{"uid":"cap_idUCGpu3LZbqLk8p9dciS","slug":"agentindex-x402-tip-endpoint-5d594195","name":"AgentIndex x402 Tip Endpoint","description":"Pay-per-call tools for AI agents: web search + content, documents, live market data, and multi-chain wallet/gas reads. Mainnet test from $0.000001 USDC on Base. Pay-per-call tools for AI agents in USDC on Base (x402/MPP): search, pdf, web-read, extract, summarize, fact-check, translate, jobs, discover. See GET /capabilities.","url":"https://x402.agentindex.world/tip?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":[],"properties":{"message":{"type":"string","description":"Optional test message to echo after successful settlement."}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["ok","purpose","network","price_usdc","price_atomic_usdc","request"],"properties":{"ok":{"type":"boolean"},"payer":{"type":["string","null"]},"network":{"type":"string"},"purpose":{"type":"string"},"request":{"type":"object"},"price_usdc":{"type":"number"},"x402_receipt":{"type":"object"},"price_atomic_usdc":{"type":"string"}}}}}}},"responseSchema":{"type":"json","example":{"ok":true,"payer":"0xb3F32bdfe8D07825BC0D7387295aB1D7559BA69d","network":"eip155:8453","purpose":"support-agentindex","request":{"echo":{"hello":"agent"},"method":"POST"},"price_usdc":0.01,"price_atomic_usdc":"10000"}},"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_TYRn_NR1TCVP6hlyb_dGx","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Accepts a micropayment tip via x402/USDC on Base and echoes back a payment receipt with payer, network, and request metadata.","exampleAgentPrompt":"Send a $0.01 USDC tip to AgentIndex on Base using x402 and echo back 'hello agent' so I can confirm the payment went through.","exampleUseCases":[{"title":"Test x402 payment flow","prompt":"Send a tiny $0.01 USDC test payment to AgentIndex via x402 on Base mainnet and echo the message 'payment test OK' so I can see the receipt and confirm my wallet is set up correctly."},{"title":"Verify payer wallet receipt","prompt":"Make a $0.01 x402 tip to AgentIndex on Base and show me the receipt — I need to confirm which wallet address was charged and that the network is eip155:8453."},{"title":"Tip AgentIndex after tool use","prompt":"Send a $0.01 USDC tip to AgentIndex on Base as a thank-you for the web search results I just got — use x402 and confirm the payment settled."}],"resultDescription":"Returns a JSON object with ok (boolean), payer wallet address, network (eip155:8453 for Base), purpose string, price in USDC and atomic units, an x402 receipt object, and an echo of any message or request fields sent.","failureModes":["Payment not settled: returns 402 if x402 payment header is missing or insufficient","Invalid method: only GET, HEAD, DELETE are accepted","Insufficient USDC balance: payment fails at the facilitator level","Network mismatch: payment on wrong chain results in rejection","Malformed query params: unexpected fields rejected due to strict schema"],"whenToPreferThis":"Use this endpoint to test or demonstrate x402 micropayment settlement on Base mainnet, confirm wallet and payment infrastructure is working, or send a small tip to AgentIndex. It is the simplest x402 endpoint available — not for data retrieval or AI tool calls.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T00:42:33.806Z","isFirstParty":false,"canonicalSlug":"agentindex-x402-tip-endpoint-5d594195"}