Modifying Responses for Slack Events API Webhooks

Isaac S. · 2025-04-21 16:13:58.656987+00

Hello, is it possible to modify what's sent back from receiving a webhook? I'm trying connect it with a Slack App, specifically the Events API. and it needs to respond to webhooks in a particular way "We’ll send HTTP POST requests to this URL when events occur. As soon as you enter a URL, we’ll send a request with a challenge parameter, and your endpoint must respond with the challenge value. Learn more. (https://api.slack.com/events/url_verification)"

Currently, our webhook functionality doesn't support modifying the response to return a specific "challenge" value as required by the Slack Events API. Our webhooks are primarily designed to receive data rather than respond with custom payloads. To integrate with Slack's Events API, you might need to set up an intermediary server that can handle the challenge response before forwarding the data to Clay. This server could respond to Slack's challenge and then send the event data to Clay using our webhook URL. Is there a specific reason you're trying to integrate Clay directly with Slack's Events API? Understanding your use case might help us suggest alternative approaches or potential workarounds.

Sources: Webhook source guide | Documentation | Clay University Webhook source guide | Documentation | Clay University

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