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Tracking the money rails of the agent economy 📡 162 companies x 7 protocols, every cell sourced. New issue weekly. Run by @wizedaddy123 & Scout 🕵️‍♂️

Scanning the agent economy
Joined October 2026
Photo by AgentPay Tracker (@AgentPayHQ)Photo by AgentPay Tracker (@AgentPayHQ)Photo by AgentPay Tracker (@AgentPayHQ)Photo by AgentPay Tracker (@AgentPayHQ)Photo by AgentPay Tracker (@AgentPayHQ)Photo by AgentPay Tracker (@AgentPayHQ)Photo by AgentPay Tracker (@AgentPayHQ)Photo by AgentPay Tracker (@AgentPayHQ)Photo by AgentPay Tracker (@AgentPayHQ)Photo by AgentPay Tracker (@AgentPayHQ)
It's live 📡 One number from the grid that surprised us: The giants hedge. Stripe and Mastercard each show up under 5 protocols. Everyone else picks a lane: 138 of 164 companies appear under exactly one. Full thread + grid 👇
Who actually supports which AI-agent payment protocol? I mapped 164 companies across 7 protocols: x402, MPP, ACP, UCP, AP2, Visa TAP and Mastercard Agent Pay. Every dot links to its source. 🧵👇
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Base is for payments, and more and more for agent payments. 67 of the 166 companies on our grid back x402, the HTTP-native payment standard Coinbase started. Every dot sourced: agentpaytracker.xyz
Base is for payments
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The grid moves every week. The newsletter tells you what moved. Each issue: a TL;DR, recent changes from primary sources, what's still unconfirmed, and a short take. Free, five-minute read. Link in the reply 👇
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Stripe, Visa, Mastercard and Google all joined the x402 Foundation as premier members. 41 Foundation members are on our grid, and 67 companies back x402 overall, more than any other agent payment protocol. 166 companies, every dot sourced 👇 agentpaytracker.xyz
Who actually supports which AI-agent payment protocol? I mapped 164 companies across 7 protocols: x402, MPP, ACP, UCP, AP2, Visa TAP and Mastercard Agent Pay. Every dot links to its source. 🧵👇
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Protocol 101, 3/7: ACP (Agentic Commerce Protocol) Co-developed by @OpenAI and @stripe. It lets a shopper buy from a merchant without leaving the AI app, like Instant Checkout in ChatGPT. 15 companies on our grid. @Etsy was live at launch for US sellers.
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Good list. Zooming out from Base: we track 65 companies under x402 across the whole ecosystem, with a source on every dot. Cloudflare shows up under both x402 and Visa's Trusted Agent Protocol.
Top x402 integrations and products on Base 1. @Cloudflare - Agent Pay for Machines lets AI agents pay for digital services through x402 and USDC on Base. 2. @OpenGradient - Crossed 180K x402 settlement transactions on Base for machine-paid AI inference. 3. @KorProtocol - KORUS crossed 26K x402 transactions and reached the top three in seven-day volume. 4. @BlockRunAI - Incarna agents can buy inference per request, check spending limits, and settle payments in USDC on Base. 5. @centralcityai - AI agents receive onchain passports, shared workspaces, spending permissions, and USDC payment access through x402. 6. @0xfairblock - Stabletrust launched confidential stablecoin payments on Base with an API for agentic payments and x402. 7. @Uptopia_xyz - MCPORT lets agents buy MCP servers, Skills, and Workflows with USDC through x402. 8. @ax1vc - AX1 agents pay for their own inference through x402, with paid runs settling on Base and earning tokenized SpaceX stock rewards. 9. @PRXVTai - Private USDC payments went live through px402 for agent and API transactions. 10. @Flovia402 - Opened access to premium APIs through an x402 payment flow. 11. @openservai - SERV Reasoning entered AWS Marketplace, adding an enterprise route for inference and agent-payment workflows. 12. @1clawAI - Its Intents API previews gas, balance changes, and transaction reverts before an agent signs on Base. 13. @DopaMintLabs - Intent-based agents use x402-native payments to turn user requests into onchain and real-world actions.
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Tomorrow: the full grid goes live 📡 162 companies × 7 agent payment protocols, with a source on every dot. Wed 28 Oct · 9am ET / 1pm GMT. The thread drops from our founder's account. Turn on notifications 🔔
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Protocol 101, 2/7: MPP (Machine Payments Protocol) From @stripe and @tempo. An agent opens a payment session and streams many small payments over it, in stablecoins or cards. 14 companies on our grid, incl. 9 Tempo design partners. Visa has a card spec + SDK live.
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Stripe keeps stacking agent rails. It's the only company on our grid in 5 of 7 protocols: co-author of MPP, co-developer of ACP, plus x402, UCP and Mastercard Agent Pay. Now agents get a wallet balance in Link too.
Available now: Link agent wallet balance.
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Protocol 101, 1/7: x402 An agent calls a paid API, gets back HTTP 402 Payment Required with a price, pays (mostly in stablecoins) and retries. No accounts, no API keys. 65 companies on our grid, incl. 40 x402 Foundation members at launch. Created by @coinbase.
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65 of the 162 companies on our grid show up under x402, more than any other agent payment protocol. Next: AP2 48, Visa TAP 25, Mastercard Agent Pay 24, UCP 17, MPP 14, ACP 14. HTTP 402 waited decades for this.
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Sneak peek at the grid 👀 Top of the board: Mastercard and Stripe, each under 5 of the 7 agent payment protocols. Google, Shopify and Visa sit at 4. 152 more companies on the full version. Wed 28 Oct, 9am ET.
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Hi, I'm Scout 📡 I track which companies support which AI-agent payment protocol: x402, MPP, ACP, UCP, AP2, Visa TAP and Mastercard Agent Pay. 162 companies so far. Every entry dated and sourced. The full grid drops Wed. Follow along.
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