{"uid":"cap_rkKJW93OwVVgVWS_BFg8U","slug":"quantaflow-x402-api-gateway-alchemy-bob-mainnet-f88387e3","name":"QuantaFlow x402 API Gateway — Alchemy Bob 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-bob-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_o-j2pD0t8xD83n8sUKCMk","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 paid API requests to Alchemy Bob mainnet node via x402 micropayment protocol, charging $0.01 USDC per call","exampleAgentPrompt":"Using the QuantaFlow x402 gateway, query the Alchemy Bob mainnet node to get the current ETH balance for address 0xAbC123... — route the eth_getBalance call through the /api/service/alchemy-bob-mainnet path and pay the $0.01 USDC fee per request.","exampleUseCases":[{"title":"Fetch on-chain token balance","prompt":"Check the current USDC token balance for wallet address 0xDeFi456... on Bob mainnet using the QuantaFlow Alchemy gateway — I need the raw balance from the latest block."},{"title":"Smart contract read call on Bob mainnet","prompt":"Call the read-only totalSupply function on the Bob mainnet smart contract at 0xContract789... through the QuantaFlow x402 Alchemy proxy and return the result."},{"title":"Fetch latest block number for DeFi monitoring","prompt":"Query the Alchemy Bob mainnet node via QuantaFlow to get the latest block number so I can check if my DeFi transaction has been confirmed."}],"resultDescription":"The raw upstream response body and content type from the Alchemy Bob mainnet node, passed through transparently after the $0.01 USDC x402 payment is verified. This includes standard JSON-RPC response payloads such as block data, account balances, contract call results, or transaction receipts.","failureModes":["Payment failure: insufficient USDC balance or x402 payment not accepted — gateway returns 402 Payment Required","Invalid path: malformed or unsupported path below the upstream origin — upstream returns 400 or 404","Upstream Alchemy node error: RPC method not found or invalid params — returns standard JSON-RPC error object","Network timeout: Alchemy node or gateway unreachable — returns 502 or 504","Rate limiting: excessive requests beyond allowed quota — returns 429 Too Many Requests"],"whenToPreferThis":"Choose this endpoint when you need pay-per-call access to Alchemy's Bob mainnet node without a long-term API key subscription, particularly in autonomous agent workflows where x402 micropayments are already integrated. Ideal for low-volume or sporadic blockchain queries on Bob mainnet where $0.01 USDC per call is acceptable and you want to avoid managing Alchemy credentials directly.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T18:51:21.499Z","isFirstParty":false,"canonicalSlug":"quantaflow-x402-api-gateway-alchemy-bob-mainnet-f88387e3"}