Webhook for new replies isn't posting to my Slack channel — Support

David B. 74 days ago

Set up a webhook to post new replies into a Slack channel via an incoming webhook URL. Nothing's showing up in Slack even though replies are coming in fine on our end.

Carol Wright Staff 74 days ago

Can you check Settings > API & Webhooks > Delivery Log for that webhook? It'll show every attempt along with the HTTP status code Slack returned. If it shows a non-200 response, that tells us where to look — Slack incoming webhooks are picky about payload format (they expect a specific JSON shape with a text field at minimum).

David B. 74 days ago

Log shows a bunch of 400 responses. So probably a payload format issue like you said.

Carol Wright Staff 74 days ago

Yep — our default webhook payload is our own event schema, not pre-formatted for Slack's expected structure. You'll need a small transform step in between (Zapier or a lightweight serverless function works well) that reshapes our payload into a plain {"text": "..."} body before forwarding to the Slack incoming webhook URL. Posting straight from our webhook to Slack's URL without that transform is what's causing the 400s.