Hojun Lee

Fetch the Hyperliquid on-chain perps leaderboard: top traders by PnL, ROI, or volume across day/week/month windows. Returns address, account size, P&L, ROI, and trading volume. All data is fully on-chain and free. No API key required.

Real-time perp funding rates across all major CEXs (Binance, OKX, Bybit, Bitget, Bingx) + Hyperliquid in one row per symbol. Hourly + daily + annualized APR. Identify arbitrage opportunities. Free public APIs. PPE $0.002/symbol.

Scans CBOE free delayed-quote API for unusual options: volume/OI ratio > threshold. Covers 80+ S&P500 + major ETFs by default. Outputs strike, expiry, DTE, volume, OI, ratio, IV%, notional, moneyness, greeks. Filter by calls/puts, IV, DTE. No API key required.

Search the web using DuckDuckGo — no API key required. Returns clean JSON: title, URL, snippet, domain, rank. Perfect for AI agents and LLM pipelines that need real-time web search. Supports web and news search.

Real-time crypto market data exposed as an MCP (Model Context Protocol) server. AI agents connect directly and call tools: kimchi premium, DeFi yields, ETF flows, Fear & Greed index, funding rates, market overview. No API keys required. Runs as a persistent HTTP server.

Aggregate cryptocurrency news from CoinDesk, Cointelegraph, Decrypt, CryptoSlate, and The Block RSS feeds. Filter by keyword, coin symbol, or source. Returns title, summary, author, published date, source, and full article URL. No API key required.

Check if domains or emails appear in known data breaches. Uses Have I Been Pwned database. Returns breach names, dates, data types exposed (passwords, emails, phone numbers). Monitor for new breaches affecting your organization.

Check domain availability, WHOIS registration data, and DNS records (A, AAAA, MX, NS, TXT, CNAME) for any list of domains. Identify expired domains, find nameservers, detect mail providers, and analyze domain infrastructure. Uses public DNS APIs — no API key required.

Historical 8h funding rates from Hyperliquid for any perp coin: 7d/30d averages (annualized), cumulative funding cost, trend direction (rising/stable/falling), and carry signal. Great for funding arbitrage and long-term cost estimation. $0.003/coin.

Track Spotify podcast shows and episodes: subscriber estimates, episode count, release frequency, ratings, categories, and language. Search by keyword or fetch specific show IDs using Spotify's public web API. No Spotify account required. Returns structured data for podcast market research.

Extract structured metadata from any URL: title, description, OpenGraph (og:title/image/type/url/site_name), Twitter Cards, canonical, favicon, JSON-LD schema.org, language, h1 count, images, links. Used for link previews, SEO audits, content cataloging. $0.005/URL.

Track trending and top-downloaded Hugging Face models, datasets, and Spaces. Filter by task (text-generation, image-classification), author/org (meta-llama, microsoft), or keyword. Returns downloads, likes, trending score, license, tags, gated status. Optional detail enrichment. No API key needed.

Bitcoin valuation and network health metrics: NVT ratio (under/fair/overvalued signal), 24h transaction volume, hash rate (EH/s), miner fee ratio, block retarget countdown. Combines blockchain.info, mempool.space, and CoinGecko. No API key. $0.005/run.

Scan funding rates across 6 exchanges (Binance, Bybit, OKX, Gate.io, Bitget, Hyperliquid) for any token and identify cross-exchange arbitrage opportunities. Returns normalized hourly rates, annualized APR, max spread between exchanges, and ranked arbitrage pairs. No API key required.

On-demand health factor + collateral / debt / LTV for any wallet's Aave V3 positions across Ethereum, Arbitrum, Base, Optimism, Polygon, Avalanche. Direct on-chain via Etherscan eth_call. Telegram alerts on HF below threshold. $0.02 per wallet checked.

Screen tokens across all DEXs using DexScreener. Filter by volume, market cap, liquidity, price change, token age, and transaction count. Find breakout tokens, new launches with traction, or momentum plays. No API key required. $0.001/token.

Audit HTTP security headers for any URL: CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy. Returns a 0-100 score + letter grade + actionable findings. $0.005 per URL.

Fetch top N holders for any ERC20 token: balance, % of supply, wallet age. Detect whale concentration, insider holdings, and supply distribution risk before trading. Supports any Ethereum token address. Ethplorer data. PPE $0.001/holder.

Track the AI/Agent crypto token ecosystem. Returns market cap, volume, price changes for AI-category tokens across multiple CoinGecko categories. Includes sector summary and top movers.

Ranks 488 altcoin/BTC pairs by 24h performance vs Bitcoin using Binance data: top gainers, top losers, volume leaders, market breadth % (altseason signal). No API key. $0.005/run flat.

Computes the Altcoin Season Index: what % of top-50 coins outperformed BTC over 90 days. Returns per-coin comparison, beat/miss flag, and aggregate score. Score ≥75 = altcoin season, ≤25 = BTC season. No API key required.

Altcoin Season Index tracker: what % of top-50 altcoins outperformed BTC over 90 days. Per-coin performance, rank, and aggregate altcoin vs Bitcoin score (0-100). Track BTC dominance shifts and altcoin rotation. No API key required.

Track app rankings by keyword across Apple App Store and Google Play Store. Find competitors, discover keyword opportunities, and monitor your app's rank. Essential for App Store Optimization (ASO).

Track iOS App Store rankings, reviews, and metadata using Apple's iTunes Search API. Search by keyword, category, or app ID. Returns ratings, review count, price, developer, screenshots, version, and size. Supports top charts and keyword search.