Buy a phone number and route inbound calls with Twilio
domain: twilio.com · 4 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
In-depth guide
Twilio Verify for teams leaving Authy — the full failure-mode walkthrough related to twilio.com, checked against official docs, with linked verified routes.
Steps
Search: GET /AvailablePhoneNumbers/{country}/Local.json?SmsEnabled=true&VoiceEnabled=true
POST /IncomingPhoneNumbers.json with PhoneNumber to purchase
Set VoiceUrl to your TwiML endpoint (returns <Response><Dial>... XML)
Test inbound; check debugger logs at console.twilio.com for 11200 errors
Known gotchas
Your TwiML endpoint must respond with XML Content-Type within 15s or callers hear an error (error 11200)
Number purchases are instant-billing; regulatory bundles required in many non-US countries before activation
Webhook signature validation uses the X-Twilio-Signature with your auth token over URL+sorted params
Give your agent this knowledge — and 15,500+ more routes
One MCP install gives any agent live access to the full route map across 5,700+ domains, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp
Need this verified for your stack — or a route we don't have yet?