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Saylor Innovations On-Chain Lookups — Ethereum eth_call
x402
Saylor Innovations On-Chain Lookups — Ethereum eth_call is a paid API for AI agents from saylorinnovations.com, paid per call via x402, $0.003/call, status unknown (last checked 2026-09-30).
Executes a read-only smart contract call (eth_call) on Ethereum mainnet given a contract address and ABI-encoded calldata, returning the decoded result or revert status.
Price / call$0.003
Success—
StatusUnknown
How this service works
Read-Only Contract Call (eth_call) (ethereum). Ethereum read-only contract call (eth_call) with ?data= calldata, optional ?from= and ?block=; reverts reported cleanly with revert data.
Output
Returns a JSON object with the chain name, contract address, the raw hex result of the call (or null), a boolean indicating if the call reverted, and an optional error string if something went wrong.
Example use cases
Check ERC-20 token balance on-chain
“What's the USDC balance of wallet 0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe on Ethereum? Call the balanceOf function on the USDC contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48.”
Read DeFi protocol reserve data
“Query the Uniswap V2 pair contract at 0xB4e16d0168e52d35CaCD2c6185b44281Ec28C9Dc on Ethereum to get the current reserves — use the getReserves() view function.”
Verify NFT ownership on Ethereum
“Check who owns token ID 42 on the Bored Ape Yacht Club contract at 0xBC4CA0EdA7647A8aB7C2061c2E118A18a936f13D on Ethereum — call ownerOf with the ABI-encoded token ID.”
Technical details
Endpoint
GEThttps://saylorinnovations.com/api/evm/ethereum/call/:address?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to read state from a specific Ethereum mainnet smart contract using a view or pure function without sending a transaction. Ideal for fetching token balances, reading DeFi protocol parameters, checking NFT ownership, or any stateless eth_call. Prefer it over general-purpose RPC providers when you need a simple HTTP GET interface with per-call micropayment pricing and no API key setup.
Side effects
- Contract call reverts — reverted: true with error message describing the revert reason
- Invalid or malformed ABI-encoded calldata — likely returns error or unexpected result
- Contract address does not exist on Ethereum mainnet — may return empty result or error
- Malformed address in URL path — 400-level error or error field populated
- Network or RPC timeout — upstream Ethereum node unavailability
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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