Official links
Relationships
| From | Type | To | Evidence |
|---|---|---|---|
| coinbase | BUILDS | x402 | Verified |
| coinbase | OPERATES | bazaar | Verified |
| coinbase | OPERATES | cdp | Verified |
| evt-base-l2-fees-enable-micropayments | DISCUSSES | coinbase | Verified |
| evt-cdp-x402-discovery-resources | DISCUSSES | coinbase | Observed |
| evt-coinbase-agentkit-openai-agents-2025-03-11 | DISCUSSES | coinbase | Verified |
| evt-coinbase-agentkit | DISCUSSES | coinbase | Observed |
| evt-coinbase-x402-2025-05-06 | DISCUSSES | coinbase | Verified |
| evt-linux-foundation-x402-intent-2026-04-02 | DISCUSSES | coinbase | Verified |
| evt-linux-foundation-x402-operational-2026-07-14 | DISCUSSES | coinbase | Verified |
| evt-x402-docs-seller-quickstart | DISCUSSES | coinbase | Observed |
| evt-x402-npm-core | DISCUSSES | coinbase | Observed |
Recent events
Linux Foundation announces operational launch of the x402 Foundation
On 14 July 2026 the Linux Foundation announced the operational launch of the x402 Foundation and completed contribution of the protocol by Coinbase. Premier members listed include Adyen, AWS, American Express, Circle, Cloudflare, Coinbase, Google, Mastercard, Shopify, Stripe, Visa and others. Membership is not settlement volume.
VerifiedSourceLinux Foundation announces it is launching the x402 Foundation
On 2 April 2026, at MCP Dev Summit North America, the Linux Foundation announced it is launching the x402 Foundation with contribution of the x402 protocol from Coinbase. Named intending supporters included Cloudflare, Stripe, Visa, Mastercard, Circle, Google and others. This is a governance announcement, not a traffic print.
VerifiedSourcex402 seller docs distinguish test facilitator from CDP mainnet
Official seller documentation instructs developers not to reuse https://x402.org/facilitator on mainnet routes. Production examples include the CDP facilitator at api.cdp.coinbase.com/platform/v2/x402 and facilitator.payai.network. Supported networks listed include Base mainnet eip155:8453 and Solana.
ObservedSource@x402/core becomes the reference TypeScript client/server SDK
The @x402/core, @x402/evm, @x402/fetch and @x402/express packages are the maintained TypeScript implementation path used by sellers and buyers. Version lines in the 2.x series indicate HTTP-header transport rather than early prototypes.
ObservedSourceCDP publishes machine-readable x402 resource discovery
Coinbase Developer Platform exposes x402 discovery endpoints, including resource listings and merchant-by-payTo queries. These indexes are observations of listed resources and optional quality fields such as recent calls and unique payers. They are not Foundry revenue and not proof of independent demand for any one seller.
ObservedSourceCheap L2 fees are the economic precondition x402 keeps citing
The x402 announcement contrasts earlier Bitcoin-channel micropayment experiments with modern L2 fees on Base. The commercial claim is not that fees are zero; it is that they are low enough for API-priced calls. zFinia records this as a market precondition, not as a fee oracle.
VerifiedSourceCoinbase introduces x402: stablecoin payments over HTTP 402
On 6 May 2025 Coinbase Developer Platform published x402. Servers return HTTP 402 with payment requirements; clients retry with a signed payment, typically USDC on cheap L2s such as Base. The announcement explicitly targets APIs, apps and AI agents. Documentation and a reference implementation were pointed at x402.org and GitHub.
VerifiedSourceCoinbase AgentKit adds launch-day support for OpenAI’s Agents SDK
On 11 March 2025 Coinbase Developer Platform said AgentKit would support OpenAI’s Agents SDK on launch day, so developers could attach commercial/wallet capabilities to that orchestration kit. This is vendor documentation of an integration, not proof of independent paid volume.
VerifiedSource
Source
verified · https://zfinia.com/methodology