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.
FishWatch
Information and pictures about individual fish species.
Fly.io API
Fly.io is a global edge deployment platform — deploys your Docker containers to 30+ regions to run near users; ultra-low latency app backend.
Giphy API
GIPHY API provides data from the world's largest GIF search engine — keyword search, trending, stickers, random GIFs.
GitHub v3 REST API
GitHub REST API v3 — programmatic access to repos, issues, pull requests, Actions, Packages, and every other GitHub.com resource.
GitHub v3 REST API
GitHub Enterprise Cloud REST API is the enterprise version of GitHub.com API — organization management, SCIM SSO, audit log, Advanced Security integration.
Gitlab
GitLab API provides complete programmatic access to the GitLab platform — repositories, issues, merge requests, CI/CD pipelines, users, and groups.
Glassnode API
Glassnode API provides crypto on-chain data and market metrics — BTC/ETH holder distribution, exchange inflows/outflows, miner behavior, derivatives funding rates.
Gmail API
Gmail API lets apps read, send, and organize mail on behalf of a Google account — the core entry point for Workspace integrations.
Gmail Postmaster Tools API
Gmail Postmaster Tools API queries Gmail delivery quality for sender domains — spam rate, authentication (SPF/DKIM/DMARC) pass rate, reputation score.
Google Docs API
Google Docs API enables programmatic creation, reading, and editing of Google Docs — commonly used for report generation and template rendering.
Google Play Android Developer API
Google Play Developer API programmatically manages apps on Google Play — release versions, in-app purchases, subscription status queries, review replies.
Google Play Game Services
Google Play Games Services API provides backend services for Android/web games — achievements, leaderboards, cloud save, social features.
Google Safe Browsing
Google Link/Domain Flagging
Google Sheets API
Google Sheets API lets apps read and write Google Sheets — commonly used as a lightweight database or as a bridge to external systems.
Google Workspace Alert Center API
Google Workspace Alert Center API receives and manages Workspace security alerts — phishing emails, suspicious logins, data exfiltration, compliance violations.
GraphHopper Directions API
GraphHopper provides routing, matrix, isochrone, geocoding, map matching, clustering, and VRP endpoints in one Directions API.
Groq API
Groq API uses in-house LPU (Language Processing Unit) chips for open-source LLM inference — 10x faster than GPUs (Llama 70B at 500+ tokens/sec).
Helicone API
Helicone API is an LLM observability tool — one-line proxy integration to trace, monitor, cache, rate-limit any OpenAI / Anthropic call.
Home Assistant API
Home Assistant API is the local control interface for the open-source smart home platform — device states, automations, scenes, cross-vendor integrations (2500+ integrations).
HTTP Cat
Cat for every HTTP Status
HTTP Dog
Dogs for every HTTP response status code.
HuggingFace API
HuggingFace API provides open-source AI model hub (300k+ models), inference endpoints, datasets, Spaces app hosting — the center of open-source AI ecosystem.
IAM Service Account Credentials API
Google Cloud IAM Credentials API issues short-lived credentials — issue temporary access tokens, ID tokens, and JWTs for service accounts.
Identity and Access Management (IAM) API
Google Cloud IAM API manages access control for GCP resources — service accounts, roles, policies, conditional access.