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Base Token Check by LIN Desk
x402
Base Token Check by LIN Desk is a paid API for AI agents from lin-desk-x402.lindesk.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-10).
Checks an ERC-20 token contract on Base mainnet for name, symbol, decimals, total supply, owner, proxy/upgradeability status, and risk flags.
Price / call$0.003
Success—
StatusUnknown
How this service works
Use when an agent needs a quick ERC-20 contract check on Base before trading or accepting a token: name/symbol/decimals/total supply, owner and whether ownership is renounced, EIP-1967 / legacy proxy (upgradeable) detection, flags. $0.003 per call, USDC on Base (x402). Read-only; not security advice. Non-contract addresses and upstream errors are not charged.
Output
A JSON object containing: token name, symbol, decimals, total supply (human-readable and raw), owner address, ownership_renounced boolean, proxy details (EIP-1967 admin/implementation, ZeppelinOS implementation), is_contract boolean, risk flags array (e.g. 'upgradeable_proxy_zeppelinos', 'has_owner'), chain, chain_id, block_number, bytecode_bytes, and a cached boolean indicating whether the result was served from cache.
Example use cases
Pre-trade token safety check
“I'm about to buy a token at 0x4200000000000000000000000000000000000006 on Base — can you pull its name, symbol, total supply, and tell me if the contract is upgradeable or if ownership has been renounced?”
DeFi bot proxy detection
“Check whether the contract 0x833589fcd6edb6e08f4c7c32d4f71b54bda02913 on Base is an upgradeable proxy — I need to know the EIP-1967 implementation address and whether it uses ZeppelinOS before my bot interacts with it.”
Token listing due diligence
“We're considering listing a new Base token at address 0x50c5725949a6f0c72e6c4a641f24049a917db0cb — please fetch its on-chain name, symbol, decimals, owner, and any proxy or risk flags so I can review it.”
Technical details
Endpoint
GEThttps://lin-desk-x402.lindesk.workers.dev/v1/base/token?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a cheap, fast, read-only on-chain check of an ERC-20 contract on Base mainnet before trading, listing, or accepting a token. It is specifically valuable for detecting upgradeable proxy patterns (EIP-1967 and ZeppelinOS) and renounced ownership — signals not available from simple token metadata APIs. Prefer it over general blockchain explorers when you need structured, machine-readable output with risk flags at low cost ($0.003/call via x402 USDC on Base) and no API key setup.
Side effects
- Non-contract address supplied — returns an is_contract:false result but is not charged
- Upstream RPC error — returns an error response, not charged
- Invalid address format — rejected by input validation before the call is made
- Token does not implement standard ERC-20 interface — erc20 field returns false
- Rate limiting or network timeout from the Base RPC provider
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"name": "USD Coin",
"as_of": 1791020283,
"chain": "base",
"erc20": true,
"flags": [
"upgradeable_proxy_zeppelinos",
"has_owner"
],
"owner": "0x3abd6f64a422225e61e435bae41db12096106df7",
"proxy": {
"eip1967_admin": null,
"eip1967_implementation": null,
"zeppelinos_implementation": "0x2ce6311ddae708829bc0784c967b7d77d19fd779"
},
"cached": false,
"symbol": "USDC",
"address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"chain_id": 8453,
"decimals": 6,
"is_contract": true,
"block_number": 52115468,
"total_supply": "4372296189.660356",
"bytecode_bytes": 1852,
"total_supply_raw": "4372296189660356",
"ownership_renounced": false
}
}Tags
x402
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