{"uid":"cap_RssDm7Yn_ONIRDu0U9r_d","slug":"api-21-cash-50b762a0","name":"21.cash Payment Link Fetch","description":"Fetches a 21.cash payment link requiring an exact USD Coin (v2) payment of 10000 units on network eip155:8453 to 0x778... with a 300s timeout.","url":"https://api.21.cash/api/links/0x7784486915fE4679d285cf253e08313532dDC0B0","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"content":{"type":"object","properties":{"name":{"type":"string"},"amount":{"type":"string"},"chainId":{"type":"number"},"chainName":{"type":"string"},"description":{"type":"string"},"gatedContent":{},"routerAddress":{"type":"string"}}},"message":{"type":"string"},"receipt":{"type":"object","properties":{"network":{"type":"string"},"transactionHash":{"type":"string"}}},"success":{"type":"boolean"}}}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_1ewX67nc0X2JECfba7ZnL","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches a 21.cash payment link requiring an exact 10000-unit USDC (v2) payment on Base (eip155:8453) to a specific address with a 300-second timeout.","exampleAgentPrompt":"Fetch me a 21.cash payment link to collect exactly 10000 USDC v2 units on the Base network (eip155:8453) to wallet 0x7784486915fE4679d285cf253e08313532dDC0B0, with a 300-second expiry.","exampleUseCases":null,"resultDescription":"A 21.cash payment link or payment request object specifying the exact USDC (v2) amount (10000 units), the recipient wallet address on Base (eip155:8453), and a 300-second expiration window, enabling a payer to complete the transaction.","failureModes":["Payment address unreachable or invalid — returns error on address validation","Network mismatch if not targeting eip155:8453 — request rejected","Timeout exceeded (300s) — payment link expires and must be re-fetched","Insufficient USDC v2 balance on payer side — payment fails downstream","API call cost not covered ($0.01 USDC) — 402 payment required error"],"whenToPreferThis":"Use this endpoint when you need to generate a precise, time-limited USDC v2 payment link on the Base network (eip155:8453) directed to wallet 0x7784486915fE4679d285cf253e08313532dDC0B0. Prefer it over generic crypto payment processors when you require exact-amount enforcement, Base network specificity, and a short expiry window.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T06:37:48.995Z","isFirstParty":false}