---
title: "Rotate an application's widget client_secret (new secret returned once)"
method: POST
path: "/applications/{id}/client-secret:rotate"
tags: ["Applications"]
---

# Rotate an application's widget client_secret (new secret returned once)

`POST /applications/{id}/client-secret:rotate`

## Request

- Base URL: `https://api.customdomain.ai/v1`
- URL: `https://api.customdomain.ai/v1/applications/{id}/client-secret:rotate`
- Auth: one of:
  - HTTP bearer
  - HTTP bearer

Mints a fresh client_secret, stores only its hash, and returns the plaintext exactly once; it is never retrievable again. The old secret stops minting widget tokens (POST /tokens) immediately; already-issued widget JWTs run out their own short TTL. Admin-or-above (keys:manage): a member/viewer API key is rejected with 403.

## Path parameters

- `id` string, required

## Response `200`

Rotated; the new client_secret is present only in this response

- object
  - `application_id` string, required
  - `client_secret` string, required: sk_… (mints widget JWTs; shown once, stored hashed)

## Other responses

- `401`: Error envelope: {code, title, details}.
- `402`: Refused because of the workspace's billing. `billing_required`: the workspace has no active or trialing subscription (a new workspace that has not started its trial, a Free workspace past its grace period, a comp that ended, or a subscription Stripe marked unpaid or canceled). It stops a new connection, the start of a domain purchase and the first live credential (an application, an API key or a rotated client secret). Domains already connected keep working, and an owner or admin sets up billing in the console; `details` says where. A new workspace's first domain is the exception: while it has fewer pending, propagating or live connections than its free domains (ten, unless an operator set another number: `free_domains`), a connect and the start of a purchase go through (`first_domain_free`), and the next one is refused with a `title` saying a card is needed to connect more domains. Credentials still need the trial. `quota_exceeded` (connections only): a plan that is refused past its quota (Starter, and the retired Free) is at it and the deployment enforces quotas. `connections_unavailable`: what a connect-scoped widget token, the tenant's own end user, gets instead of either, with neutral wording, so the tenant's customers are never told about the tenant's billing. A delegated agent token gets the full wording, and `GET /billing/standing` tells it beforehand whether a new connection would be refused.
- `403`: Error envelope: {code, title, details}.
- `404`: Error envelope: {code, title, details}.

---

[API](https://skmtc.dev/customdomain/apis/customdomain-control-plane-api.md) · [All operations](https://skmtc.dev/customdomain/apis/customdomain-control-plane-api/llms.txt) · [OpenAPI document](https://skmtc.dev/customdomain/apis/customdomain-control-plane-api/revisions/34d89cb7a7cd?raw)