List webhook delivery attempts

GET /v1/developer/webhook-subscriptions/{subscriptionId}/deliveries

Operation ID: listDeveloperWebhookDeliveries

Lists delivery status for currently granted event families on this destination. Includes attempts and response codes, not response bodies, secrets or event payloads. Default limit 25, maximum 100. Use the event API to read the canonical envelope. Server credentials only. Application, installation, collection, and TEST/LIVE scope are resolved from the credential. Legacy collection webhook destinations are separate. TEST and LIVE events are isolated; neither event grants charging, booking or marketing authority.

Contract status

Field	Value
Maturity	`beta`
Required capability	`webhooks.read`
Freshness class	`authenticated-state`
Quota cost	`1`

All operations require a Kismet Developer Bearer credential. Collection and resource authority is resolved from the credential’s installation grants; identifiers in the URL never grant access.

Request parameters

Name	In	Type	Required
`limit`	query	integer	no
`after`	query	string	no
`subscriptionId`	path	string	yes

Request body

This operation has no JSON request body.

cURL

Set KISMET_API_ORIGIN=https://api.ksmt.app and configure KISMET_DEVELOPER_API_KEY in your environment. Run server-credential requests from your backend, not browser code.

curl --request GET \
  "$KISMET_API_ORIGIN/v1/developer/webhook-subscriptions/{subscriptionId}/deliveries" \
  --header "Authorization: Bearer $KISMET_DEVELOPER_API_KEY" \
  --header "Accept: application/json"

Responses

Status	Meaning
200	Success.
400	Invalid request parameters or body.
401	Missing, invalid, expired, or inappropriate credential/session.
403	Credential lacks the required grant/capability, or an origin/CSRF check failed.
404	The authorized resource was not found.
409	Request conflicts with the installation environment or current state.
429	Rate limit or quota exceeded; inspect response metadata before retrying.
503	A required Kismet dependency is temporarily unavailable.

200 response example

{
  "data": [
    {
      "id": "88888888-8888-4888-8888-888888888888",
      "eventId": "evt_11111111-1111-4111-8111-111111111111",
      "status": "SUCCEEDED",
      "attempts": 1,
      "responseCode": 204,
      "createdAt": "2026-09-23T12:00:01.000Z",
      "deliveredAt": "2026-09-23T12:00:02.000Z",
      "nextRetryAt": null
    }
  ],
  "nextCursor": null
}

200 response schema

Content type: application/json. Required fields, nullable values, and nested structures are defined below.

View complete response schema

{
  "type": "object",
  "properties": {
    "data": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string",
            "format": "uuid"
          },
          "eventId": {
            "type": "string"
          },
          "status": {
            "type": "string",
            "enum": [
              "PENDING",
              "SENDING",
              "SUCCEEDED",
              "FAILED",
              "DEAD"
            ]
          },
          "attempts": {
            "type": "integer"
          },
          "responseCode": {
            "type": "integer",
            "nullable": true
          },
          "createdAt": {
            "type": "string",
            "format": "date-time"
          },
          "deliveredAt": {
            "type": "string",
            "format": "date-time",
            "nullable": true
          },
          "nextRetryAt": {
            "type": "string",
            "format": "date-time",
            "nullable": true
          }
        },
        "required": [
          "id",
          "eventId",
          "status",
          "attempts",
          "responseCode",
          "createdAt",
          "deliveredAt",
          "nextRetryAt"
        ],
        "additionalProperties": false
      }
    },
    "nextCursor": {
      "type": "string",
      "nullable": true
    }
  },
  "required": [
    "data",
    "nextCursor"
  ],
  "additionalProperties": false
}