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  "markdown": "CEO.\n\n- LinkedIn: https://www.linkedin.com/in/dcasem/\n\n## What David builds\n\n- [Telnyx API + MCP](https://www.anchorterminal.com/tools/telnyx.md), graded BB, 73.7/100, in Messaging APIs. Carrier-owned CPaaS with SMS, MMS, RCS and WhatsApp on one REST API, plus an official hosted MCP server at api.telnyx.com/v2/mcp and a stdio MCP package. CEO, researched 2026-10-26.\n- [Telnyx Voice API + MCP](https://www.anchorterminal.com/tools/telnyx-voice.md), graded BB, 74.3/100, in Phone calling \u0026 voice transport. Carrier-owned Voice API (Call Control and TeXML) for calls, numbers, websocket media streaming, recording and transfers on Telnyx's own network. CEO, researched 2026-10-26.\n\n## Backed by\n\n- [Techstars](https://www.anchorterminal.com/investors/techstars/)\n- [Pritzker Group Venture Capital](https://www.anchorterminal.com/investors/pritzker-group-venture-capital/)\n- [Chicago Ventures](https://www.anchorterminal.com/investors/chicago-ventures/)\n- [Corazon Capital](https://www.anchorterminal.com/investors/corazon-capital/)\n- [Math Venture Partners](https://www.anchorterminal.com/investors/math-venture-partners/)\n- [Mike Gamson](https://www.anchorterminal.com/investors/mike-gamson/)\n\n## Questions\n\n### Who is David Casem?\n\nDavid Casem is CEO.\n\n### What does Telnyx make?\n\nAnchor Terminal lists Telnyx API + MCP and Telnyx Voice API + MCP from Telnyx. Carrier-owned CPaaS with SMS, MMS, RCS and WhatsApp on one REST API, plus an official hosted MCP server at api.telnyx.com/v2/mcp and a stdio MCP package.\n\n### Who has invested in Telnyx?\n\nThe sources our research read name Techstars, Pritzker Group Venture Capital, Chicago Ventures, Corazon Capital, Math Venture Partners and Mike Gamson.\n\n### How are David's tools graded?\n\nTelnyx API + MCP is graded BB, 73.7 out of 100; Telnyx Voice API + MCP is graded BB, 74.3 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://www.linkedin.com/in/dcasem/\n- https://telnyx.com/\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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