frames·cloud
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x402

coinbase-x402

fields

nameREQ x402 x402.org 2026-05-04
vendorREQ Coinbase / x402 Foundation x402.org 2026-05-04
category payment-protocol x402.org 2026-05-04
chains Base (eip155:8453), Ethereum (eip155:1), Optimism (eip155:10), Polygon (eip155:137), Arbitrum (eip155:42161), Solana mainnet, Solana devnet, Aptos, Stellar, Hedera, Sui, Avalanche; Base Sepolia (testnet); USDC primary2 revisions x402.org 2026-05-04
payment_protocols x402 v1, x402 v2 (HTTP 402-based); exact scheme (EVM ERC-20, Solana SPL, multi-chain fixed transfer); upto scheme (EVM max-authorize/settle-actual); CAIP-2 network IDs; modular plugin SDK for custom chains and facilitators2 revisions x402.org 2026-05-04
api_base_url https://x402.org x402.org 2026-05-04
registry_endpoint
services facilitator/verify — https://x402.org/facilitator — Verify PaymentPayload for given PaymentRequirements (Coinbase-operated public facilitator) facilitator/settle — https://x402.org/facilitator — Settle verified payment on-chain paymentMiddleware — npm:@x402/express / @x402/hono / @x402/next / @x402/fastify — Server-side paywall middleware (1-line integration, v2) @x402/fetch client — npm:@x402/fetch — Client that auto-handles 402, signs, and retries @x402/paywall — npm:@x402/paywall — Modular paywall package with EVM + Solana backends (v2) python SDK — pip:x402 — Python client/server integration Go SDK — go:github.com/x402-foundation/x402/go — Go client/server integration Discovery extension — https://docs.x402.org — Structured endpoint metadata; facilitators auto-index available x402 services2 revisions x402.org 2026-05-04
auth_model Permissionless; client-side signing with any EVM or Solana wallet; facilitator handles settlement x402.org 2026-05-04
sdk_languages TypeScript/JavaScript (@x402/* npm packages), Python (pip x402), Go, Java x402.org 2026-05-04
pricing_model Zero protocol fees; only blockchain network fees (gas / tx fees) x402.org 2026-05-04
status active2 revisions x402.org 2026-05-04
docs_url https://docs.x402.org x402.org 2026-05-04
announcement_url https://x402.org/writing/x402-v2-launch2 revisions x402.org 2026-05-04
last_verified_at 2026-05-04T14:00:00Z3 revisions x402.org 2026-05-04

