Hojun Lee

Parse any RSS or Atom feed into clean JSON. Supports news sites, blogs, podcasts, YouTube channels, Reddit, GitHub releases. Batch up to 100 feeds per run. $0.001/feed + $0.0005/item.

Track 175+ tokenized real-world asset protocols: BlackRock BUIDL, Ondo, Centrifuge, Paxos Gold, and more. TVL, daily/weekly changes, chain breakdown by subcategory (treasury, gold, credit, real estate). Free API. $0.002/protocol.

Parse SEC 13F quarterly filings for any institutional fund. Extracts holdings and computes quarter-over-quarter changes: new positions, increased, decreased, closed. No API key required.

Live SEC EDGAR latest filings feed: 10-K/10-Q/8-K/S-1/20-F/13F-HR/DEF-14A/424B5 and more. Filter by form type, CIK, or company name. Returns filer, CIK, role, filed date, accession #, document URL and size. Compliant SEC User-Agent. No API key.

Track corporate insider stock trades (Form 4 filings) from SEC EDGAR. Monitor executive and director buy/sell activity for any US public company. No API key required.

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.

Track Steam game metrics: concurrent players, all-time peak, review score, price, discount, release date, developer, publisher, genres, and tags. Fetch by game ID or search keyword using Steam's public API and store page. Monitor player trends and pricing for gaming market research.

Fetch posts from any Substack publication: title, author, subtitle, publication date, word count, estimated reading time, tags, and post URL. Supports multiple newsletters, keyword filtering, and date range. Uses Substack's public API. No auth needed.

Aggregate tech news from TechCrunch, The Verge, Ars Technica, Wired, Engadget, and Hacker News in one place. Supports keyword and category filtering, date range, and deduplication. Returns title, source, author, URL, published date, and summary.

Fetch bilateral trade data (exports/imports) from UN Comtrade's free Preview API. Query by reporter country, partner country, HS commodity code, and year. Ideal for tariff analysis, supply chain research, and geopolitical trade intelligence. No API key required.

Track US congressional legislation: bills, resolutions, and amendments from Congress.gov. Filter by chamber, sponsor, committee, status, topic, and date range. Returns sponsor, cosponsors, status, committee, summary, and vote data. Uses Congress.gov API.

Track AI agents on Virtuals Protocol (BASE chain). Monitor volume, price changes, mindshare, holder count, and tokenomics for 80,000+ AI agents. Filter by category, volume, and holders. No API key required.

Detect WAF presence and identify the vendor. Fingerprints 15+ WAFs: Cloudflare, Akamai, Imperva, Sucuri, Fastly, AWS WAF, Azure Front Door, F5, ModSecurity, Wordfence. Header, cookie, body & CNAME fingerprinting + attack-payload probe. 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.

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.

Track active severe weather alerts from NOAA National Weather Service: tornado warnings, hurricane watches, flood advisories, winter storms, and more. Filter by US state, county, event type, or severity. Uses NWS public API. No API key required.