{"uid":"cap_MH_OXBytZBOaYG99vYQRm","slug":"coin-railz-seamless-chain-bridge-cross-chain-usdc-transfer-via-circle-01c3060f","name":"Coin Railz Seamless Chain Bridge - Cross-Chain USDC Transfer via Circle CCTP","description":"Cross-chain USDC routing via Circle CCTP - Pay on Ethereum, receive on Base/Polygon/Arbitrum instantly (Premium B2B2C Infrastructure)","url":"https://coinrailz.com/x402/service/seamless-chain-bridge","method":"POST","headers":{},"bodySchema":{"type":"object","required":["amount","toChain","fromChain","toAddress","fromAddress"],"properties":{"amount":{"type":"string","description":"USDC amount to bridge"},"toChain":{"enum":["ethereum","polygon","base","arbitrum","optimism"],"type":"string","description":"Destination blockchain"},"currency":{"type":"string","description":"Currency to bridge (default: USDC)"},"fromChain":{"enum":["ethereum","polygon","base","arbitrum","optimism"],"type":"string","description":"Source blockchain"},"toAddress":{"type":"string","description":"Recipient wallet address on destination chain"},"fromAddress":{"type":"string","description":"Sender wallet address"}}},"responseSchema":{"type":"object","properties":{"estimatedTime":{"type":"number","description":"Estimated completion time in seconds"},"bridgeTransaction":{"type":"object","description":"Cross-chain bridge transaction details"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"2","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$2/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"2","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"2","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_Nn5VvJtNJSmB5XoHnhGM6","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"2","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Bridges USDC across blockchains (Ethereum, Base, Polygon, Arbitrum) using Circle's CCTP for near-instant cross-chain transfers","exampleAgentPrompt":"Bridge 500 USDC from Ethereum (from my wallet 0xABCDef1234567890abcdef1234567890abcdef12) to Base network, sending it to my Base address 0x9876543210fedcba9876543210fedcba98765432.","exampleUseCases":null,"resultDescription":"Returns a bridgeTransaction object with cross-chain transaction details and an estimatedTime (in seconds) for when the USDC will arrive on the destination chain via Circle CCTP.","failureModes":["Invalid or unsupported source/destination chain combination","Malformed wallet addresses for fromAddress or toAddress","Amount too low or too high for bridge limits","Insufficient USDC balance on source chain","Circle CCTP attestation delay or timeout","Network congestion causing slower-than-estimated completion"],"whenToPreferThis":"Use this endpoint when an agent needs to move USDC between Ethereum mainnet and L2 chains (Base, Polygon, Arbitrum) and requires a structured transaction response with time estimates. Prefer over manual DEX bridging when Circle CCTP-backed reliability and instant finality are required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:46:12.043Z","isFirstParty":false}