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paypi Solana Transaction Simulator
x402
paypi Solana Transaction Simulator is a paid API for AI agents from pay.ansht.tech, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-16).
Simulates a Solana transaction to preview execution results, compute units consumed, failure reasons, and program logs before broadcasting.
Price / call$0.005
Success—
StatusUnknown
How this service works
x402-paid Solana capabilities: transaction decode, simulation, security scan, program explain, and Kamino liquidation risk. Pay per request in USDC.
Output
Returns a JSON object indicating whether the simulation succeeded (ok: true/false), an error object with InstructionError details if it failed, program execution logs, the human-readable failure reason (e.g. 'insufficient funds'), and the number of compute units consumed.
Example use cases
Pre-flight check before token swap
“Before I execute this Jupiter swap transaction, simulate it first and tell me if it'll go through or fail — here's the base64-encoded tx: 'AQAAAAA...swap...' — I need to see the logs and how many compute units it'll consume.”
Debug failing DeFi transaction
“My Solana transaction keeps failing and I don't know why. Can you simulate this tx 'AQAAAAAxyz...' on mainnet and tell me the failure reason and any error codes so I can figure out what's wrong?”
Compute unit estimation for fee optimization
“I'm building a Solana program and want to know how many compute units this instruction uses — simulate this transaction 'AQAAAABabc...' and give me the unitsConsumed so I can set the right compute budget.”
Technical details
Endpoint
GEThttps://pay.ansht.tech/v1/simulateWhen to prefer
Use this endpoint when you need to dry-run a Solana transaction before broadcasting it — particularly useful for debugging failures, estimating compute units, previewing DeFi instruction outcomes, or validating a transaction built programmatically. Prefer this over on-chain submission when you want zero-cost, zero-risk transaction previewing with detailed logs and error introspection.
Side effects
- Invalid or malformed base64 transaction — returns parse error
- Transaction references accounts that don't exist on the chosen cluster
- Simulation itself errors due to missing blockhash or expired transaction
- Payment not included or insufficient — x402 payment required before response
- Cluster value not recognized — defaults or errors depending on implementation
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": false,
"err": {
"InstructionError": [
0,
"Custom"
]
},
"logs": [],
"failureReason": "insufficient funds",
"unitsConsumed": 4512
}
}Tags
x402
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