Every member, every shipped integration, every spec proposal, every real-world transaction we can verify. Updated on a rolling basis. The canonical list, because nobody else is keeping one.
Last updated June 10, 2026We update when material changes land. See the changelog.
The x402 protocol is moving fast enough that by the time press releases reach the news feeds, the state of the world has already shifted. This page is our attempt to keep a single reference that reflects what is actually true today, not what was announced three weeks ago. It is a companion to our full x402 reference piece, which explains what the protocol is and why it matters. This page is for the question that reference piece does not answer: who is actually building on it.
Confirmed members of the x402 Foundation. A member appears here only when the membership is verifiable against a primary source.
| Member | Category | Joined | Notes | Source |
|---|---|---|---|---|
| Fireblocks | Crypto infrastructure / wallet platform | May 20, 2026 | First member addition after the founding cohort. Joined alongside the launch of its Agentic Payments Suite. | Source |
Live means verified running in production, not an announcement. Announced means a public commitment with no shipped product yet.
| Company | Product | What it does | Status | Source |
|---|---|---|---|---|
| Nevermined | Agent payment flow | Ties x402 to Visa Intelligent Commerce with VGS tokenization for agent-originated card payments. | Live April 17, 2026 | MM coverage |
| Bankr | x402 Cloud | Hosted infrastructure for x402-enabled APIs and agent-originated payments. Launched on 4/02 day alongside the Linux Foundation transfer. | Live April 2, 2026 | Chainwire announcement |
| Cloudflare | Native x402 transaction support | Cloudflare Workers can now serve and accept x402 payments natively. | Live April 2, 2026 | Cloudflare blog |
| Independent data marketplace operators | Several | Agent-accessible data APIs with 402 gating, stablecoin settlement on L2. | Live, small volume | Operator-reported |
| Amazon Web Services | Bedrock AgentCore Payments | Native x402 payment execution for Bedrock agents: managed wallet provisioning, policy-based per-agent and per-session spending limits, audit trails tied to agent reasoning traces. When an agent hits an HTTP 402, AgentCore evaluates the terms, authorizes the USDC micropayment, and resubmits the request. | Live, in preview May 7, 2026 | AWS Industries blog |
| Arbitrum | x402 on Arbitrum | x402 settlement live on Arbitrum: agents pay for APIs, services, and software directly with stablecoins. | Live May 15, 2026 | Arbitrum via X (secondary report) |
| Fireblocks | Agentic Payments Suite | Agentic Payments Gateway gives payment service providers stablecoin merchant acceptance; Agentic Wallets let users delegate transactions to agents within defined limits. Agora's AUSD stablecoin is already running on the stack. | Live May 20, 2026 | PR Newswire |
| Casper Network | Casper AI Toolkit | Production x402 facilitator on mainnet, the first WebAssembly-native L1 with live HTTP-based micropayment infrastructure for agents. The toolkit also bundles MCP access and agent skills. | Live June 4, 2026 | Chainwire |
The most honest account of what x402 traffic actually looks like today.
Cumulative transactions on Base. Growth surged in Q4 2025, driven largely by meme coin activity (notably PING), then moderated in early 2026. Chainalysis is direct that mass adoption remains distant and that current participants are mostly crypto-native.
30-day value transferred. Sellers grew 23 percent and buyers grew 37 percent over the same window.
Tester-to-payer conversion. The historical baseline worth keeping: in late Q1 2026 a single independent data marketplace reported 1,183 agent probes, 5 settlements, and $0.11 of revenue. The bounce diagnosis then was evaluation friction, not payment friction: agents declining to pay because they cannot judge whether a resource is worth the cost. The improving conversion rate is the number to watch against that diagnosis.
If you are building on x402, integrating it, or running traffic through it, we would like to know. Tracker entries are fact-checked before publication. Get in touch.
This tracker is also available as raw data at majormatters.co/x402.json. Cite freely with a link back to this page.
Charlie Major is a Product Development Manager at Mastercard. The views and opinions expressed in Major Matters are his own and do not represent those of Mastercard.