{"uid":"cap_YrUeWJ-xUSlAIw1LKnwn4","slug":"synapse-api-polygon-rpc-endpoint-6ae20ffe","name":"Synapse API — Polygon RPC Endpoint","description":"High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.","url":"https://synapse-api-brown.vercel.app/api/polygon/rpc?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"method":{"type":"string"},"params":{"type":"array","items":{}}}},"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_gv8EXiK53ZC3n3PS3_U6B","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 JSON-RPC calls to the Polygon blockchain network, enabling agents to read chain state, submit transactions, and interact with smart contracts on Polygon.","exampleAgentPrompt":"Can you check the current MATIC balance for wallet address 0xAbC123... on the Polygon mainnet using an eth_getBalance RPC call?","exampleUseCases":[{"title":"DeFi portfolio balance check","prompt":"Look up the ETH/ERC-20 token balance for my wallet 0x1234abcd... on Polygon mainnet — use eth_getBalance to fetch the current MATIC balance."},{"title":"Smart contract state query","prompt":"Call the Polygon RPC with eth_call to read the totalSupply from the USDC contract at 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174."},{"title":"Latest block number retrieval","prompt":"What's the latest block number on Polygon right now? Run an eth_blockNumber RPC call and tell me the result."}],"resultDescription":"Returns a standard JSON-RPC response object containing an 'id', 'jsonrpc' version field, and a 'result' field with the blockchain data (e.g. block number as hex, balance in wei, transaction receipt object, or contract call return data). On error, returns a JSON-RPC error object with code and message.","failureModes":["Invalid RPC method name returns JSON-RPC error code -32601 (method not found)","Malformed params array returns error code -32602 (invalid params)","Network congestion or upstream node unavailability causes timeout or 503","Payment failure (insufficient USDC) results in 402 Payment Required before the call is proxied","Calling write methods without a signed transaction will fail with execution error"],"whenToPreferThis":"Choose this endpoint when you need pay-per-call, no-subscription access to Polygon blockchain RPC without managing your own node or committing to a monthly RPC plan. Ideal for agents that occasionally need Polygon chain data and want to pay $0.01 USDC per call via x402 micropayments rather than provisioning an Alchemy, Infura, or QuickNode account.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:13:57.801Z","isFirstParty":false,"canonicalSlug":"synapse-api-polygon-rpc-endpoint-6ae20ffe"}