Foundry
x402 seller due diligence: everything in x402-preflight PLUS on-chain proof of real demand (USDC actually received by the seller's payTo in the last 24h: payments, distinct payers, volume) and a Bazaar listing-truth audit (is this URL listed, does the listed price match what it charges). Reveals dead, fake or mispriced sellers before payment.
- Category
- Images, audio & video
- Starting price
- $0.001
- Paid calls · 30 days
- 110
- Unique payers · 30 days
- 108
Paid endpoints
106 endpoints, sorted by usage. Prices are per request.
- POST/v1/crypto-news
Crypto news: the latest headlines with links from CoinDesk, Cointelegraph, Decrypt and Bitcoin Magazine, optionally filtered by keyword. Input: a keyword or 'latest'.
$0.001Base1calls / 30d - POST/v1/prediction-markets
Prediction market odds from Polymarket: top markets by 24h volume, or those matching keywords, with implied odds, volume and end date. Input: keywords or 'top'.
$0.005Base1calls / 30d - POST/v1/erc20-balance
ERC-20 token balance for any wallet on Base, Ethereum, Arbitrum, Optimism or Polygon (USDC, USDT, DAI, WETH or any address), plus native balance. Input: 'wallet token chain'.
$0.002Base1calls / 30d - POST/v1/treasury-yields
US Treasury yields: the latest daily par yield curve from 1 month to 30 years, with the 10y-2y spread (U.S. Treasury, public domain). Input: any text.
$0.002Base1calls / 30d - POST/v1/random-number
Random numbers from a secure RNG: integers in a range, dice like 2d6, or a coin flip. Input: '1 100', '1 100 5', '2d6' or 'coin'.
$0.001Base1calls / 30d - POST/v1/token-verdict
Token verdict: send a Base token contract address, get an AI-written risk verdict with an A-F grade, score and flags (mint, blacklist, pause, fees, upgradeable, owner), plus DEX liquidity, volume and pool age. Not financial advice.
$0.01Base1calls / 30d