history · 14 fields · 21 revisions

name1 revision
x402 current x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
vendor1 revision
Coinbase / x402 Foundation current x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
category1 revision
payment-protocol current x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
chains2 revisions
Base (eip155:8453), Ethereum (eip155:1), Optimism (eip155:10), Polygon (eip155:137), Arbitrum (eip155:42161), Solana mainnet, Solana devnet, Aptos, Stellar, Hedera, Sui, Avalanche; Base Sepolia (testnet); USDC primary current x402.org · 2026-05-04
V2 evolves the specification based on learnings from 6 months of x402 performing real-world payments: clearer separation between clients, servers, facilitators; modular SDK; Aptos, Stellar, Hedera, Sui support added; CAIP standards; @x402 npm org.
Base (eip155:8453), Ethereum (eip155:1), Optimism (eip155:10), Polygon (eip155:137), Arbitrum (eip155:42161), BNB Smart Chain (eip155:56), Solana mainnet, Solana devnet, Stellar (in SDK); fiat facilitators possible superseded x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
payment_protocols2 revisions
x402 v1, x402 v2 (HTTP 402-based); exact scheme (EVM ERC-20, Solana SPL, multi-chain fixed transfer); upto scheme (EVM max-authorize/settle-actual); CAIP-2 network IDs; modular plugin SDK for custom chains and facilitators current x402.org · 2026-05-04
V2 evolves the specification based on learnings from 6 months of x402 performing real-world payments: clearer separation between clients, servers, facilitators; modular SDK; Aptos, Stellar, Hedera, Sui support added; CAIP standards; @x402 npm org.
x402 v1, x402 v2 (HTTP 402-based); CAIP-2 network IDs; EIP-3009 (EVM exact scheme); SPL transfer (Solana) superseded x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
api_base_url1 revision
https://x402.org current x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
services2 revisions
facilitator/verify — https://x402.org/facilitator — Verify PaymentPayload for given PaymentRequirements (Coinbase-operated public facilitator) facilitator/settle — https://x402.org/facilitator — Settle verified payment on-chain paymentMiddleware — npm:@x402/express / @x402/hono / @x402/next / @x402/fastify — Server-side paywall middleware (1-line integration, v2) @x402/fetch client — npm:@x402/fetch — Client that auto-handles 402, signs, and retries @x402/paywall — npm:@x402/paywall — Modular paywall package with EVM + Solana backends (v2) python SDK — pip:x402 — Python client/server integration Go SDK — go:github.com/x402-foundation/x402/go — Go client/server integration Discovery extension — https://docs.x402.org — Structured endpoint metadata; facilitators auto-index available x402 services current x402.org · 2026-05-04
V2 evolves the specification based on learnings from 6 months of x402 performing real-world payments: clearer separation between clients, servers, facilitators; modular SDK; Aptos, Stellar, Hedera, Sui support added; CAIP standards; @x402 npm org.
facilitator/verify — https://x402.org (facilitator endpoint) — Verify PaymentPayload for a given PaymentRequirements facilitator/settle — https://x402.org (facilitator endpoint) — Settle verified payment on-chain paymentMiddleware — npm:@x402/express / @x402/hono / @x402/next / @x402/fastify — Server-side paywall middleware (1-line integration) @x402/fetch client — npm:@x402/fetch — Client that auto-handles 402, signs, and retries @x402/paywall — npm:@x402/paywall — Modular paywall package (v2) python SDK — pip:x402 — Python client/server integration Go SDK — go:github.com/x402-foundation/x402/go — Go client/server integration superseded x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
auth_model1 revision
Permissionless; client-side signing with any EVM or Solana wallet; facilitator handles settlement current x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
sdk_languages1 revision
TypeScript/JavaScript (@x402/* npm packages), Python (pip x402), Go, Java current x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
pricing_model1 revision
Zero protocol fees; only blockchain network fees (gas / tx fees) current x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
status2 revisions
active current x402.org · 2026-05-04
V2 evolves the specification based on learnings from 6 months of x402 performing real-world payments: clearer separation between clients, servers, facilitators; modular SDK; Aptos, Stellar, Hedera, Sui support added; CAIP standards; @x402 npm org.
active superseded x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
docs_url1 revision
https://docs.x402.org current x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
announcement_url2 revisions
https://x402.org/writing/x402-v2-launch current x402.org · 2026-05-04
x402 V2 launched Dec 11 2025, processed 100M+ payments. New: CAIP-based multi-chain, modular SDK (@x402/* npm org), wallet-based sessions, Discovery extension, multi-facilitator support. Foundation launched jointly with Cloudflare.
https://x402.org/writing/x402-v2-launch superseded x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.
last_verified_at3 revisions
2026-05-04T14:00:00Z current x402.org · 2026-05-04
V2 evolves the specification based on learnings from 6 months of x402 performing real-world payments: clearer separation between clients, servers, facilitators; modular SDK; Aptos, Stellar, Hedera, Sui support added; CAIP standards; @x402 npm org.
2026-05-04T12:00:00Z superseded x402.org · 2026-05-04
x402 V2 launched Dec 11 2025, processed 100M+ payments. New: CAIP-based multi-chain, modular SDK (@x402/* npm org), wallet-based sessions, Discovery extension, multi-facilitator support. Foundation launched jointly with Cloudflare.
2026-05-04T00:00:00Z superseded x402.org · 2026-05-04
x402 v2 launched December 11, 2025. Over 100M payments processed. Open standard built on HTTP 402. TypeScript, Python, Go SDKs. Zero protocol fees. Supported by Coinbase, Cloudflare, AWS, Stripe, Vercel, World.