Hojun Lee

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.

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.

Real-time Korea vs global crypto price gap (Upbit/Bithumb vs Binance/Coinbase) for BTC, ETH, XRP, SOL + 50 alts. KRW/USD FX-adjusted. Telegram alerts on premium thresholds. Free public APIs. PPE $0.003/token.

Live positions and PnL for the top traders on Hyperliquid perp DEX. Filter by min position USD, fills lookback, PnL alert. Catch whale entries before the crowd. No API key. PPE $0.003/trader scanned.

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.

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.

One-stop crypto market overview: total market cap + BTC dominance, Fear & Greed index, top 5 coins (price/change/cap), BTC network stats (hashrate/halving), stablecoin supply, Deribit put/call ratio, and dYdX funding rates. 9 sources, no API key. $0.02/run.

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.

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.

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.

Pass any URL or text — get back a tight summary in your chosen style (TL;DR / bullets / executive / tweet) plus topic tags + sentiment. Article body auto-extracted via trafilatura. BYO Anthropic API key. $0.005 per summary, Claude tokens billed by Anthropic.

Bitcoin miner revenue tracker: block subsidy vs transaction fees, fee-to-reward ratio, and mining profitability trends. Detect miner selling pressure signals post-halving. No API key. $0.005/run.

Bitcoin mining pool tracker: hashrate distribution, block counts, and pool dominance (Nakamoto coefficient). Covers Foundry USA, AntPool, F2Pool and 14+ pools. Monitor mining centralization risk. No API key. $0.005/run.

Tracks Bitcoin mining pool hashrate share, block counts, and centralization risk (Nakamoto coefficient). Covers Foundry USA, AntPool, F2Pool and 14+ pools. No API key. $0.005/run.

Tracks peer-to-peer margin lending rates on Bitfinex for USD, USDT, BTC, ETH. Shows FRR (Flash Return Rate), annualized APR, best offers, and lending volume. No API key. $0.005/run.

Scrape posts from Bluesky social network via the public AT Protocol API. Search by keyword, hashtag, or user handle. No API key required. Outputs post text, author, likes, reposts, replies, images, URLs, and tags. PPE $0.003/post.