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Synapse API — SUI Gas Estimation
x402
Synapse API — SUI Gas Estimation is a paid API for AI agents from synapse-api-brown.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-13).
Estimates the gas fee for a transaction on the SUI blockchain network given sender, recipient, value, and calldata.
Price / call$0.01
Success—
StatusUnknown
How this service works
High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.
Output
Returns an estimated gas cost for the described SUI transaction, typically expressed in MIST or SUI gas units, allowing the caller to determine transaction feasibility and budget before submitting to the network.
Example use cases
Pre-flight SUI transfer cost check
“Before I send 5 SUI from my wallet 0xabc...111 to 0xdef...222, can you estimate how much gas I'll need to pay so I know if I have enough balance?”
Smart contract call gas preview
“I'm about to call a SUI smart contract at 0x789...abc from my address 0x123...def with calldata 0xdeadbeef — what will the gas cost be?”
Budget planning for SUI DApp
“I need to estimate the transaction fees for a SUI move call — sender is 0xaaa...001, recipient 0xbbb...002, value is 500000000 MIST and data is 0xcafe — what's the gas estimate?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/sui/gas/estimateWhen to prefer
Use this endpoint when you need a quick, pay-per-call gas estimate for SUI blockchain transactions without running a full node or maintaining RPC infrastructure. Ideal for agents building SUI transaction pipelines, DApp backends, or wallets that need real-time fee previews before submitting transactions.
Side effects
- Invalid or malformed address fields causing a 400 error
- Missing required fields (to, from) returning a validation error
- Network unavailability or SUI node connectivity issues causing 500 errors
- Unsupported calldata format causing estimation failure
- Extremely complex transactions exceeding estimation limits
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | |
| data | string | |
| from | string | |
| value | string |
Tags
x402
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