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  "markdown": "Co-founder, Twilio.\n\n## What John builds\n\n- [Twilio API + MCP](https://www.anchorterminal.com/tools/twilio.md), graded BB, 77.4/100, in Messaging APIs. Programmable Messaging (SMS, MMS, WhatsApp, RCS) and Verify over REST. Co-founder, Twilio, researched 2026-10-26.\n- [Twilio Programmable Voice API + MCP](https://www.anchorterminal.com/tools/twilio-voice.md), graded BB, 77.4/100, in Phone calling \u0026 voice transport. Programmable Voice for placing and answering calls on Twilio numbers in 100+ countries, controlled with TwiML or REST. Co-founder, Twilio, researched 2026-10-26.\n\n## Works with\n\n- [Evan Cooke](https://www.anchorterminal.com/people/evan-cooke/), Co-founder, Twilio\n- [Jeff Lawson](https://www.anchorterminal.com/people/jeff-lawson/), Co-founder, Twilio\n- [Sandy Sage](https://www.anchorterminal.com/people/sandy-sage/), Platform product leader; Twilio email strategy\n\n## Questions\n\n### Who is John Wolthuis?\n\nJohn Wolthuis is co-founder of Twilio.\n\n### What does Twilio make?\n\nAnchor Terminal lists Twilio API + MCP and Twilio Programmable Voice API + MCP from Twilio. Programmable Messaging (SMS, MMS, WhatsApp, RCS) and Verify over REST.\n\n### How are John's tools graded?\n\nTwilio API + MCP is graded BB, 77.4 out of 100; Twilio Programmable Voice API + MCP is graded BB, 77.4 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://www.usv.com/portfolio/company/twilio\n- https://www.twilio.com/en-us\n- https://www.twilio.com/en-us/company\n\nThese are the people building the tools we list, named for their public role in the company or project behind a listing, from public pages, with the date it was researched. They don't work for Anchor Terminal (our own team is on the about page, /about/#author). We show public roles, public profiles and what the listing pages show, nothing private. To correct something, send an about or a photo, or have a page removed, write to privacy@anchorterminal.com.\n",
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