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LogicNodes Aptos Transaction Simulate
x402
LogicNodes Aptos Transaction Simulate is a paid API for AI agents from logicnodes.io, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-28).
Simulates an Aptos Move function call to predict gas usage and outcome before submitting it on-chain
Price / call$0.005
Success—
StatusUnknown
How this service works
Exact answers for AI agents: 40+ tools for EVM chains and Aptos, gas on 14 chains, never a guess. Free tier; pay per call in USDC (x402) on 13 networks.
Output
Returns a JSON object with an 'ok' boolean and the tool name, along with simulation details including predicted gas consumption, VM status, and whether the transaction would succeed or fail if submitted — without actually executing anything on-chain.
Example use cases
DeFi swap gas estimation
“Before I submit this Aptos DEX swap, simulate the call to 0x1::dex::swap_exact_input with my address 0xabc...123 and arguments ["0x1::aptos_coin::AptosCoin", 5000000] on Aptos mainnet — will it succeed and what gas should I expect?”
Pre-flight NFT mint check
“Simulate an Aptos mainnet transaction calling 0xNFTContract::minting::mint_nft from sender 0xmywallet...456 with arguments ["collection_name", 1] so I can verify it won't fail and see the gas cost before I actually send it.”
Testnet contract validation
“I'm testing my Move contract on Aptos testnet — can you simulate calling 0xmycontract::my_module::execute_action from sender 0xdev...789 with no arguments to confirm the function runs without errors?”
Technical details
Endpoint
POSThttps://logicnodes.io/paid/v1/tools/aptos_tx_simulate?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to pre-validate an Aptos Move function call before committing a real transaction — especially useful for estimating gas, catching VM errors early, testing contract logic on testnet, or building reliable agent workflows that must not waste APT on failed transactions. Prefer this over direct submission when transaction success is uncertain or when optimizing gas parameters.
Side effects
- Invalid sender address format returns error
- Nonexistent Move function identifier causes simulation failure
- Insufficient sequence number mismatch leads to rejection
- Invalid type arguments produce Move VM type error
- Chain ID not recognized (must be aptos:1 or aptos:2)
- Network connectivity issues to Aptos node return 5xx
- Payment not included or insufficient USDC causes 402 rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | Aptos CAIP-2 id: aptos:1 (mainnet, default) or aptos:2 (testnet) |
| sender | string | |
| function | string | |
| arguments | array | |
| gasUnitPrice | — | |
| maxGasAmount | — | |
| typeArguments | array | |
| sequenceNumber | — |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"tool": "aptos_tx_simulate"
}
}Tags
x402
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