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  "markdown": "Co-founder, Coinbase.\n\nFred Ehrsam co-founded Coinbase after working as a trader at Goldman Sachs. He later co-founded a crypto-focused venture capital firm, where he is a general partner, and is co-founder and CEO of Nudge, a neurotechnology startup working on non-invasive brain-computer interfaces.\n\n## What Fred builds\n\n- [x402](https://www.anchorterminal.com/tools/x402.md), graded A, 80/100, in Pay-per-call protocols. Protocol for per-request stablecoin payments using HTTP 402. Co-founder, Coinbase, researched 2026-10-28.\n\n## Works with\n\n- [Brian Armstrong](https://www.anchorterminal.com/people/brian-armstrong/), Co-founder and CEO, Coinbase\n- [Erik Reppel](https://www.anchorterminal.com/people/erik-reppel/), Co-author of the x402 whitepaper; TSC Chair, x402 Foundation\n\n## Questions\n\n### Who is Fred Ehrsam?\n\nFred Ehrsam co-founded Coinbase after working as a trader at Goldman Sachs. He later co-founded a crypto-focused venture capital firm, where he is a general partner, and is co-founder and CEO of Nudge, a neurotechnology startup working on non-invasive brain-computer interfaces.\n\n### What does x402 Foundation (Linux Foundation) make?\n\nAnchor Terminal lists x402 from x402 Foundation (Linux Foundation). Protocol for per-request stablecoin payments using HTTP 402.\n\n### How are Fred's tools graded?\n\nx402 is graded A, 80 out of 100, on Anchor Terminal's benchmark, which scores every listing against the same checklist.\n\n## Sources\n\n- https://x402.org/\n- https://x402.org/contact/\n- https://x402.org/linux-foundation-announces-operational-launch-of-x402-foundation-to-standardize-internet-native-payments-for-ai-agents-and-applications/\n- https://x402.org/leadership/\n- https://x402.org/x402-whitepaper.pdf\n- https://en.wikipedia.org/wiki/Coinbase\n- https://www.ycombinator.com/companies/coinbase\n- https://en.wikipedia.org/wiki/Brian_Armstrong_(businessman)\n- https://en.wikipedia.org/wiki/Fred_Ehrsam\n\nNot the same person as [Fred Ehrsam](https://www.anchorterminal.com/people/fred-ehrsam/) (Coinbase Developer Platform, Coinbase, Inc.), as far as the research can tell.\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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