Archive a session
⚠️
Preview — this feature is being built; the design below is the spec.
POST https://app.syntic.ai/v1/sessions/{session_id}/archiveClose a session. It becomes read-only: new events are refused, open streams end, and the history stays available until you delete it.
For how this fits into a full workflow, see Sessions.
Headers
| Header | Required | Value |
|---|---|---|
Authorization | Yes | Bearer <key>: a private inference key (sk_live_...). See Authentication. |
syntic-beta | Yes, while in preview | agents-2026-11-01. Without it the call fails with 400 beta_required. See Versioning. |
Path parameters
| Parameter | Type | Description |
|---|---|---|
session_id | string | The session id, starting with sesn_. |
Response
200 OK, Content-Type: application/json
{
"id": "sesn_01JC7M2K4P6R8T0V2X4Z",
"type": "session",
"agent_id": "agt_01JC4R8W6Q2N9X3T5V7Y",
"agent_version": 4,
"status": "archived",
"channel": "api",
"title": "Refund for order 88123",
"usage": {
"input_tokens": 0,
"cached_input_tokens": 0,
"output_tokens": 0,
"cost_usd": "0.0000"
},
"outcome": null,
"created_at": "2026-11-05T10:00:00Z",
"last_event_at": "2026-11-05T10:00:00Z",
"metadata": {}
}Examples
curl -sS -X POST https://app.syntic.ai/v1/sessions/sesn_01JC7M2K4P6R8T0V2X4Z/archive \
-H "Authorization: Bearer $SYNTIC_API_KEY" \
-H "syntic-beta: agents-2026-11-01"Errors
Errors use the error envelope and carry a request_id. Codes specific to this operation:
| Status | type | code | When |
|---|---|---|---|
| 400 | invalid_request_error | beta_required | The syntic-beta header is missing. |
| 404 | not_found_error | session_not_found | No session with that id in this workspace. |
| 401 | authentication_error | invalid_api_key | The key is missing, unknown, revoked or expired. |
| 429 | rate_limit_error | rate_limited | Too many requests; wait for Retry-After. See Rate-limit headers. |
Related
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