---
title: "Add outbound webhook signing secret"
method: POST
path: "/webhooks/{id}/secrets"
tags: ["Webhooks"]
---

# Add outbound webhook signing secret

`POST /webhooks/{id}/secrets`

Adds another active signing secret. Requests are signed once per active secret in the same signature header.

## Path parameters

- `id` string, required

## Response `200`

Secret added

- object
  - `success` boolean
  - `webhook` OutboundWebhookEndpoint
    - `id` string
    - `name` string
    - `url` string, uri
    - `status` 'enabled' | 'disabled'
    - `events` OutboundWebhookEventType[]
    - `consecutiveFailures` integer — Consecutive failed delivery attempts used for endpoint backoff.
    - `circuitOpenedAt` string, date-time, nullable
    - `circuitOpenUntil` string, date-time, nullable
    - `signingSecret` string — Returned only when creating a webhook or adding a signing secret.
    - `signingSecrets` object[] — Active signing secret metadata. Secret values are returned only once.
      - `id` string
      - `prefix` string
      - `createdAt` string, date-time
    - `lastSuccessAt` string, date-time, nullable
    - `lastFailureAt` string, date-time, nullable
    - `createdAt` string, date-time
    - `updatedAt` string, date-time

## Other responses

- `401` — Unauthorized
- `404` — Webhook not found

## Changes

> 121 revisions in range; 12 could not be searched.

- **2026-08-02** `36f92fc0caa2` — 2 breaking, 1 warning
  - the response property `success` became optional for the status `401`
  - the response property `success` became optional for the status `404`
  - added the new `subscriber.created` enum value to the `webhook/events/items/` response property for the response status `200`
- **2026-07-25** `b58891ac1cde` — 1 warning
  - added the new `email.failed` enum value to the `webhook/events/items/` response property for the response status `200`
- **2026-07-15** `8bc13491b9f6` — 2 warning
  - added the new `subscriber.list_subscribed` enum value to the `webhook/events/items/` response property for the response status `200`
  - added the new `subscriber.list_unsubscribed` enum value to the `webhook/events/items/` response property for the response status `200`
- **2026-07-14** `83e7fd773745` — 1 warning
  - added the new `poll.answered` enum value to the `webhook/events/items/` response property for the response status `200`
- …earlier changes not shown

[Full history](https://skmtc.dev/sequenzy/apis/sequenzy-api/changes/webhooks/:id/secrets/post.md)

---

[API](https://skmtc.dev/sequenzy/apis/sequenzy-api.md) · [All operations](https://skmtc.dev/sequenzy/apis/sequenzy-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/sequenzy/sequenzy-api/revisions/73f826277d9a/schema)