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Agent402 Coin Price by Contract
x402
Agent402 Coin Price by Contract is a paid API for AI agents from agent402.tools, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns real-time token prices, market cap, 24h volume, and 24h price change for up to 25 ERC-20/SPL token contracts on a specified blockchain platform.
Price / call$0.005
Success—
StatusUnknown
How this service works
Live price, market cap, 24h volume and 24h change for ERC-20 / SPL / other chain tokens looked up by CONTRACT ADDRESS on a named platform (ethereum, base, polygon-pos, arbitrum-one, optimistic-ethereum, binance-smart-chain, solana, avalanche, ...). Up to 25 contracts per call, any vs currency (default usd). The address-first sibling of crypto-price: use it when an agent holds a token address from a wallet, a DEX pair or a contract scan and has no coin id.
Output
Returns a JSON object with an array of token records, each containing: contract address, price in the requested currency, market cap, 24h trading volume, 24h price change percentage, and last-updated timestamp. Also includes metadata such as the data source (CoinGecko), platform, currency, fetch time, and whether the result was served from cache.
Example use cases
DeFi portfolio valuation
“I need to value my DeFi positions — can you get current prices in USD for these three Ethereum contract addresses: 0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48, 0x6b175474e89094c44da98b954eedeac495271d0f, and 0xdac17f958d2ee523a2206206994597c13d831ec7?”
Token price alert monitoring
“Fetch the current price and 24h change percentage for the token at contract 0x2260fac5e5542a773aa44fbcfedf7c193bc2c599 on Ethereum — I want to know if it's moved more than 5% today.”
Cross-chain price comparison
“Get me the price in EUR for the token at contract 0x7d1afa7b718fb893db30a3abc0cfc608aacfebb0 on Polygon and the same token at 0x3BA4c387f786bFEE076A58914F5Bd38d668B42c on Ethereum so I can compare them.”
Technical details
Endpoint
GEThttps://agent402.tools/api/coin-price-by-contractWhen to prefer
Use this endpoint when you have one or more specific token contract addresses and need real-time price, market cap, or volume data for tokens on a supported EVM or Solana-compatible chain. It is ideal for DeFi agents, portfolio trackers, and arbitrage monitors that work directly with contract addresses rather than ticker symbols. Prefer this over ticker-based price APIs when you need multi-chain contract-level precision or when the token lacks a widely-recognized symbol.
Side effects
- Invalid or unrecognized contract address returns empty tokens array
- Unsupported platform ID causes validation error
- More than 25 contracts in a single request may be rejected
- Invalid currency code returns error or defaults to USD
- Network timeout from upstream CoinGecko data source
- Payment failure (insufficient USDC balance) blocks the call
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"count": 1,
"cached": false,
"source": "coingecko",
"tokens": [
{
"price": 0.999916,
"contract": "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48",
"marketCap": 73514026487.98,
"volume24h": 26092767405.46,
"lastUpdated": "2026-08-22T13:15:40.000Z",
"change24hPct": 0.0212
}
],
"currency": "usd",
"platform": "ethereum",
"fetchedAt": "2026-08-22T13:20:00.000Z"
}
}Tags
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