{"uid":"cap_x_AlDPK3ZvPoVX48LvOwt","slug":"quantaflow-x402-api-gateway-alchemy-plasma-mainnet-e50ebfa5","name":"QuantaFlow x402 API Gateway – Alchemy Plasma 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-plasma-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_jtyIToZn2_jhep7yo9f4k","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's Plasma mainnet endpoint via the x402 micropayment protocol, charging $0.01 USDC per call.","exampleAgentPrompt":"Query the Alchemy Plasma mainnet for the latest block number — forward a GET request to the /v2/eth_blockNumber path with no body, and pay the $0.01 USDC per-call fee via x402.","exampleUseCases":[{"title":"Fetch latest Plasma mainnet block","prompt":"Get me the latest block number from Alchemy Plasma mainnet — send a JSON-RPC call to /v2 with method eth_blockNumber and an empty params array."},{"title":"Check wallet balance on Plasma","prompt":"Look up the ETH balance for wallet address 0xAbC123... on Alchemy Plasma mainnet by calling /v2 with eth_getBalance and block tag 'latest'."},{"title":"Retrieve transaction receipt on-chain","prompt":"Pull the transaction receipt for tx hash 0xDef456... from Alchemy Plasma mainnet using eth_getTransactionReceipt forwarded through QuantaFlow."}],"resultDescription":"The raw upstream response body and content-type from Alchemy's Plasma mainnet are passed through unchanged after the $0.01 USDC x402 payment is settled. The agent receives exactly what Alchemy would have returned directly.","failureModes":["Payment failure: insufficient USDC balance or x402 facilitator rejection returns a 402 Payment Required error","Invalid path: malformed or unsupported Alchemy endpoint path returns an upstream 404 or error JSON","Bad request body: malformed JSON in the body field causes an upstream 400 error","Rate limiting: upstream Alchemy rate limits may return 429 Too Many Requests","Network error: Vercel or upstream Alchemy unavailability returns 5xx errors"],"whenToPreferThis":"Choose this endpoint when you need pay-per-use, subscription-free access to Alchemy's Plasma mainnet RPC without managing API keys or monthly plans. It is ideal for agents that make infrequent or unpredictable on-chain queries and want to pay only for what they use via USDC micropayments on the x402 protocol.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T12:43:18.446Z","isFirstParty":false,"canonicalSlug":"quantaflow-x402-api-gateway-alchemy-plasma-mainnet-e50ebfa5"}