{"uid":"cap_WwJ6eqjM4koE86o5QmcaW","slug":"quantaflow-x402-api-gateway-alchemy-base-mainnet-0c63c5e4","name":"QuantaFlow x402 API Gateway — Alchemy Base Mainnet","description":"Every request, a quantum of value. x402 protocol-based payment endpoint for web3/DeFi tools.","url":"https://quanta-roan.vercel.app/api/service/alchemy-base-mainnet?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"body":{"type":"string","description":"Optional JSON body forwarded to POST requests."},"path":{"type":"string","description":"Path below the selected upstream origin."},"query":{"type":"object"},"method":{"enum":["GET","POST"],"type":"string"}}},"responseSchema":{"description":"The upstream response body and content type are passed through after successful payment."},"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_Dva-rF_Ao1kLL-DS4M4C9","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":"Proxies requests to Alchemy's Base mainnet RPC/API endpoints via the x402 micropayment protocol, charging $0.01 USDC per call.","exampleAgentPrompt":"Using the QuantaFlow gateway, query Alchemy's Base mainnet to get the current ETH balance for wallet address 0xAbC...123 — send a POST with path /v2/getBalance and the address in the body.","exampleUseCases":[{"title":"Token balance lookup on Base","prompt":"Can you check the USDC token balance for wallet 0xAbC...123 on Base mainnet using the Alchemy API? Just hit the token balance endpoint with that address."},{"title":"Smart contract state query","prompt":"I need to call eth_call on Base mainnet to read the current price from the Uniswap V3 pool contract at 0xDef...456 — can you forward that RPC request through the Alchemy gateway?"},{"title":"Recent transaction history fetch","prompt":"Pull the last 10 transactions for address 0x789...XYZ on Base mainnet from Alchemy's asset transfers API so I can audit recent activity."}],"resultDescription":"The raw upstream response from Alchemy's Base mainnet API is passed through as-is, including the response body and content type. This may be JSON-RPC results, token balances, transaction data, NFT metadata, or any other Alchemy Enhanced API response depending on the path called.","failureModes":["Payment failure: x402 payment not accepted or insufficient USDC balance — gateway returns 402 Payment Required","Invalid path: requested path not available on Alchemy Base mainnet — returns upstream 404 or error","Malformed body: invalid JSON in body field — upstream returns 400 Bad Request","Rate limiting: Alchemy upstream rate limit exceeded — returns 429 Too Many Requests","Network error: Base mainnet RPC node unavailable — returns 503 or upstream timeout"],"whenToPreferThis":"Choose this endpoint when you need pay-per-call access to Alchemy's Base mainnet APIs without a pre-provisioned API key, using the x402 micropayment protocol for frictionless on-chain billing at $0.01 per request. It is ideal for agents that need occasional or bursty access to Base mainnet blockchain data (balances, transactions, contract calls) without managing API subscriptions.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-10T00:55:44.051Z","isFirstParty":false,"canonicalSlug":"quantaflow-x402-api-gateway-alchemy-base-mainnet-0c63c5e4"}