List execution traces

⚠️
Preview — this feature is being built; the design below is the spec.
GET https://app.syntic.ai/v1/agents/executions/{execution_id}/traces

Return a run’s traces in step order, for runs too long to read in one response.

For how this fits into a full workflow, see Executions.

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
execution_idstringThe run id, starting with exec_.

Query parameters

ParameterTypeDefaultDescription
after_stepintegerReturn steps after this number.
limitinteger1001 to 200.

Response

200 OK, Content-Type: application/json

{
  "data": [
    {
      "step": 200,
      "step_type": "tool_call",
      "label": "lookup_order",
      "input": {
        "order_id": "88123"
      },
      "output": {
        "error": "order not found"
      },
      "error": "order not found",
      "started_at": "2026-11-05T10:00:05Z",
      "ended_at": "2026-11-05T10:00:06Z",
      "duration_ms": 412,
      "usage": null
    }
  ],
  "has_more": true,
  "last_step": 399
}

Examples

curl -sS "https://app.syntic.ai/v1/agents/executions/exec_01JC7N0Q8S2U4W6Y8A0C/traces?after_step=199&limit=200" \
  -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_errorexecution_not_foundNo run 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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