# Reqistry > API intelligence platform: discover, compare, and monitor 1,500+ APIs with trust signals (pricing, auth, CORS, rate limits, live health, trust scores). Data refreshes continuously via automated health checks. ## Catalog 73 categories, 3548 APIs. Each category page lists every API; each API profile shows trust signals and links. - [Travel APIs (16)](https://reqistry.dev/categories/travel): Flights, hotels, itineraries, tourism, destinations, and travel booking APIs. - [Uncategorized APIs (0)](https://reqistry.dev/categories/uncategorized): - [Animals APIs (25)](https://reqistry.dev/categories/animals): Animal species, wildlife, pets, biodiversity, images, facts, and zoological data APIs. - [Notification Infrastructure APIs (3)](https://reqistry.dev/categories/notification-infrastructure): Transactional notifications, multichannel messaging, push delivery, in-app inboxes, and preference workflow APIs. - [Maps & Location APIs (108)](https://reqistry.dev/categories/maps-and-location): Maps, geocoding, routing, places, navigation, geospatial data, and location intelligence APIs. - [Document AI APIs (6)](https://reqistry.dev/categories/document-ai): Document parsing, OCR, PDF extraction, data capture, invoice processing, and document ingestion APIs. - [DevOps & Deployment APIs (16)](https://reqistry.dev/categories/devops-and-deployment): CI/CD, deployment, hosting, release automation, infrastructure operations, and platform engineering APIs. - [Commerce APIs (4)](https://reqistry.dev/categories/commerce): E-commerce storefronts, product catalogs, merchants, orders, subscriptions, and seller platform APIs. - [Browser Automation APIs (5)](https://reqistry.dev/categories/browser-automation): Headless browsers, hosted browser sessions, screenshots, PDFs, scraping, and web automation APIs. - [Legal APIs (10)](https://reqistry.dev/categories/legal): Legal research, legislation, courts, contracts, compliance, and regulatory data APIs. - [Education APIs (11)](https://reqistry.dev/categories/education): Learning platforms, courses, schools, academic records, assessments, and educational content APIs. - [Databases APIs (54)](https://reqistry.dev/categories/databases): Database platforms, managed data stores, SQL, NoSQL, query services, and database administration APIs. - [Agent Tools APIs (5)](https://reqistry.dev/categories/agent-tools): AI agent orchestration, tool calling, memory, browser use, voice, and workflow execution APIs. - [Cloud Infrastructure APIs (452)](https://reqistry.dev/categories/cloud-infrastructure): Cloud compute, networking, DNS, containers, resource management, and infrastructure operations APIs. - [LLM Gateways APIs (8)](https://reqistry.dev/categories/llm-gateways): LLM routing, AI gateways, model proxies, observability, fallbacks, and inference cost control APIs. - [Web Scraping APIs (5)](https://reqistry.dev/categories/web-scraping): Web scraping, crawling, proxy fetching, browser extraction, and public web data APIs. - [Internet of Things APIs (15)](https://reqistry.dev/categories/internet-of-things): Connected devices, sensors, telemetry, home automation, and industrial IoT APIs. - [Observability APIs (64)](https://reqistry.dev/categories/observability): Application monitoring, logs, metrics, traces, incidents, uptime, and reliability APIs. - [Search & Discovery APIs (26)](https://reqistry.dev/categories/search-discovery): Web, site, product, document, semantic search, indexing, and recommendation APIs. - [Payments APIs (62)](https://reqistry.dev/categories/payments): Payment processing, billing, invoicing, subscriptions, payouts, and financial transaction APIs. - [Vector Databases APIs (3)](https://reqistry.dev/categories/vector-databases): Vector databases, embedding indexes, semantic search, retrieval, and RAG storage APIs. - [Real Estate APIs (2)](https://reqistry.dev/categories/real-estate): Property listings, valuations, parcels, mortgages, rentals, and housing market APIs. - [Messaging APIs (65)](https://reqistry.dev/categories/messaging): SMS, chat, push messaging, notifications, and programmable communication APIs. - [Package Registries APIs (9)](https://reqistry.dev/categories/package-registries): Package, container, plugin, extension, model, and software artifact registry APIs. - [Anime APIs (25)](https://reqistry.dev/categories/anime): Anime titles, manga, characters, episodes, studios, ratings, and recommendation APIs. - [Threat