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Synthora Contract Metadata Lookup
x402
Synthora Contract Metadata Lookup is a paid API for AI agents from rpc-contract.hergertsynthora.com, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).
Returns EVM smart contract metadata (name, symbol, decimals, is-contract, is-ERC20) for a given chain and address, with Ed25519-signed deterministic responses
Price / call$0.1
Success—
StatusUnknown
How this service works
Contract metadata: name/symbol/decimals, is-contract, is-erc20. Deterministic, Ed25519-signed.
Output
Returns the contract's name, symbol, and decimals (for ERC20 tokens), boolean flags indicating whether the address is a deployed contract and whether it conforms to the ERC20 standard, all cryptographically signed with Ed25519 for deterministic verification.
Example use cases
Verify token legitimacy before swap
“Before I swap to this token at 0x2260fac5e5542a773aa44fbcfedf7c193bc2c599, can you verify it's actually a real ERC20 token and tell me its name, symbol, and decimals? I want to make sure it's not a fake contract.”
Bulk validate contract addresses
“I have a list of contract addresses across different chains and I need to quickly check which ones are actual deployed contracts versus EOAs, and which are ERC20 tokens. Can you look those up for me?”
Audit token metadata consistency
“I'm auditing our token contracts and need to verify the on-chain name, symbol, and decimals match what we expect for several addresses on Base and Polygon. Can you pull that metadata for me?”
Technical details
Endpoint
POSThttps://rpc-contract.hergertsynthora.com/serviceWhen to prefer
Use this endpoint when you need lightweight, signed contract metadata (name/symbol/decimals/is-ERC20) for EVM addresses without running your own node. Prefer it over generic RPC calls when you want cryptographic proof of the response via Ed25519 signature, or when cost is a concern (first 3 calls free per wallet, then $0.003 USDC).
Side effects
- Invalid or non-checksummed address returns error
- Unsupported chain identifier returns error
- Upstream RPC node failure returns no charge and an error response
- Malformed request body returns 400
- Exceeded free-tier calls without wallet header may require x402 payment
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | chain |
| addressrequired | string | address |
Tags
x402
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