Archive a session

⚠️
Preview — this feature is being built; the design below is the spec.
POST https://app.syntic.ai/v1/sessions/{session_id}/archive

Close 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

HeaderRequiredValue
AuthorizationYesBearer <key>: a private inference key (sk_live_...). See Authentication.
syntic-betaYes, while in previewagents-2026-11-01. Without it the call fails with 400 beta_required. See Versioning.

Path parameters

ParameterTypeDescription
session_idstringThe 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:

StatustypecodeWhen
400invalid_request_errorbeta_requiredThe syntic-beta header is missing.
404not_found_errorsession_not_foundNo session with that id in this workspace.
401authentication_errorinvalid_api_keyThe key is missing, unknown, revoked or expired.
429rate_limit_errorrate_limitedToo many requests; wait for Retry-After. See Rate-limit headers.
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