---
title: "Send test usage webhook event"
method: POST
path: "/usage/v1/subscriptions/{subscriptionId}/test"
tags: ["Usage"]
---

# Send test usage webhook event

`POST /usage/v1/subscriptions/{subscriptionId}/test`

Delivers a test event to a single usage webhook subscription using the same payload shape and signing behavior as production delivery.

## Path parameters

- `subscriptionId` string, required

## Request body

- object
  - `eventType` string
  - `payload` object

## Response `200`

Test event attempted

## Other responses

- `400` — Invalid request
- `401` — Invalid API key or session
- `403` — Insufficient permissions
- `404` — Subscription not found

## Changes

- **2026-04-07** `fc3c7986659d` — 1 info
  - endpoint added

[Change history](https://skmtc.dev/casemark/apis/case-dev-api/changes/usage/v1/subscriptions/:subscriptionId/test/post.md)

---

[API](https://skmtc.dev/casemark/apis/case-dev-api.md) · [All operations](https://skmtc.dev/casemark/apis/case-dev-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/casemark/case-dev-api/revisions/5b7e64e6d6f9/schema)