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  "markdown": "Co-founder, Middesk, Inc..\n\nKyle Mack is co-founder and CEO of Middesk, a business identity platform for verifying and monitoring businesses, from Y Combinator's Winter 2019 batch. He announced the company's $57m Series B, co-led by Insight Partners and Canapi Ventures. His YC profile lists earlier roles at Checkr and AnyPerk.\n\n- LinkedIn: https://www.linkedin.com/in/kyle-mack-587bbb4b/\n\n## What Kyle builds\n\n- [Middesk](https://www.anchorterminal.com/tools/middesk.md), graded C, 59.1/100, in Identity \u0026 business verification. Business verification API from Middesk in San Francisco. It checks US and international businesses against registry, tax ID, sanctions and watchlist records, monitors them for changes, and files liens and state tax registrations, over REST and a hosted MCP server. Co-founder, Middesk, Inc., researched 2026-10-26.\n\n## Works with\n\n- [Kurt Ruppel](https://www.anchorterminal.com/people/kurt-ruppel/), Co-founder, Middesk, Inc.\n\n## Backed by\n\n- [Y Combinator](https://www.anchorterminal.com/investors/y-combinator/)\n- [Insight Partners](https://www.anchorterminal.com/investors/insight-partners/)\n- [Canapi Ventures](https://www.anchorterminal.com/investors/canapi-ventures/)\n- [Sequoia Capital](https://www.anchorterminal.com/investors/sequoia-capital/)\n- [Accel](https://www.anchorterminal.com/investors/accel/)\n- [Gaingels](https://www.anchorterminal.com/investors/gaingels/)\n\n## Questions\n\n### Who is Kyle Mack?\n\nKyle Mack is co-founder and CEO of Middesk, a business identity platform for verifying and monitoring businesses, from Y Combinator's Winter 2019 batch. He announced the company's $57m Series B, co-led by Insight Partners and Canapi Ventures. His YC profile lists earlier roles at Checkr and AnyPerk.\n\n### What does Middesk, Inc. make?\n\nAnchor Terminal lists Middesk from Middesk, Inc.. Business verification API from Middesk in San Francisco. It checks US and international businesses against registry, tax ID, sanctions and watchlist records, monitors them for changes, and files liens and state tax registrations, over REST and a hosted MCP server.\n\n### Who has invested in Middesk, Inc.?\n\nThe sources our research read name Y Combinator, Insight Partners, Canapi Ventures, Sequoia Capital, Accel and Gaingels.\n\n### How are Kyle's tools graded?\n\nMiddesk is graded C, 59.1 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://www.ycombinator.com/companies/middesk\n- https://www.middesk.com/\n- https://www.middesk.com/contact\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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