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DopamineDesk Transaction Simulator API
x402
DopamineDesk Transaction Simulator API is a paid API for AI agents from ai-data-marketplace-1042299154756.us-central1.run.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).
Simulates a blockchain transaction to predict revert status, gas usage, and token transfers before on-chain submission.
Price / call$0.005
Success—
StatusUnknown
How this service works
Run a read-only transaction simulation with eth_call and eth_estimateGas against a supported public EVM RPC without signing or broadcasting.
Output
Returns a JSON object with a status field ('success' or 'failure'), a boolean indicating if the transaction reverts, the estimated gas_used, and an array of simulated_transfers showing each token movement (from address, to address, token type, and amount) that would occur if the transaction were executed on-chain.
Example use cases
Pre-flight DeFi swap check
“I'm about to execute a Uniswap swap on Base — can you simulate it first? Sender is 0xMyWallet, contract is 0xUniswapRouter, calldata is 0x38ed1739...deadbeef, and value is 0 wei. Tell me if it reverts and how much gas it'll consume.”
Smart contract security dry-run
“Before we deploy this interaction, simulate this contract call on Ethereum mainnet — from 0xDeployer, to 0xTargetContract, calldata 0x095ea7b3...feed, value 0. I want to confirm it won't revert and see any token movements it triggers.”
Validate airdrop calldata
“We're about to send a batch airdrop transaction on Base — sender 0xTreasury, contract 0xAirdropContract, calldata 0x1249c58b...cafe, value 0 wei. Can you dry-run it to make sure it won't revert and show me who receives tokens?”
Technical details
Endpoint
GEThttps://ai-data-marketplace-1042299154756.us-central1.run.app/api/v1/tx_simulatorWhen to prefer
Use this endpoint when you need to dry-run a blockchain transaction before committing it on-chain — especially for DeFi interactions, smart contract calls, or token transfers where revert risk or gas estimation matters. Prefer this over on-chain submission when safety validation, gas budgeting, or previewing token flows is the goal. It is particularly valuable in agentic pipelines where an AI must confirm transaction safety before executing a payment or contract interaction.
Side effects
- Invalid or malformed hex calldata returns a parsing error
- Unknown or unsupported network identifier results in a 400 error
- Destination contract address does not exist on the specified network
- Simulation infrastructure timeout for complex multi-call transactions
- Missing required fields (to, data, network) causes validation failure
- Insufficient context for simulation if dependent state is unavailable
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"source": "base public JSON-RPC",
"network": "base",
"success": true,
"broadcast": false,
"return_data": "0x0000000000000000000000000000000000000000000000000000000000000006",
"estimated_gas": "30958",
"simulation_status": "SUCCESS",
"marketplace_metadata": "[object with keys: data_mode, billable, availability, source; full example in /openapi.json]"
}
}Tags
x402
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