Brand Color Studio
Build consistent brand palettes, web storefront themes, banners, product images, business cards and marketing visual identities using The Color API. No login/API key. Generates color-wheel harmonies and conversions but does not independently certify WCAG accessibility; verify contrast before use.
Business Lookup
Search verified legal-entity reference data by company name and LEI from Global Legal Entity Identifier Foundation (GLEIF). Check legal names, registration jurisdiction/status and accounting parent-child relationships for B2B due diligence. No API key; not a general business directory and not proof of solvency or legitimacy; many small businesses have no LEI.
Earthquake Monitor
Search global earthquake observations and near-real-time GeoJSON feeds from the U.S. Geological Survey (USGS). No login or API key. Observations can be revised; not an emergency alert service.
Rocket Launch Calendar
Follow upcoming rocket launches, mission descriptions, launch sites, status and agencies using The Space Devs Launch Library 2. Public shared rate limits are low, so use for occasional on-demand lookup. Schedules often change; credit The Space Devs. No API key or login required for these public read tools. Source: https://thespacedevs.com/llapi
Fruit Nutrition & Food Learning
Compare approximate fruit calories, sugar, carbohydrate, protein and fat using Fruityvice public reference data. Educational information only; values are not personalized nutrition guidance or substitutes for product labels. No API key or login required for these public read tools. Source: https://www.fruityvice.com/doc/index.html
NIST CVE & Software Vulnerability Search
Look up official NIST NVD CVE records, severity metrics and software-platform identifiers for defensive patch research. Anonymous limits are low: use at least 6 seconds between requests. Records may be delayed or revised. No API key or login required for these public read tools. Source: https://nvd.nist.gov/developers/vulnerabilities
bioRxiv & medRxiv Preprint Watch
Browse recent biology and medical preprint metadata, abstracts and journal-publication links by date. Preprints are not peer-reviewed evidence or personal medical guidance. Credit authors and respect each preprint license. No API key or login required. Source: https://api.biorxiv.org/
AniList Anime & Manga Discovery
Find anime and manga, popularity, genres, release status and title metadata through the public AniList GraphQL API. No private watchlists, accounts or writes. Unofficial connector; credit AniList and respect its API terms. No API key or login required for these public read tools. Source: https://docs.anilist.co/
Yu-Gi-Oh Card & Set Guide
Search Yu-Gi-Oh cards, effects, archetypes, card sets and ban-list metadata using YGOPRODeck. Unofficial game reference. Do not repeatedly hotlink card images; cache provider results and respect Konami rights. Prices are indicative. No API key or login required for these public read tools. Source: https://ygoprodeck.com/api-guide/
Codewars Coding Practice
Explore public Codewars skill profiles, completed challenge metadata and kata descriptions for programming practice. Does not submit code or reveal private solutions. Attribute Codewars and kata authors. No API key or login required for these public read tools. Source: https://dev.codewars.com/
DEV Community Developer Articles
Find developer tutorials, articles and public author profiles on DEV Community. Return excerpts and original links; authors retain content rights. Do not republish full articles without permission. No API key or login required for these public read tools. Source: https://developers.forem.com/api/v1
PyPI Python Package Explorer
Inspect Python package releases, compatibility, dependencies, project links and release vulnerability metadata from official PyPI. Metadata only; no package installation or code execution. No API key or login required for these public read tools. Source: https://docs.pypi.org/api/json/