General Utilities x402 offerings

Check if a username is taken across 10 developer platforms (GitHub, GitLab, Reddit, HackerNews, dev.to, Medium, npm, PyPI, StackOverflow, ProductHunt). Returns per-platform {taken, status, url}. Use ?username=alice or ?username=alice and platforms=github,reddit. Built for AI agents helping pick handles, brand audits. Accepts payment on Base or Solana — either network works.

Recent NFT sales for a collection by contract and chain: buyer, seller, price, marketplace and time, from an indexed source behind an API key. For floor, volume and wash-trade analysis. nft trades, nft sales, recent sales, nft price history, marketplace activity Accepts payment on Base or Solana — either network works.

Search Wikipedia articles. Returns title, snippet (highlighted match), pageid, wordcount, and direct article URL. Use ?q=YOUR_QUERY plus optional and lang=en|de|es|zh|ja|fr and limit=10. Built for AI research agents and fact-checkers needing ground-truth article discovery (300+ languages, CC BY-SA). Accepts payment on Base or Solana — either network works.

Local business search — name, address, phone, hours, rating, reviews and coordinates for a place or area. For lead generation, local SEO and location data. local search, business listings, places, maps, lead generation, local seo, geocoding Accepts payment on Base or Solana — either network works.

Suggest typo corrections for an email address. Catches domain typos (gmial.com → gmail.com) and TLD typos (.con → .com) via Levenshtein distance against 23 common domains. Use ?email=user@gmial.con. Built for AI agents validating signup forms, reducing bounce rates. Accepts payment on Base or Solana — either network works.

Live AVGO Broadcom stock quote (NASDAQ). Zero-param: GET returns current price. 博通股票实时报价。ブロードコム株価。Cotización Broadcom. 브로드컴 주가. AVGO stock price, broadcom quote. Accepts payment on Base or Solana — either network works.

Cross-seller price comparison for a product in one call: pulls live shopping listings via residential-IP scraping, parses prices, and returns the cheapest offer plus the price range and median across sellers. For deal-finding and repricing agents. price comparison, cheapest price, compare sellers, product price check, best deal, shopping Accepts payment on Base or Solana — either network works.

Wallet age and activity profile: POST a Base address, returns wallet age (since first inbound), total transaction count, ETH balance, last activity date, days since last tx, and a recent monthly activity heatmap. Verdict: fresh, established, dormant, inactive, with sybil/freshness flags. For AI agent due diligence to distinguish a brand-new throwaway wallet from an established active one before transacting. Not financial advice. Accepts payment on Base or Solana — either network works.

Convert DAI to USD at live price. Pass ?amount=1 for value in US Dollar. Dai稳定币兑换美元换算。ダイを米ドルに換算。Convertir Dai a dólar. 다이를 달러로 환전. dai to usd, Dai convert. Accepts payment on Base or Solana — either network works.

Convert between EVM units (wei, gwei, ether) or arbitrary token decimals. Pass value, from and to as unit names or decimal counts. For gas math, token amount formatting and price math. wei gwei ether, unit conversion, token decimals, format units, parse units Accepts payment on Base or Solana — either network works.

Check whether a crypto address appears on the US OFAC sanctions list before transacting - a compliance must-have for agents that LLMs cannot verify against live lists. ofac check, sanctioned address, sanctions screening, compliance check, blacklist address, sdn list Accepts payment on Base or Solana — either network works.

Live SGD to USD exchange rate (Singapore Dollar / US Dollar). Zero-param: GET returns current rate. 新加坡元兑美元实时汇率。シンガポールドル/米ドル 為替レート。Tipo de cambio dólar de Singapur-dólar. 싱가포르 달러 달러 환율. sgd usd, sgd-usd, SGD/USD forex quote. Accepts payment on Base or Solana — either network works.

Taker buy/sell volume ratio for a coin, showing aggressive order-flow bias over the recent window. Built from OKX aggregated taker volume to reveal whether market buyers or sellers are in control right now. Live order-flow signal for momentum and reversal context. taker buy sell ratio, order flow, aggressive volume, flow bias Accepts payment on Base or Solana — either network works.

Top DeFi yield/APY opportunities across protocols and chains via DefiLlama, filterable by token symbol or chain, sorted by APY. defi yield, apy rates, yield farming, staking rewards, lending rates, best apy Accepts payment on Base or Solana — either network works.

Modern WHOIS via RDAP protocol (RFC 7480): registrant, registrar, registration date, expiry, nameservers, status flags. Use ?domain=example.com. Accepts payment on Base or Solana — either network works.

readability score, text readability, Flesch reading ease, reading grade level, reading level, text difficulty, reading age, readability index, text complexity, readability analysis, reading grade, reading ease, text level. Analyze text readability with multiple metrics including reading ease, grade level, syllable and sentence counts. For AI agents content optimization, education tools, writing assistants, accessibility checks. Accepts payment on Base or Solana — either network works.

URL encoder/decoder, percent encoding, RFC 3986, query string escape, form data, encodeURIComponent, decodeURIComponent. Safely escape URLs for HTTP. Accepts payment on Base or Solana — either network works.

Estimate the price impact (slippage) of a swap of a given size by comparing Uniswap V3 quotes at minimal vs target size - tells trading agents how much a large order will move the price against them before they execute, on-chain data LLMs cannot compute. price impact, slippage estimate, swap slippage, large trade impact, market depth, liquidity check Accepts payment on Base or Solana — either network works.

AES decryption, AES-256-GCM decrypt, symmetric decryption, authenticated decryption, decrypt cipher, decode encrypted. Decrypt AES-256-GCM ciphertext given the key, IV, and authentication tag. Accepts payment on Base or Solana — either network works.

New vs exited x402 sellers over a chosen window with net entity change - reveals whether the x402 ecosystem is attracting or losing participants, an entry-momentum signal for investors and researchers, from proprietary multi-day snapshots that cannot be reconstructed retroactively. x402 newcomers, x402 new sellers, ecosystem growth, x402 entrants, agent economy momentum, who joined x402 Accepts payment on Base or Solana — either network works.

Universal flight status lookup by number and optional date: scheduled vs actual times, delay, gate, terminal, baggage carousel, aircraft type, route distance. 通用航班状态：按航班号+日期查计划与实际时刻、延误、登机口。日付指定フライト照会。Consulta de vuelo por numero y fecha. 항공편 번호와 날짜로 조회. Query: ?flight=AA100 or ?flight=AA100 date=2026-06-23 Accepts payment on Base or Solana — either network works.

x402 ecosystem health pulse from a proprietary multi-week dataset - total vs wash-filtered real listings, active entity count, spam ratio and 1d/7d trend with a health verdict - the real state of the x402 economy that public numbers hide, impossible to compute without historical tracking. x402 ecosystem, x402 health, x402 market, x402 stats, x402 growth, agent economy health Accepts payment on Base or Solana — either network works.

Hex to RGB converter, color converter, hex color parser, #FF0000 to rgb, 3-digit hex, 6-digit hex, web color decode. Convert hex color codes (#FF0000, FF0000, #F00) into RGB integer values and CSS rgb() string. Accepts payment on Base or Solana — either network works.

Timestamp converter, unix timestamp to date, ISO 8601 converter, epoch to date, date string to unix, time format converter, utc to local time, unix time, epoch milliseconds, human readable date. Convert between unix epoch (sec or ms), ISO 8601, and human-readable date strings. Auto-detect input format. Accepts payment on Base or Solana — either network works.