Intelligence APIs (18)](https://reqistry.dev/categories/threat-intelligence): Malware analysis, phishing detection, IOC enrichment, file scanning, and reputation intelligence APIs. - [Art & Design APIs (30)](https://reqistry.dev/categories/art-design): Artwork, design assets, colors, fonts, illustrations, graphics, and creative tooling APIs. - [Authentication & Authorization APIs (20)](https://reqistry.dev/categories/authentication-authorization): Login, identity verification, OAuth, permissions, access control, and authorization APIs. - [Blockchain APIs (24)](https://reqistry.dev/categories/blockchain): Blockchain networks, smart contracts, transactions, wallets, tokens, and decentralized application APIs. - [Books APIs (36)](https://reqistry.dev/categories/books): Books, authors, ISBN records, libraries, reviews, catalogs, and reading recommendation APIs. - [Business APIs (71)](https://reqistry.dev/categories/business): Company data, CRM, accounting, operations, sales, procurement, and business intelligence APIs. - [Calendar APIs (25)](https://reqistry.dev/categories/calendar): Calendars, events, scheduling, availability, reminders, and appointment booking APIs. - [Storage & Files APIs (82)](https://reqistry.dev/categories/storage-and-files): Cloud storage, file uploads, sharing, synchronization, backups, and file management APIs. - [Cryptocurrency APIs (51)](https://reqistry.dev/categories/cryptocurrency): Cryptocurrency prices, exchanges, wallets, blockchain assets, market data, and trading APIs. - [Currency Exchange APIs (33)](https://reqistry.dev/categories/currency-exchange): Foreign exchange rates, currency conversion, historical pricing, and forex market data APIs. - [Data Validation APIs (17)](https://reqistry.dev/categories/data-validation): Email, phone, address, identity, schema, and business data validation APIs. - [Development APIs (299)](https://reqistry.dev/categories/development): Developer tools for code, repositories, testing, debugging, documentation, and software automation APIs. - [Dictionaries APIs (16)](https://reqistry.dev/categories/dictionaries): Dictionary definitions, translations, synonyms, pronunciation, spelling, and linguistic reference APIs. - [Documents & Productivity APIs (78)](https://reqistry.dev/categories/documents-productivity): Documents, spreadsheets, presentations, collaboration, e-signatures, and workplace productivity APIs. - [Email APIs (80)](https://reqistry.dev/categories/email): Transactional email, marketing campaigns, inbox access, deliverability, templates, and email validation APIs. - [Entertainment APIs (47)](https://reqistry.dev/categories/entertainment): Movies, television, celebrities, streaming catalogs, ratings, and entertainment media APIs. - [Environment APIs (29)](https://reqistry.dev/categories/environment): Air quality, emissions, climate, pollution, conservation, and environmental monitoring APIs. - [Events APIs (5)](https://reqistry.dev/categories/events): Event discovery, ticketing, venues, conferences, meetups, and attendee management APIs. - [Finance APIs (78)](https://reqistry.dev/categories/finance): Banking, investments, stocks, market data, accounting, credit, and personal finance APIs. - [Food & Drink APIs (33)](https://reqistry.dev/categories/food-drink): Recipes, ingredients, nutrition, restaurants, beverages, menus, and food delivery APIs. - [Games & Comics APIs (100)](https://reqistry.dev/categories/games-comics): Video games, comics, characters, releases, ratings, achievements, and player data APIs. - [Government APIs (95)](https://reqistry.dev/categories/government): Public records, legislation, elections, agencies, institutions, and civic data APIs. - [Health APIs (50)](https://reqistry.dev/categories/health): Healthcare, clinical records, medical information, wellness, fitness metrics, and patient data APIs. - [Jobs APIs (39)](https://reqistry.dev/categories/jobs): Job listings, recruitment, employers, salaries, skills, hiring, and career data APIs. - [Machine Learning & MLOps APIs (26)](https://reqistry.dev/categories/machine-learning-and-mlops): Model training, inference, datasets, deployment, experiment tracking, and machine learning operations APIs. - [Music APIs (42)](https://reqistry.dev/categories/music): Music discovery, artists, albums, streaming, metadata, lyrics, playlists, and audio APIs. - [News APIs (33)](https://reqistry.dev/categories/news): Headlines, articles, publishers, breaking