I Built 14 Free API Toolkits in 2 Weeks — Here's What Each One Does

Two weeks ago I started building Python toolkits for free APIs. 14 toolkits later, I can search 800M+ papers, 500K+ clinical trials, 8M+ patents, real-time stock prices, and weather data — all from my terminal. Here's the full collection: Academic Research (800M+ records) # Toolkit What It Does Records 1 OpenAlex Search academic papers across all disciplines 250M+ 2 Crossref DOI resolution + article metadata 150M+ 3 PubMed Biomedical literature search 36M+ 4 Semantic Scholar AI-powered paper search with TLDRs 200M+ 5 arXiv Preprints in physics, CS, math 2.4M+ 6 CORE Open access papers worldwide 300M+ 7 Unpaywall Find free legal PDFs of papers 30M+ Health & Biotech # Toolkit What It Does Records 8 ClinicalTrials.gov Search clinical trials worldwide 500K+ Business & Finance # Toolkit What It Does Data 9 USPTO Patents Search US patents by company/keyword 8M+ 10 Finance APIs Stocks, crypto, forex, economics Real-time Security # Toolkit What It Does APIs 11 Security Scanner Scan deps, URLs,