Collapse

organization_id: optional string

project_id: optional string

Cookie ParametersExpand Collapse

session: optional string

Body ParametersJSONExpand Collapse

first_message: string

First user message of the session, used to infer a short title.

ReturnsExpand Collapse

last_updated_at: string

ISO-format timestamp showing when the session was last updated.

session_id: string

Unique session identifier.

generated_title: optional string

Auto-generated title derived from the first user message.

index_ids: optional array of string

Indexes this session is bound to. Null on unbound sessions.

job_metadata: optional object { duration_ms, error, export_config_ids, 4 more }

Token usage and status from the most recent run. Null if the session has not been run yet.

duration_ms: optional number

error: optional string

export_config_ids: optional array of string

is_error: optional boolean

total_input_tokens: optional number

total_output_tokens: optional number

turns: optional number

Generate Session Title

curl https://api.cloud.llamaindex.ai/api/v1/chat/$SESSION_ID/title \
    -H 'Content-Type: application/json' \
    -H "Authorization: Bearer $LLAMA_CLOUD_API_KEY" \
    -d '{
          "first_message": "What were the main findings in Q3?"
        }'

{
  "last_updated_at": "2026-04-22T12:34:41.342245",
  "session_id": "ses-abc123",
  "generated_title": "What were the main findings in Q3?...",
  "index_ids": [
    "idx-abc123",
    "idx-def456"
  ],
  "job_metadata": {
    "duration_ms": 0,
    "error": "error",
    "export_config_ids": [
      "string"
    ],
    "is_error": true,
    "total_input_tokens": 0,
    "total_output_tokens": 0,
    "turns": 0
  }
}

Returns Examples

{
  "last_updated_at": "2026-04-22T12:34:41.342245",
  "session_id": "ses-abc123",
  "generated_title": "What were the main findings in Q3?...",
  "index_ids": [
    "idx-abc123",
    "idx-def456"
  ],
  "job_metadata": {
    "duration_ms": 0,
    "error": "error",
    "export_config_ids": [
      "string"
    ],
    "is_error": true,
    "total_input_tokens": 0,
    "total_output_tokens": 0,
    "turns": 0
  }
}