news, media monitoring, and journalism data APIs. - [Open Data APIs (173)](https://reqistry.dev/categories/open-data): Public datasets, government records, statistics, research, transparency, and civic data APIs. - [Open Source Ecosystem APIs (11)](https://reqistry.dev/categories/open-source-ecosystem): Open-source repositories, maintainers, releases, contributors, issues, licenses, and ecosystem metadata APIs. - [Personality APIs (25)](https://reqistry.dev/categories/personality): Personality assessments, behavioral analysis, psychological traits, profiling, and psychometric insight APIs. - [Telephony & SMS APIs (16)](https://reqistry.dev/categories/telephony-and-sms): Voice calling, SMS, phone validation, carrier lookup, telecom, and telephony infrastructure APIs. - [Photography APIs (31)](https://reqistry.dev/categories/photography): Photos, cameras, EXIF metadata, image libraries, editing, galleries, and visual content APIs. - [Podcasts APIs (5)](https://reqistry.dev/categories/podcasts): Podcast discovery, episodes, directories, RSS feeds, shows, streaming, and audio metadata APIs. - [Code Execution & Compilers APIs (11)](https://reqistry.dev/categories/code-execution-and-compilers): Code execution, compilers, online judges, snippets, language tooling, and developer runtime APIs. - [Science & Math APIs (46)](https://reqistry.dev/categories/science-math): Scientific data, mathematics, astronomy, chemistry, physics, computation, and research dataset APIs. - [Security APIs (134)](https://reqistry.dev/categories/security): Vulnerability scanning, threat detection, IP reputation, security monitoring, authentication, and protection APIs. - [Shopping APIs (44)](https://reqistry.dev/categories/shopping): Products, prices, carts, orders, retail inventory, marketplaces, and e-commerce APIs. - [Social APIs (52)](https://reqistry.dev/categories/social): Social networks, profiles, communities, posts, messaging, moderation, and engagement APIs. - [Sports & Fitness APIs (49)](https://reqistry.dev/categories/sports-fitness): Sports scores, leagues, teams, athletes, workouts, fitness tracking, and activity data APIs. - [Test Data APIs (32)](https://reqistry.dev/categories/test-data): Mock, synthetic, sample, fixture, identity, and randomized test data generation APIs. - [Text Analysis APIs (46)](https://reqistry.dev/categories/text-analysis): Natural language processing, sentiment, entity extraction, classification, parsing, and language understanding APIs. - [Logistics & Shipment Tracking APIs (16)](https://reqistry.dev/categories/logistics-and-shipment-tracking): Shipment, parcel, freight, delivery, asset, carrier, and logistics tracking APIs. - [Transportation APIs (74)](https://reqistry.dev/categories/transportation): Public transit, routes, schedules, mobility, traffic, rail, and transportation data APIs. - [URL Shorteners APIs (21)](https://reqistry.dev/categories/url-shorteners): Link shortening, branded redirects, click tracking, analytics, and URL management APIs. - [Vehicle APIs (19)](https://reqistry.dev/categories/vehicle): Vehicle specifications, registration, valuation, maintenance, traffic, and automotive data APIs. - [Video APIs (78)](https://reqistry.dev/categories/video): Video hosting, streaming, editing, transcoding, playback, analytics, and media management APIs. - [Weather APIs (44)](https://reqistry.dev/categories/weather): Weather forecasts, temperature, precipitation, climate, alerts, radar, and atmospheric condition APIs. - [AI APIs (165)](https://reqistry.dev/categories/ai): Artificial intelligence generation, reasoning, assistants, multimodal models, automation, and agent APIs. ## How to use - Browse: https://reqistry.dev/categories - Search: https://reqistry.dev/search?q=weather - Compare two APIs: https://reqistry.dev/compare/open-meteo-vs-openweather - API detail example: https://reqistry.dev/apis/open-meteo - Change feed (health/pricing/trust events): https://reqistry.dev/changelog ## Machine-readable API The same data is available as JSON: - `GET /v1/categories` — all categories with apiCount - `GET /v1/categories/{slug}/apis?limit=100&page=1` — paginated APIs in a category - `GET /v1/apis/{slug}` — full API profile incl. health + trust score - `GET /search?q={query}&pricing=free&cors=yes` — filtered search - `GET /v1/apis/compare?ids=slugA,slugB` — side-by-side comparison Base URL: https://api.reqistry.gwhyyy.com (no auth required for reads).