OFAC sanctions screening for a name - fuzzy match across ~19,000 SDN entries and aliases

Complete wallet snapshot in one call: SOL, USDC, all tokens, activity count, account age and risk verdict.

Latest transaction signatures for an address (signature, slot, blockTime, error flag). ?limit= up to 1000. Live, for activity tracking.

Ethereum transaction gas estimate - gas units, gas price and fee in the native coin

Polygon transaction gas estimate - gas units, gas price and fee in the native coin

Returns an estimated age for a given name using a free public API (e.g., "age": 34).

MCP server security scan - tool poisoning, prompt injection and risky capabilities before you connect

Unit conversion across length, mass, volume, speed, data, energy, pressure and temperature

Polygon block by number or latest - hash, time, transaction count, gas used, base fee and miner

Optimism block by number or latest - hash, time, transaction count, gas used, base fee and miner

Total USD value of a wallet: SOL (live price) + every SPL token balance valued by DEX price. One call for a full portfolio valuation.

x402 Offer Check API: probes a public x402 storefront from the Cloudflare edge (GET, POST, OPTIONS) and reports what a buyer sees - payment-required header vs body, extra, bazaar, CORS, header size, 404 on the other method - as findings by severity. $0.01 USDC per check, a live measurement (a replayed payment header returns the receipt, not a new measurement). POST JSON {url, method?}; free example at https://api.aiskills402.com/v1/run/x402-offer-check/example

Prepaid API credits and API key for clients that cannot sign an x402 payment per call (most MCP clients): one payment buys credit ($5, $20 = $22 credit, $50 = $60) and returns an API key. Send it as X-API-Key on any paid route or MCP tool; each call costs its x402 price and failed calls are refunded. With your key in X-API-Key it tops that key up.

Whale activity in a token ($0.01): the largest wallets buying and selling any ERC-20 in the last hour on Base, Ethereum, Arbitrum, Optimism or Polygon, net USD per wallet, buys and sells, smart-money labels, bot flags and smart-money net flow. Use to see whether whales accumulate or dump.

Google Maps reviews API for AI agents: send a place_id or a Google Maps place URL and get up to 50 reviews as JSON: stars, text and its translation, date, likes, the owner's reply, plus the place's name, address and rating. Sort by newest, relevant, highest or lowest. Reviewer names, profiles and photos are not returned. A place with no reviews is not charged; reviews you paid for but did not get are refunded.

One call combines domain availability, heuristic value appraisal, and TLD pricing into a single acquisition brief — tells an agent whether a name is available, what it's worth, and what it costs across TLDs, concurrently and with graceful partial-failure handling.

Replays a real buy and sell of the token on chain state and tells you if you can get out again: buy_succeeded, sell_succeeded, buy and sell tax in percent, honeypot reason, estimated round-trip cost in percent and USD for amount_usd, plus the pools used. Use before buying an unknown token or in a trading bot. EVM chains are simulated; Solana returns status not_simulated with authority and pool checks. No liquidity returns status no_liquidity. Cost excludes LP fees and gas.

One premium call returns a complete six-part domain profile — DNS records, SSL certificate, WHOIS registration, cloud fingerprint, technology stack, and security headers — each section run concurrently with graceful partial-failure handling, so agents get an entire domain workup in a single request instead of orchestrating six.

Call OpenAI's gpt-5.2 via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.20 per request in USDC. Standard OpenAI chat.completions request/response shape, capped input and output.

Call OpenAI's gpt-5.6-sol via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.65 per request in USDC. Standard OpenAI chat.completions request/response shape, capped input and output.