Find the right API
Use search when the broad directory stops being enough. Filter by category, auth, CORS, signup friction, and result freshness until the shortlist becomes obvious.
Start with category and auth when you know the integration shape. Use free, signup, and CORS flags when you are trying to remove setup friction.
Sort by verification or response time when the final call is about reliability, not just category fit.
351 results in the full search view. Start narrowing from the rail when the field is still too broad.
IFTTT API
IFTTT (If This Then That) Platform lets brands integrate their services into IFTTT for users to cross-service automate via visual builder (Twitter post auto-cross-post to Slack, etc.).
Image Search Client
Bing Image Search runs image search over Bing's web-wide image index — by keyword, similar image, aspect ratio, or size filter.
Infura API
Infura is the veteran Ethereum node service provider (ConsenSys subsidiary) — JSON-RPC access, IPFS gateway, Filecoin, Polygon, and more.
Instagram API
Instagram Graph API provides Instagram business account management — post photos/videos, query media insights, reply to comments, Insights analytics. Requires Meta review.
IP geolocation API
AbstractAPI IP Geolocation API resolves IPv4/IPv6 to geographic info — country, city, timezone, ISP, currency, connection type (WiFi/mobile).
IUCN
IUCN Red List of Threatened Species provides data on species conservation status and classification.
Jikan
Unofficial MyAnimeList API.
Kitsu
Anime discovery platform.
Klarna Payments API V1
Klarna Payments API is Europe's leading Buy Now Pay Later (BNPL) service — installments, pay-in-30-days, flexible payment options that improve consumer conversion.
Kraken API
Kraken Exchange API provides programmatic access to Kraken crypto exchange — spot, futures, margin trading; known for stability (no hack since 2011 founding).
KuCoin API
KuCoin API is KuCoin exchange's programmatic interface, known for rich altcoin listings — particularly friendly to emerging small-cap coin trading.
LangSmith / LangChain API
LangSmith API is LangChain's LLM application observability platform — trace LLM calls, debug prompts, eval output quality, monitor production LLM apps.
Legal Entity Management API
Adyen Legal Entity Management API runs KYC/KYB workflows on Balance Platform — identity verification, document collection, compliance review.
Linear API
Linear API provides programmatic access to the modern project management tool loved by software engineering teams — issues, projects, cycles (sprints), teams.
LlamaIndex Cloud / LlamaParse API
LlamaIndex Cloud / LlamaParse API focuses on RAG data pipelines — complex PDF / document parsing, converting documents to LLM-ready structured data.
Local Search Client
Bing Local Business Search finds local businesses (restaurants, hotels, hospitals) by geographic query — returns business info, address, ratings.
MalDatabase
Provide malware datasets and threat intelligence feeds.
Management API
Adyen Management API manages merchant account configuration — webhooks, stores, users, API credentials, payment-method activation.
MangaDex
MangaDex is a manga database and community.
Mangapi
Translate manga pages from one language to another.
Mapbox API
Mapbox API provides highly customizable vector maps, geocoding, routing, navigation, satellite imagery — more customizable and cheaper than Google Maps.
Maps
TomTom Maps API offers global map tiles, vector map rendering, and style customization — a major alternative to Google Maps / Mapbox.
Marketing API
Run eBay Promoted Listings automation with ad campaigns, ad groups, suggested bids, suggested keywords, and bulk ad creation.
MeowFacts
Get random cat facts.