{"uid":"cap_G-eWJuHyPAZTrQIfr2Mon","slug":"synapse-api-starknet-rpc-proxy-50f6cba8","name":"Synapse API — StarkNet RPC Proxy","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/starknet/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_LbPvsXFt1Azb7k7TdSStr","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 method calls to the StarkNet blockchain network, enabling read and write interactions with StarkNet nodes.","exampleAgentPrompt":"Call the starknet_getBlockWithTxs RPC method on StarkNet with the latest block tag as the parameter and return the full block data.","exampleUseCases":[{"title":"Check StarkNet account balance","prompt":"Query the StarkNet network for the ETH balance of account 0x049d36570d4e46f48e99674bd3fcc84644ddd6b96f7c741b1562b82f9e004dc7 using starknet_call."},{"title":"Fetch latest StarkNet block","prompt":"Get the most recent block from StarkNet using the starknet_getBlockWithTxHashes method with block_tag set to 'latest'."},{"title":"Retrieve StarkNet transaction receipt","prompt":"Look up the transaction receipt on StarkNet for tx hash 0x06d11fa74255c1f86aace54cbf382ab8c89e2b90fb0801f751834ca52bf2f7a2 using starknet_getTransactionReceipt."}],"resultDescription":"Returns the standard JSON-RPC response object from the StarkNet node, including a result field containing the requested blockchain data (block info, transaction receipt, contract state, etc.) or an error object with code and message if the call fails.","failureModes":["Invalid RPC method name returns JSON-RPC error with code -32601 (method not found)","Malformed params array causes -32602 (invalid params) error","StarkNet node unavailable or rate-limited returns 503 or timeout","Payment failure (insufficient USDC) results in 402 response before the RPC call is made","Requesting a non-existent block or transaction returns a StarkNet-specific error code"],"whenToPreferThis":"Use this endpoint when you need pay-per-call access to StarkNet RPC without running your own node or managing an Infura/Alchemy subscription. Ideal for agents that make infrequent or unpredictable StarkNet queries and prefer micro-payment billing via x402 USDC rather than monthly API key plans.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T06:53:11.642Z","isFirstParty":false,"canonicalSlug":"synapse-api-starknet-rpc-proxy-50f6cba8"}