{"uid":"cap_KZwONReduhlqzjWDRYjXS","slug":"api-oatp-cc-b75edca3","name":"OATP tx_simulator","description":"OATP · tx_simulator — Simulate a base64-encoded Solana transaction without broadcasting it. Returns success/err, logs, compute units consumed, and any accounts the simulator surfaces.","url":"https://api.oatp.cc/tools/tx_simulator","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"mint":{"type":"string","description":"Solana token mint address (base58, 32-44 chars)"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.2","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.2/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_yod33Aoez8ORYVNQGWQK2","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.5","costPer":"request","priority":0,"asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Simulates a base64-encoded Solana transaction without broadcasting it, returning success/failure, logs, compute units consumed, and affected accounts.","exampleAgentPrompt":"Can you simulate this Solana transaction for me without broadcasting it — I want to see if it'll succeed, what logs it produces, and how many compute units it'll use: [base64-encoded transaction string here]?","exampleUseCases":null,"resultDescription":"Returns a simulation result including success or error status, program logs from the simulated execution, total compute units consumed, and any accounts the simulator surfaces during the dry run — all without submitting the transaction to the Solana network.","failureModes":["Invalid or malformed base64 transaction payload returns a deserialization error","Transaction simulation fails due to insufficient compute budget","Account not found errors if referenced accounts don't exist on-chain","Simulation error if the transaction would fail on-chain (e.g. slippage, balance issues)","HTTP 402 if payment is not included or USDC balance is insufficient"],"whenToPreferThis":"Use this endpoint when you need to dry-run a Solana transaction before broadcasting — especially useful for verifying correctness, estimating compute units, debugging program errors, or confirming that a swap or DeFi operation won't revert. Prefer over live submission whenever safety or cost estimation is a concern.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T17:28:46.337Z","isFirstParty":false}