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Onchain Toolkit – ERC-20 Token Metadata Reader
x402
Onchain Toolkit – ERC-20 Token Metadata Reader is a paid API for AI agents from onchain-toolkit.bowling-anthony.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Reads ERC-20 token name, symbol, decimals, and total supply directly from a smart contract, and verifies the address contains deployed code on the specified chain.
Price / call$0.005
Success—
StatusUnknown
How this service works
ERC-20 name, symbol, decimals and total supply read from the contract itself, and confirmation the address has code on that chain.
Output
Returns the ERC-20 token's on-chain name, symbol, decimals, and total supply as read directly from the contract, plus a boolean confirming whether contract bytecode exists at the given address on the specified chain.
Example use cases
Token metadata lookup for DeFi dashboard
“Can you pull the full token info — name, symbol, decimals, and total supply — for the contract 0x6B175474E89094C44Da98b954EedeAC495271d0F on Ethereum so I can display it in my dashboard?”
Verify a suspicious token contract
“I received a token at address 0xdeadbeef00000000000000000000000000000001 on Polygon — can you check if there's actually a contract deployed there and what its name and symbol are?”
Onboard a new ERC-20 for a wallet app
“We're adding support for a new token. Can you look up the name, symbol, and decimals for the contract 0x1f9840a85d5aF5bf1D1762F925BDADdC4201F984 on Ethereum mainnet so we can configure it correctly?”
Technical details
Endpoint
GEThttps://onchain-toolkit.bowling-anthony.workers.dev/tokenWhen to prefer
Use this endpoint when you need authoritative, on-chain ERC-20 token metadata (name, symbol, decimals, total supply) read directly from the contract rather than from a third-party token list or database. Ideal when you need to verify a token is genuinely deployed and conforms to ERC-20, or when working with obscure or newly deployed tokens not yet indexed by aggregators.
Side effects
- Address has no deployed contract code — returns code-present: false and no token fields
- Address is a non-ERC-20 contract that doesn't implement the standard interface — may return partial or null fields
- Invalid or malformed contract address — likely a 400 or error response
- Unsupported chain ID — endpoint may not support all EVM chains
- Rate limit or payment failure — 402 or 429 response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"symbol": "USDC",
"decimals": 6,
"looksLikeErc20": true
}
}Tags
x402
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