{"uid":"cap_LNU2pFnr3u1-_xwtYRVX8","slug":"statepulse-blockchain-transaction-simulator-ba143294","name":"StatePulse Blockchain Transaction Simulator","description":"Runs eth_call state simulation against the Base blockchain RPC to check for transaction reverts. Matches: EVM revert checks, test contract call, inspect transaction failure, dry-run solidity method, gas estimator, test token swap failure, simulate multisig transaction execution.","url":"https://statepulse-api.hahavoid0.workers.dev/blockchain/simulate","method":"POST","headers":{},"bodySchema":null,"responseSchema":{"type":"json","example":{"result":{"reverted":false,"output_hex":"0x0000000000000000000000000000000000000000000000000000000000000000"},"supported":true,"confidence":"high"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.05","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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":"$0.05/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.05","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_kgVC1WgYk2iKUzEaCzsy8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.05","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Simulates an Ethereum smart contract transaction and returns whether it would revert, the output hex, and a confidence level — without broadcasting to the network.","exampleAgentPrompt":"Can you simulate this Ethereum contract call to check if it'll revert before I actually send it — the contract is 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48, calldata is 0xa9059cbb000...00de0b6b3a7640000, and the sender is 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045?","exampleUseCases":null,"resultDescription":"Returns a JSON object with a 'result' field containing 'reverted' (boolean indicating if the tx would revert), 'output_hex' (the raw hex output of the call), a 'supported' flag (boolean), and a 'confidence' string (e.g. 'high').","failureModes":["Unsupported contract or network returns supported:false","Malformed calldata returns a 400-level error","Contract not found at address returns an error or low confidence result","Simulation backend temporarily unavailable returns 5xx","Payment not processed via x402/USDC returns 402 payment required"],"whenToPreferThis":"Use this endpoint when you need a fast, keyless, pay-per-call simulation of an Ethereum smart contract call to check for reverts or preview outputs before committing a real on-chain transaction. Prefer it over full node eth_call when you want a managed, serverless simulation with a confidence indicator and no API key setup required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:41:39.316Z","isFirstParty":false}