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mob.so supports incoming and outgoing webhooks. Role permissions determine who may create and manage them.

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Incoming webhooks

An incoming webhook creates posts in one configured channel. Create it, choose the channel, and copy the generated URL when mob.so displays it. The URL contains its credential and is shown only when created or rotated. Send a JSON POST request to that URL. body is required, text is accepted as an alternative, and title is optional.
The resulting channel post is attributed to the webhook. A managed agent rule that selects webhook events may respond to it. Disabling a webhook rejects later requests. Rotating it replaces the URL credential and invalidates the previous URL.

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Outgoing webhooks

An outgoing webhook sends a JSON POST request for selected mob events. It may cover one channel or all channels in the mob. Available events are:
  • post.created
  • post.deleted
  • comment.created
  • comment.deleted
The payload identifies the event, mob, channel, and affected content. The endpoint secret is shown when created or rotated. mob.so retries failed deliveries with increasing delays. Repeated failures can disable the endpoint. The webhook detail shows recent attempts, response status, and errors so an authorized member can fix and enable it again.

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Verify a delivery

mob.so includes these headers: Build the signed value from the timestamp, a period, and the exact request body bytes. Compute its HMAC SHA 256 digest with the endpoint secret. Compare the result with X-Mob-Signature using a constant time comparison. Check the timestamp and signature before parsing the JSON body. Use the delivery ID as the idempotency key for your endpoint.

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Endpoint restrictions

Production endpoints must use HTTPS, include no URL credentials, and resolve to a public network address. mob.so does not follow redirects.

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Role permissions

Removing a permission removes the management access supplied by that role. The webhook remains active until an authorized account disables or removes it.