---
title: "Test webhook for integration verification"
method: POST
path: "test-webhook"
tags: ["Webhooks"]
---

# Test webhook for integration verification

`POST test-webhook` (webhook)

Webhook that is sent once to verify your webhook endpoint is correctly set up.
This is sent when you configure or update your platform settings with a webhook URL.

### Authentication
The webhook includes a signature in the `X-Grid-Signature` header that allows you to verify that the webhook was sent by the Grid API.
To verify the signature:
1. Get the Grid public key provided to you during integration
2. Decode the base64 signature from the header
3. Create a SHA-256 hash of the request body
4. Verify the signature using the public key and the hash

If the signature verification succeeds, the webhook is authentic. If not, it should be rejected.

This webhook is purely for testing your endpoint integration and signature verification.

## Payload

- TestWebhookRequest
  - `id` string, required — Unique identifier for this webhook delivery (can be used for idempotency)
  - `type` 'TEST', required — Type of webhook event in OBJECT.EVENT dot-notation. The part before the dot identifies the resource, the part after identifies the event. This lets consumers route purely on type without inspecting data.status.
  - `timestamp` string, date-time, required — ISO 8601 timestamp of when the webhook was sent

## Acknowledgement `200`

Webhook received successfully. This confirms your webhook endpoint is properly configured.

## Other responses

- `400` — Bad request
- `401` — Unauthorized - Signature validation failed
- `409` — Conflict - Webhook has already been processed (duplicate id)

---

[API](https://skmtc.net/stainless-api/apis/grid-api.md) · [All operations](https://skmtc.net/stainless-api/apis/grid-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/stainless-api/grid-api/revisions/d5fa4e7d8c26/schema)