webhooks.xyz

Examples / Project management and productivity / Trello

Trello webhooks

Actions on a board, list or card: created, moved, commented, member added.

Events

  • createCard
  • updateCard
  • commentCard
  • addMemberToCard

Signature

Header x-trello-webhook: HMAC-SHA1 of '<raw body><callback URL>' with the API secret, base64 encoded.

āœ“ A bin checks Trello signatures: add the API secret under Signature verification (Trello).

Retries

Trello retries with increasing gaps and deletes the webhook after about 30 days of failures. Trello sends a HEAD request when you create the webhook.

See a retry schedule in the calculator.

Docs

developer.atlassian.com/cloud/trello/guides/rest-api/webhooks/

Checked 2026-10-08. Report a change.

Sample request from Trelloillustrative, shortened
Content-Typeapplication/jsonx-trello-webhookRSOYDt4T1cUTdK1PDd93/VVr8B8= 
{
  "action": {
    "id": "66f3c1b2d4e5f60718293a4b",
    "type": "updateCard",
    "date": "2026-10-08T06:34:00.000Z",
    "memberCreator": { "username": "ravi" },
    "data": {
      "card": { "id": "5f1dā€¦", "name": "Retry webhook deliveries" },
      "listAfter": { "name": "Done" },
      "listBefore": { "name": "In progress" }
    }
  },
  "model": { "id": "5f1cā€¦", "name": "Engineering" }
}

Receive Trello webhooks with webhooks.xyz

Create a bin. Paste its URL into Trello. Each request shows at once with its headers and body. Add your server as a destination, and deliveries retry when it is down. Request an invite.

More in project management and productivity: Asana, monday.com, Notion.