Get Slack preview
Get a Slack unfurl preview image via redirect to a fresh signed URL. Falls back to a placeholder image if the preview is not found.
Authentication: personal access token. The spec defines an api_key security
scheme — send an Authorization: ApiKey <your-personal-access-token> header
(value format: ApiKey <your key>). A session_cookie scheme (connect.sid)
exists for browser sessions. Operations in this spec declare security: [], an
artifact of the upstream spec generator — authentication is still enforced by the
server.
Path parameters
| Name | Type | Required | Description |
|---|---|---|---|
id | string | Yes |
Responses
302 — Redirect
default — Error
{
"error": {
"data": "string",
"message": "string",
"name": "string",
"statusCode": 0
},
"status": "error"
}Get Slack image
Get a Slack image by nanoId
Get Slack card image
Get a Slack AI agent card image. Falls back to a placeholder image if the image is not found. Intentionally public (no auth): Slack's unfurl bot fetches preview images without user credentials. Access is guarded by an unguessable 21-char nanoid (only minted server-side and shared with Slack during the unfurl of a resource the user already has access to), strict `{id}` validation, and no-store / noindex response headers.