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Synapse API — Gnosis Gas Estimator
x402
Synapse API — Gnosis Gas Estimator 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 2026-09-14).
Estimates gas cost for a transaction on the Gnosis blockchain network before execution
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 amount (in gas units) required to execute the specified transaction on the Gnosis network, allowing the caller to gauge cost before committing the transaction on-chain.
Example use cases
Pre-flight DeFi transaction check
“Before I execute this swap on a Gnosis DEX, estimate the gas cost — the sender is 0xMyWallet, the contract is 0xDexRouter, and the calldata is 0xa9059cbb000... so I know if it's worth sending.”
Smart contract deployment cost preview
“Can you estimate how much gas it'll cost to deploy this smart contract on Gnosis? The bytecode data is 0x6080..., sender is 0xDeployerWallet, and there's no ETH value being sent.”
Token transfer fee calculation
“I want to send some xDAI on Gnosis — estimate the gas fee for a transfer from 0xMyAddress to 0xFriendAddress with value 0xDE0B6B3A7640000 before I actually submit it.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/gnosis/gas/estimateWhen to prefer
Choose this endpoint when you specifically need gas estimation for the Gnosis (formerly xDAI) blockchain network. It is a pre-execution simulation tool — ideal before committing any transaction to avoid overpaying or running out of gas. Use it when your workflow targets Gnosis mainnet specifically rather than Ethereum, Polygon, or other EVM chains.
Side effects
- Invalid or malformed Ethereum address in 'to' or 'from' fields returns an error
- Invalid hex-encoded 'data' or 'value' fields cause parsing errors
- Transaction simulation fails if the contract call would revert, returning an execution error
- Network connectivity issues with Gnosis RPC node result in timeout or 503 errors
- Missing required fields may return a 400 bad request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | |
| data | string | |
| from | string | |
| value | string |
Tags
x402
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