Twilio · api · fg-0083

People who text your Twilio number get a reply that says 'Accepted'

Sender gets a reply containing Accepted or another raw response body

Verified 2026-10-14 · Confirmed by 0 builders · Trust 50/100

Cause

Twilio treats the incoming-message webhook's response as TwiML. A webhook that answers with plain text, such as a workflow tool's default Accepted, sends that text back to the sender.

Fix

Respond to the webhook at once with an empty TwiML document and do the processing after that.

Apply

HTTP 200, Content-Type: text/xml, body: <?xml version="1.0" encoding="UTF-8"?><Response></Response>

Affects: Twilio Programmable Messaging webhooks, October 2026

Have your agent know this before it fails

claude mcp add --transport http footgun https://getfootgun.com/api/mcp