Ingest spans

Batch-ingest spans for a run. Idempotent: a span carrying an id is upserted, so a retried batch never duplicates.

POST/api/v2/runs/{runId}/spans

Authorization

AuthorizationBearer token (Anlyon API key) · headerrequired

Workspace API key sent as Authorization: Bearer <key>.

better-auth.session_tokenAPI key · cookierequired

Browser session used by dashboard-only operations.

Path parameters

runIdstringrequired

Public run id (run_xxx).

Header parameters

X-Request-Idstring

Optional caller correlation ID. Unsafe or oversized values are replaced.

max length 128

Idempotency-Keystring

Stable retry key for a mutation. The key is claimed atomically before the handler runs, so concurrent retries execute the side effect at most once. Replaying the key for the same request (same method, path, workspace and JSON body) returns the original response with an X-Idempotent-Replay: true header. Reusing the key for a different request returns 409 with error code idempotency_key_reuse. A duplicate arriving while the first is still in flight waits and then replays; if the first does not finish in time the duplicate gets 409 idempotency_request_in_progress. Keys are retained for 24 hours. Only successful (2xx) responses are stored; a failed request frees the key so it can be retried.

min length 1 · max length 255

Request body

requiredapplication/json

spansobject[]required

min items 1 · max items 500

Show properties

Array of object

idstring

Provide to make ingestion idempotent resending the same id updates the span in place.

max length 80

parentIdstring

max length 80

namestringrequired

min length 1 · max length 200

typeSpanType

Allowed:model_callcontext_assemblysession_readsession_writememory_recallmemory_writetool_callaction_callapproval_waitapproval_decisionworkflow_stepqueue_deliveryevent_deliverycustom

statusstring

Allowed:runningsucceededfailed

startedAtstring<date-time>required

endedAtstring<date-time>

modelstring

max length 120

providerstring

max length 120

tokensobject

Token counts, e.g. {input, output, total}. Rolled up to the run automatically: total wins when present, otherwise the values sum. Explicit run totals set at end-of-run override the rollup.

costnumber

Cost in USD as reported by the provider or gateway. Summed to the run total automatically.

min 0

inputany

outputany

errorobject

attributesobject

Responses

200

Spans ingested.

successbooleanrequired

Allowed:true

dataobjectrequired

Show properties

ingestedintegerrequired

400

Bad Request - Invalid input data

successbooleanrequired

requestIdstringrequired

Correlation ID matching the X-Request-Id response header.

errorobjectrequired

Show properties

codestring

messagestring

detailsobject

401

Unauthorized - Invalid or missing API key

successbooleanrequired

requestIdstringrequired

Correlation ID matching the X-Request-Id response header.

errorobjectrequired

Show properties

codestring

messagestring

detailsobject

403

Authenticated credential lacks the required scope or workspace access.

successbooleanrequired

requestIdstringrequired

Correlation ID matching the X-Request-Id response header.

errorobjectrequired

Show properties

codestring

messagestring

detailsobject

404

Not Found - Resource does not exist

successbooleanrequired

requestIdstringrequired

Correlation ID matching the X-Request-Id response header.

errorobjectrequired

Show properties

codestring

messagestring

detailsobject

Try it

Server

Base URLCustom base URLOverrides the selected server when set.

Authorization

Bearer token (Anlyon API key)Remember on this deviceInclude my values in samples

Parameters

X-Request-IdheaderOptional caller correlation ID. Unsafe or oversized values are replaced.runIdpath*Public run id (run_xxx).Idempotency-KeyheaderStable retry key for a mutation. The key is claimed atomically before the handler runs, so concurrent retries execute the side effect at most once. Replaying the key for the same request (same method, path, workspace and JSON body) returns the original response with an `X-Idempotent-Replay: true` header. Reusing the key for a different request returns `409` with error code `idempotency_key_reuse`. A duplicate arriving while the first is still in flight waits and then replays; if the first does not finish in time the duplicate gets `409 idempotency_request_in_progress`. Keys are retained for 24 hours. Only successful (2xx) responses are stored; a failed request frees the key so it can be retried.

Bodyapplication/json

Request body

Request

curl -X POST 'https://api.anlyon.com/api/v2/runs/string/spans' \
  -H 'Authorization: Bearer YOUR_TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
  "spans": [
    {
      "id": "string",
      "parentId": "string",
      "name": "string",
      "type": "model_call",
      "status": "running",
      "startedAt": "2019-08-24T14:15:22Z",
      "endedAt": "2019-08-24T14:15:22Z",
      "model": "string",
      "provider": "string",
      "tokens": {
        "property1": 0,
        "property2": 0
      },
      "cost": 0,
      "input": null,
      "output": null,
      "error": {},
      "attributes": {}
    }
  ]
}'

const response = await fetch("https://api.anlyon.com/api/v2/runs/string/spans", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_TOKEN",
    "Content-Type": "application/json"
  },
  body: "{\n  \"spans\": [\n    {\n      \"id\": \"string\",\n      \"parentId\": \"string\",\n      \"name\": \"string\",\n      \"type\": \"model_call\",\n      \"status\": \"running\",\n      \"startedAt\": \"2019-08-24T14:15:22Z\",\n      \"endedAt\": \"2019-08-24T14:15:22Z\",\n      \"model\": \"string\",\n      \"provider\": \"string\",\n      \"tokens\": {\n        \"property1\": 0,\n        \"property2\": 0\n      },\n      \"cost\": 0,\n      \"input\": null,\n      \"output\": null,\n      \"error\": {},\n      \"attributes\": {}\n    }\n  ]\n}"
});

import requests

response = requests.post(
    "https://api.anlyon.com/api/v2/runs/string/spans",
    headers={
        "Authorization": "Bearer YOUR_TOKEN",
        "Content-Type": "application/json"
    },
    data="{\n  \"spans\": [\n    {\n      \"id\": \"string\",\n      \"parentId\": \"string\",\n      \"name\": \"string\",\n      \"type\": \"model_call\",\n      \"status\": \"running\",\n      \"startedAt\": \"2019-08-24T14:15:22Z\",\n      \"endedAt\": \"2019-08-24T14:15:22Z\",\n      \"model\": \"string\",\n      \"provider\": \"string\",\n      \"tokens\": {\n        \"property1\": 0,\n        \"property2\": 0\n      },\n      \"cost\": 0,\n      \"input\": null,\n      \"output\": null,\n      \"error\": {},\n      \"attributes\": {}\n    }\n  ]\n}",
)

Response

{
  "success": true,
  "data": {
    "ingested": 0
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request data",
    "details": {
      "url": "Invalid URL format"
    }
  }
}

{
  "success": false,
  "error": {
    "code": "AUTHENTICATION_ERROR",
    "message": "Invalid or missing API key"
  }
}

{
  "success": false,
  "requestId": "req_0123456789abcdef0123456789abcdef",
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request data",
    "details": {}
  }
}

{
  "success": false,
  "error": {
    "code": "NOT_FOUND",
    "message": "Resource not found"
  }
}