Hojun Lee

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.

Scrape Reddit posts and comments from any subreddit, search query, or user profile. Uses Reddit public JSON API — no API key required. Sort by hot/new/top/rising. Optional top comments. PPE $0.003/post.

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.

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.

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.

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.

Tracks Bitcoin miner block revenue: subsidy vs transaction fees, fee-to-reward ratio trend. Essential for post-halving miner economics. No API key. $0.005/run.

Fetch global internet traffic trends, DNS query stats, BGP routing data, and HTTP protocol adoption from Cloudflare Radar's public API. Track top ASNs, country-level traffic patterns, outage detection, and Layer 3/4 DDoS attack trends. No API key required for basic endpoints.

Fetch global crypto market data: total market cap, BTC/ETH dominance, 24h trading volume, DeFi market cap, active cryptocurrencies count, market sentiment, and Fear & Greed index. Uses public CoinMarketCap data. No API key required.

Track public company Bitcoin and Ethereum holdings. 179 BTC companies + 32 ETH companies ranked by holdings. Unrealized P&L, avg entry price, % of supply. No API key required.

Real-time staking APY, inflation rate, bonded %, and unbonding period for 13 major Cosmos SDK chains (ATOM, OSMO, TIA, INJ, DYDX, AKASH, STARS, KAVA, AXL, SCRT, STRIDE, EVMOS, XPRT). Public cosmos.directory REST API, no key. $0.005/chain.

Screens all 738 CoinGecko categories by market cap and 24h performance. Find trending narratives, best/worst sectors, emerging categories. No API key. $0.005/run.

Computes Pearson correlation matrix of daily returns for crypto assets. Identify highly correlated assets (same risk) or low-correlation pairs (diversification). CoinGecko free API, 7/30/90 day windows. No API key. $0.003/pair.

Simulate dollar-cost averaging for any CoinGecko-listed crypto over the past 1-365 days. Daily/weekly/biweekly/monthly purchase frequency. Shows per-purchase breakdown, total P&L, avg cost, vs lump-sum comparison. Free CoinGecko API, no key needed. $0.002/run.

Tracks 20+ crypto derivatives exchanges: open interest, 24h volume, market share %, perpetual/futures pair counts. Shows which exchanges dominate crypto futures. No API key. $0.005/run.