Hojun Lee

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.

Given a domain, finds sitemap.xml / sitemap_index.xml (also via robots.txt), recursively expands sitemap indexes, returns one row per discovered URL with lastmod / changefreq / priority. SEO audits, crawl-target prep, content cataloging. $0.0001/URL + $0.01 site fee.

Tracks Solana liquid staking tokens (LSTs): APY, TVL, 30-day trends. Covers jitoSOL, mSOL, BNSOL, JUPSOL, DSOL, DZSOL and more. No API key. $0.005/run.

Real-time Solana network metrics: TPS (real vs vote), epoch progress, SOL supply/circulating, validator count, Nakamoto coefficient, price. Uses Solana public RPC + CoinGecko. No API key. $0.005/run.

Monitor SSL certificates for expiry, chain validity, and cipher suites. Discover subdomains via Certificate Transparency logs (crt.sh). Alerts for certificates expiring within N days. No API key required.

Track the full stablecoin ecosystem: supply, cross-chain distribution, peg health, market share, and inflow/outflow trends. Covers 400+ stablecoins via DefiLlama. No API key required. Monitor USDT/USDC dominance, spot emerging stablecoins, and detect depeg risks.

Track 400+ stablecoins: circulating supply, 24h/7d supply changes (minting/burning signals), peg price deviation in basis points, and mechanism breakdown (fiat/crypto/algorithmic). DefiLlama API, no auth required. $0.002/stablecoin.

Live circulating supply for every stablecoin broken down by chain (USDT, USDC, DAI, FDUSD, USDe, sUSD…) with 1d/7d/30d deltas. Detects large mint/burn events. Macro liquidity leading indicator. DefiLlama data, no API key.

Track trending questions, tag activity, and keyword search across Stack Overflow and 170+ Stack Exchange sites. Filter by tags, sort by votes/activity/hot/week/month, and optionally include top answers. Ideal for developer trend analysis and tech popularity tracking.

Track Stack Overflow questions by tag, keyword, or user. Returns question title, score, view count, answer count, accepted answer, tags, author, and creation date. Filter by date range, minimum score, or answered status. No API key required.

Screen stocks using FinViz filters. Filter by market cap, sector, P/E ratio, RSI, volume, country, EPS growth, dividend yield, and 50+ other criteria. Returns fundamentals, technical indicators, and performance data. No API key required.

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.

On-demand security audit for any ERC20 token. Combines honeypot.is (buy/sell simulation) and GoPlus (owner permissions, mint, blacklist, fees) into a single risk report. Critical pre-purchase check for memecoin traders. $0.02 per token.

Daily US Treasury par yield curve straight from treasury.gov: all tenors 1M–30Y, plus 2s10s / 3m10y / 5s30s spreads (bps) and inversion flags. Macro recession indicator. Configurable lookback window + Telegram alerts on inversion. No API key.

Given an EVM address, returns public identifiers: ENS reverse name, Etherscan public nametag (CEX deposit, MEV bot, DAO multisig, etc), contract verification + name, first-tx timestamp / account age, native balance. Pre-send safety check. $0.01 per address.

On-demand wallet analysis: full ERC20 transfer history, per-token positions, current USD value via DexScreener, top 10 holdings. Supports Ethereum, Base, Arbitrum, Optimism, Polygon, BSC. PPE $0.05 per wallet analyzed. No subscription.

Search and retrieve archived snapshots of any URL from Internet Archive's Wayback Machine. Supports date range filtering, deduplication, status code filtering, and optional HTML content fetching via CDX API. Ideal for web archive research, deleted content recovery, and SEO history analysis.

Pass a URL + JSON schema (or natural-language goal). Claude reads the page and returns a strict JSON object matching your schema. Product / news / hotel / real-estate / job-board extraction. BYO Anthropic API key. $0.01 per page.

Scrape Wikipedia articles via public MediaWiki API — no proxy, no auth. Modes: summary (extract + thumbnail), full_text, search, random, category. Supports 250+ language editions.

Fetch time-series economic data from the World Bank Open Data API. No API key required. Supports GDP, population, inflation, and 20,000+ indicators across 200+ countries. Filter by country, indicator, and year range.

Compares APY and TVL across yield-bearing stablecoins: sUSDe (Ethena), sUSDS (Sky), sDAI, sGHO, sfrxUSD vs benchmark USDC lending rates. Includes USDe peg health and spread-vs-USDC in basis points. No API key. $0.01/run.

Finds the best DeFi yield for a specific token (ETH, BTC, USDC, SOL, etc.) across 15,000+ pools. Risk classification: single-asset, LP, lending. APY trends and reward breakdown. No API key. $0.005/run.

Tracks live BTC/ETH/SOL options on Deribit (largest crypto options exchange). Implied volatility (IV) surface by expiry, put/call ratio, max pain price, top OI strikes, funding vs spot. No API key. Perfect for options traders. $0.005/run.

Convert a Twitter / X thread (URL or pasted text) into a clean Markdown article. Removes '1/N' noise, smooths transitions, adds optional H2 headings, preserves facts and quotes. BYO Anthropic API key. $0.01 per thread.