Update a topic

PATCH/v1/topics/{id}

Rename it, change its description or its default.

Required scope: contacts:manage

Parameters

Name	In	Description
`id`required	path	The topic id.

Request body

Field	Type
`name`optional	`string`
`description`optional	`any`
`default_subscription`optional	`"opt_in" \| "opt_out"`

Unknown fields are rejected, so a typo never silently does nothing.

Example

curl -X PATCH 'https://api.sendsend.email/v1/topics/ID' \
  -H "Authorization: Bearer $SENDSEND_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
  "description": "Releases and tips"
}'

Response `200`

{
  "id": "top_Xa9…",
  "object": "topic",
  "name": "Product news",
  "description": "Releases and tips",
  "default_subscription": "opt_in",
  "created_at": "2026-10-06T15:00:00.000Z"
}

Errors

Status	Code	When
400	`validation_error`	The request body or parameters are invalid. The message says which field.
404	`not_found`	No such resource in this project.
401	`unauthorized`	The API key is missing, invalid or revoked.
403	`forbidden`	The key does not have the scope this endpoint needs.

Every error has the same shape. See Errors.