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  "markdown": "Co-founder, American Express.\n\nJohn Butterfield co-founded American Express in 1850 by consolidating his Butterfield, Wasson \u0026 Company with the express firms of Henry Wells and William G. Fargo. He later ran the Butterfield Overland Mail Company, a stagecoach line that operated from 1858 to 1861.\n\n## What John builds\n\n- [American Express Agentic Commerce Experiences (ACE)](https://www.anchorterminal.com/tools/amex-ace.md), graded F, 25.8/100, in Agent checkout protocols. American Express's Agentic Commerce Experiences (ACE) developer kit lets verified AI agents pay with scoped, tokenised Amex card credentials against a purchase intent the Card Member approves. Access needs an application and agreements with American Express. Co-founder, American Express, researched 2026-10-28.\n\n## Works with\n\n- [Henry Wells](https://www.anchorterminal.com/people/henry-wells/), Co-founder, American Express\n- [Matthew Robinson](https://www.anchorterminal.com/people/matthew-robinson/), EVP, payment-network product leadership\n- [William G. Fargo](https://www.anchorterminal.com/people/william-g-fargo/), Co-founder, American Express\n\n## Questions\n\n### Who is John Butterfield?\n\nJohn Butterfield co-founded American Express in 1850 by consolidating his Butterfield, Wasson \u0026 Company with the express firms of Henry Wells and William G. Fargo. He later ran the Butterfield Overland Mail Company, a stagecoach line that operated from 1858 to 1861.\n\n### What does American Express make?\n\nAnchor Terminal lists American Express Agentic Commerce Experiences (ACE) from American Express. American Express's Agentic Commerce Experiences (ACE) developer kit lets verified AI agents pay with scoped, tokenised Amex card credentials against a purchase intent the Card Member approves. Access needs an application and agreements with American Express.\n\n### How are John's tools graded?\n\nAmerican Express Agentic Commerce Experiences (ACE) is graded F, 25.8 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://www.americanexpress.io/shaping-the-future-of-agentic-commerce/\n- https://www.linkedin.com/in/matthewrobinson-amex\n- https://www.americanexpress.com/en-gb/\n- https://www.americanexpress.com/en-us/newsroom/articles/innovation/what-sets-american-express-apart-in-the-age-of-agentic-commerce.html/\n- https://developer.americanexpress.com/products/nextgen-agentic-payments/overview\n- https://developer.americanexpress.com/support\n- https://www.americanexpress.com/uk/contact-us/?inav=en_gb_footer_company_information_contact_us\n- https://en.wikipedia.org/wiki/American_Express\n- https://en.wikipedia.org/wiki/Henry_Wells\n- https://en.wikipedia.org/wiki/William_Fargo\n- https://en.wikipedia.org/wiki/John_Butterfield_(businessman)\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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