Categories
4,711 free APIs and 6,885 MCP servers, grouped into 53 topics. The source registries ship 137 overlapping category strings — including duplicates like “Finance”, “Financial” and “Finance & Fintech”, plus free-form buckets — so they are consolidated into the set below rather than published as competing page titles. See the methodology for the mapping rules.
MCP server categories
All 6,885 →- AI & Machine Learning APIs and MCP servers for inference, embeddings, agents and data science workflows. 1582
- Developer Tools Source control, CI, code execution, package tooling and everything that sits in a build pipeline. 773
- Search & Data Extraction Web search, scraping, crawling, aggregators and reference lookups for retrieval pipelines. 737
- Data & Databases Database engines, data platforms, file systems and the knowledge/memory stores agent tools read from. 674
- Finance & Payments Banking, market data, accounting, currency exchange and payment processing. 530
- Communication Email, SMS, voice, telephony and team messaging. 307
- Security & Identity Authentication, authorization, malware scanning, cryptography and identity providers. 272
- Automation & IoT Browser and OS automation, smart-home control, embedded devices and industrial IoT. 180
- Cloud & Hosting Cloud provider control planes, object storage, hosting and deployment APIs. 173
- Productivity & Collaboration Documents, calendars, project management, forms and workplace collaboration. 160
- Art, Design & Culture Image and asset libraries, typography, colour, photography and cultural collections. 145
- Marketing Campaigns, audiences, attribution, SEO and growth tooling. 122
- Business & Support CRM, customer support, HR, legal, real estate and back-office operations. 107
- Analytics & Monitoring Metrics, product analytics, log and uptime monitoring, validation and tracking. 103
- Text, Language & Speech Translation, dictionaries, sentiment, speech-to-text, text-to-speech and media conversion. 97
- Location & Geocoding Geocoding, reverse geocoding, maps, routing and place data. 92
- Transportation & Logistics Transit, flights, ride-hailing, vehicle data, shipping and delivery tracking. 82
- Entertainment & Media Music, film, TV, podcasts, games and news media. 79
- Science & Research Physics, chemistry, space, academic search and research datasets. 79
- Social Media Social networks, feeds, posting, community and creator platforms. 69
- Health & Medicine Clinical data, drug and terminology lookups, wellness and bioinformatics. 58
- Sports & Fitness Scores, schedules, standings, betting odds and fitness tracking. 48
- E-commerce Catalogues, carts, orders, shipping and retail platforms. 46
- Weather & Environment Forecasts, climate, air quality, agriculture and earth observation. 16
API categories
All 4,711 →- Cloud & Hosting Cloud provider control planes, object storage, hosting and deployment APIs. 980
- Developer Tools Source control, CI, code execution, package tooling and everything that sits in a build pipeline. 585
- Open Data & Government Public-sector datasets, statistics, patents and civic transparency feeds. 502
- Entertainment & Media Music, film, TV, podcasts, games and news media. 392
- Analytics & Monitoring Metrics, product analytics, log and uptime monitoring, validation and tracking. 333
- Finance & Payments Banking, market data, accounting, currency exchange and payment processing. 225
- Location & Geocoding Geocoding, reverse geocoding, maps, routing and place data. 156
- Transportation & Logistics Transit, flights, ride-hailing, vehicle data, shipping and delivery tracking. 139
- Communication Email, SMS, voice, telephony and team messaging. 132
- Art, Design & Culture Image and asset libraries, typography, colour, photography and cultural collections. 124
- Crypto & Blockchain Exchange data, wallets, on-chain queries and smart-contract tooling. 114
- Productivity & Collaboration Documents, calendars, project management, forms and workplace collaboration. 113
- Security & Identity Authentication, authorization, malware scanning, cryptography and identity providers. 104
- E-commerce Catalogues, carts, orders, shipping and retail platforms. 102
- Business & Support CRM, customer support, HR, legal, real estate and back-office operations. 98
- Weather & Environment Forecasts, climate, air quality, agriculture and earth observation. 77
- Social Media Social networks, feeds, posting, community and creator platforms. 74
- Sports & Fitness Scores, schedules, standings, betting odds and fitness tracking. 67
- AI & Machine Learning APIs and MCP servers for inference, embeddings, agents and data science workflows. 65
- Science & Research Physics, chemistry, space, academic search and research datasets. 63
- Text, Language & Speech Translation, dictionaries, sentiment, speech-to-text, text-to-speech and media conversion. 53
- Health & Medicine Clinical data, drug and terminology lookups, wellness and bioinformatics. 48
- Test Data & Mocking Fake users, placeholder images, mock endpoints and fixtures for development. 37
- Food & Drink Recipes, nutrition, restaurants, beverages and food products. 34
- Animals & Pets Breed data, shelters, wildlife and pet-care references. 27
- Search & Data Extraction Web search, scraping, crawling, aggregators and reference lookups for retrieval pipelines. 22
- URL Shorteners & Links Link shortening, redirects, QR codes and link analytics. 21
- Automation & IoT Browser and OS automation, smart-home control, embedded devices and industrial IoT. 17
- Marketing Campaigns, audiences, attribution, SEO and growth tooling. 7