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Toolbelt402 Token Info Lookup
x402
Toolbelt402 Token Info Lookup is a paid API for AI agents from toolbelt402.catalystdesk.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).
Returns on-chain metadata for an ERC-20 token contract address on Base, including symbol, decimals, and heuristic flags like upgradeable proxy detection.
Price / call$0.005
Success—
StatusUnknown
How this service works
Pay-per-call utility API for AI agents — x402, USDC on Base, no API key.
Output
Returns a JSON object with the token's symbol (e.g. 'USDC'), decimals (e.g. 6), and an array of heuristic_flags (e.g. ['upgradeable_proxy_eip1967']) describing smart contract patterns detected on-chain.
Example use cases
Identify unknown token contract
“I found this contract address 0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA on Base in a transaction — can you tell me what token it is, its symbol, and how many decimals it uses?”
Check for upgradeable proxy risk
“Before I interact with this DeFi contract at 0x4200000000000000000000000000000000000006, can you check if it's an upgradeable proxy and give me its token metadata?”
Enrich token data for portfolio app
“I need the symbol and decimals for the token at address 0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb on Base so I can display balances correctly in my app.”
Technical details
Endpoint
GEThttps://toolbelt402.catalystdesk.workers.dev/v1/token?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need lightweight, no-auth ERC-20 token metadata — symbol, decimals, and proxy heuristics — for contracts deployed on Base, and you want pay-per-call pricing via x402 USDC micropayments without managing API keys. Prefer it over general blockchain explorers when you want programmatic, structured JSON output with heuristic contract analysis baked in.
Side effects
- Invalid or non-ERC-20 contract address returns empty or error response
- Address not found on Base network returns null metadata
- Payment failure via x402 protocol results in 402 response before data is returned
- Non-checksummed or malformed address may cause lookup failure
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"symbol": "USDC",
"decimals": 6,
"heuristic_flags": [
"upgradeable_proxy_eip1967"
]
}
}Tags
x402
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