feat(x402): route payments through mcp.openmm.io proxy via split execution#31
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feat(x402): route payments through mcp.openmm.io proxy via split execution#31
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…ution - Replace withX402 + withAutoPayment interceptor with wrapWithSplitPayment from @qbtlabs/x402/split — payment verification and settlement now route through https://mcp.openmm.io by default instead of x402.org/facilitator - payment.ts: rewrite as applyPaymentGate(server) — no configure/setToolPrices, just wrapWithSplitPayment with privateKey, workerUrl, testnet, freeTools - server.ts: replace manual server.tool interceptor with applyPaymentGate(server) called before registerTools; must be called before tool registration - Delete payment-client.ts — split gate handles signing + retry internally - .env.example: replace X402_EVM_ADDRESS with X402_PRIVATE_KEY; PAYMENT_SERVER now defaults to https://mcp.openmm.io - README: update x402 section to document split flow, new env vars, and correct MCP client config examples Split execution flow (mirrors openmm-mcp architecture): 1. Tool called — no payment header required from caller 2. Gate POSTs to workerUrl/verify-payment 3. Worker returns 402 with EIP-3009 requirements 4. Gate signs locally with X402_PRIVATE_KEY (key never leaves process) 5. Gate retries with X-PAYMENT header → worker issues JWT 6. Gate verifies JWT locally, executes handler, injects tx hash in response
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Summary
withX402+withAutoPaymentwithwrapWithSplitPaymentfrom@qbtlabs/x402/splitPAYMENT_SERVERnow defaults tohttps://mcp.openmm.ioinstead of going directly tox402.org/facilitatorsrc/payment-client.ts— split gate handles signing, retry, and JWT verification internallysrc/payment.tsrewritten asapplyPaymentGate(server)— one call beforeregisterTools, no per-tool wrappers.env.exampleand README updated:X402_EVM_ADDRESS→X402_PRIVATE_KEY, proxy URL documentedSplit execution flow
Process isolation: indigo-mcp never holds the recipient wallet — only the payer key. Verification and settlement are handled by the openmm.io proxy.
Dependencies
Stacks on top of #30 (
feat/3rd-400-x402-integration). Merge #30 first, then this.