{"uid":"cap_CgKhrp8MksYJ14kGQKmHh","slug":"synapse-api-katana-rpc-endpoint-7f76aa5a","name":"Synapse API — Katana 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/katana/rpc","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_MKfOnC0x9a8qOk59VUR7h","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":"Exposes a JSON-RPC interface for the Katana blockchain node, enabling interaction with Katana-compatible chain methods via pay-per-call x402 payments","exampleAgentPrompt":"Send a JSON-RPC call to the Katana network using method 'eth_blockNumber' with an empty params array and return me the current block number.","exampleUseCases":[{"title":"Query current block number","prompt":"Call the Katana RPC endpoint with the method 'eth_blockNumber' and empty params, and tell me what the latest block number is on the Katana chain."},{"title":"Read smart contract storage slot","prompt":"Use Katana RPC to call 'eth_getStorageAt' with contract address 0xABC123, storage slot 0x0, and block tag 'latest' — I need to read that storage value on-chain."},{"title":"Broadcast raw transaction to Katana","prompt":"Submit this signed raw transaction to the Katana network using 'eth_sendRawTransaction' with params ['0xf86c...'] and confirm it was accepted."}],"resultDescription":"A JSON-RPC response object containing the result field with the on-chain data, transaction hash, block details, or error object depending on the method called.","failureModes":["Invalid RPC method name returns a JSON-RPC error with code -32601","Malformed params array causes -32602 invalid params error","Payment not provided or insufficient USDC results in HTTP 402 Payment Required","Network congestion or node unavailability causes timeout or -32603 internal error","Submitting an already-mined or invalid transaction returns execution reverted error"],"whenToPreferThis":"Choose this endpoint when you need pay-per-call, no-subscription access to a Katana-compatible blockchain node via standard JSON-RPC, particularly when you want to avoid running your own node or committing to a monthly RPC plan. Best for low-frequency or one-off on-chain queries and transaction submissions on the Katana network.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:43:04.078Z","isFirstParty":false}