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Foundry Token List
x402
Foundry Token List is a paid API for AI agents from minty-sprout.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-01).
Returns verified token addresses, symbols, and decimals for a given chain and optional token symbol from the Uniswap default token list
Price / call$0.001
Success—
StatusUnknown
How this service works
Token list: verified token addresses and decimals on Base, Ethereum, Arbitrum and more (Uniswap list). Input: 'base usdc'.
Output
A JSON object containing the result count, the source list name ('Uniswap default token list'), the chain ID, and an array of matching tokens each with name, symbol, contract address, and decimals.
Example use cases
Resolve token address before a swap
“I'm about to do a token swap on Arbitrum — can you look up the verified contract address and decimals for WETH on Arbitrum from the Uniswap list so I'm not using a random unverified address?”
Populate DeFi app token metadata
“For my app I need the canonical contract address and decimal count for USDC on Ethereum mainnet — get it from the Uniswap default token list.”
Validate token details for a smart contract call
“Before I send this transaction, can you confirm the correct contract address and decimals for DAI on Base using the Uniswap verified token list?”
Technical details
Endpoint
POSThttps://minty-sprout.onrender.com/v1/token-list?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need authoritative, Uniswap-curated contract addresses and decimal precision for tokens across Base, Ethereum, Arbitrum, and other major EVM chains — especially before executing swaps, building DeFi integrations, or validating token parameters in smart contract calls. Prefer this over manual lookups or unverified sources when correctness of the contract address matters.
Side effects
- Token not found on the specified chain returns empty tokens array with count 0
- Ambiguous or misspelled chain name may return no results or an error
- Token symbol that exists on one chain but not another returns empty results for that chain
- Network timeout from the render.com host under cold-start conditions
- Payment required (402) if x402 micropayment header is missing or malformed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | Chain and optional token symbol |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 1,
"source": "Uniswap default token list",
"tokens": [
{
"name": "USD Coin",
"symbol": "USDC",
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"decimals": 6
}
],
"chain_id": 8453
}
}Tags
x402
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