Development APIs remove busywork from software teams: code execution sandboxes, screenshot services, proxy rotation, webhook testing, and CI helpers. Most are freemium with generous developer tiers, but watch for CORS restrictions — many are designed for backend use only. Health status matters more here than in most categories, since broken dev tools tend to stay broken.
| API | Pricing | Auth | CORS | Health | |
|---|---|---|---|---|---|
| Google Dataform API Official Google Dataform API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Dataproc Metastore API Official Google Dataproc Metastore API REST API (v1alpha) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Datastream API Official Google Datastream API REST API (v1alpha1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Developer Knowledge API Official Google Developer Knowledge API REST API (v1alpha) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Digital Asset Links API Official Google Digital Asset Links API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Docs API Official Google Google Docs API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google DoubleClick Bid Manager API Official Google DoubleClick Bid Manager API REST API (v2) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Enterprise License Manager API Official Google Enterprise License Manager API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Essential Contacts API Official Google Essential Contacts API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Eventarc API Official Google Eventarc API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Fact Check Tools API Official Google Fact Check Tools API REST API (v1alpha1) discovered via Google APIs Discovery Service. | Unknown | API Key | Yes | Profile | |
| Google Firebase Google's mobile application development platform that helps build, improve, and grow app | Freemium | API Key | No | Profile | |
| Google Firebase App Check API Official Google Firebase App Check API REST API (v1beta) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Firebase App Distribution API Official Google Firebase App Distribution API REST API (v1alpha) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Firebase App Hosting API Official Google Firebase App Hosting API REST API (v1beta) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Firebase Cloud Messaging API Official Google Firebase Cloud Messaging API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Firebase Cloud Messaging Data API Official Google Firebase Cloud Messaging Data API REST API (v1beta1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Firebase Crashlytics API Official Google Firebase Crashlytics API REST API (v1alpha) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Firebase Dynamic Links API Official Google Firebase Dynamic Links API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Firebase Hosting API Official Google Firebase Hosting API REST API (v1beta1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Firebase ML API Official Google Firebase ML API REST API (v1beta2) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Firebase Management API Official Google Firebase Management API REST API (v1beta1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Fonts Metadata for all families served by Google Fonts | Free | API Key | No | Profile | |
| Google Forms API Official Google Google Forms API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google GKE On-Prem API Official Google GKE On-Prem API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Groups Migration API Official Google Groups Migration API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Groups Settings API Official Google Groups Settings API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google HomeGraph API Official Google HomeGraph API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | OAuth | Yes | Profile | |
| Google Infrastructure Manager API Official Google Infrastructure Manager API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Keep API Official Google Google Keep API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Knowledge Graph Search API Official Google Knowledge Graph Search API REST API (v1) discovered via Google APIs Discovery Service. | Paid | API Key | Yes | Profile | |
| Google Lakehouse API Official Google Lakehouse API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Looker (Google Cloud core) API Official Google Looker (Google Cloud core) API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Managed Service for Apache Kafka API Official Google Managed Service for Apache Kafka API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Managed Service for Microsoft Active Directory API Official Google Managed Service for Microsoft Active Directory API REST API (v1alpha1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Manufacturer Center API Official Google Manufacturer Center API REST API (v1) discovered via Google APIs Discovery Service. | Paid | OAuth | Yes | Profile | |
| Google Meet API Official Google Google Meet API REST API (v2) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Merchant API Official Google Merchant API REST API (accounts_v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Migration Center API Official Google Migration Center API REST API (v1alpha1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google My Business Account Management API Official Google My Business Account Management API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google My Business Business Information API Official Google My Business Business Information API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google My Business Lodging API Official Google My Business Lodging API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google My Business Place Actions API Official Google My Business Place Actions API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google My Business Q&A API Official Google My Business Q&A API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google My Business Verifications API Official Google My Business Verifications API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google NetApp API Official Google NetApp API REST API (v1beta1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Network Management API Official Google Network Management API REST API (v1beta1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Network Services API Official Google Network Services API REST API (v1beta1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google OAuth2 API Official Google Google OAuth2 API REST API (v2) discovered via Google APIs Discovery Service. | Unknown | API Key | Yes | Profile | |
| Google OS Config API Official Google OS Config API REST API (v1alpha) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Organization Policy API Official Google Organization Policy API REST API (v2) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google PageSpeed Insights API Official Google PageSpeed Insights API REST API (v5) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Parallelstore API Official Google Parallelstore API REST API (v1beta) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google People API Official Google People API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Play Android Developer API Official Google Google Play Android Developer API REST API (v3) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Play Custom App Publishing API Official Google Google Play Custom App Publishing API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Play EMM API Official Google Google Play EMM API REST API (v1) discovered via Google APIs Discovery Service. | Free | API Key | Yes | Profile | |
| Google Play Games Services API Official Google Google Play Games Services API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Play Games Services Management API Official Google Google Play Games Services Management API REST API (v1management) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Play Games Services Publishing API Official Google Google Play Games Services Publishing API REST API (v1configuration) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Play Grouping API Official Google Google Play Grouping API REST API (v1alpha1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Play Integrity API Official Google Google Play Integrity API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Poly API Official Google Poly API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Pub/Sub Lite API Official Google Pub/Sub Lite API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Reader Revenue Subscription Linking API Official Google Reader Revenue Subscription Linking API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Real-time Bidding API Official Google Real-time Bidding API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Recommender API Official Google Recommender API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Search Console API Official Google Google Search Console API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Sensitive Data Protection (DLP) Official Google Sensitive Data Protection (DLP) REST API (v2) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Service Consumer Management API Official Google Service Consumer Management API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Service Control API Official Google Service Control API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Service Directory API Official Google Service Directory API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Service Management API Official Google Service Management API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Service Networking API Official Google Service Networking API REST API (v1beta) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Service Usage API Official Google Service Usage API REST API (v1beta1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Sheets API Official Google Google Sheets API REST API (v4) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Site Verification API Official Google Site Verification API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Slides API Official Google Google Slides API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Street View Publish API Official Google Street View Publish API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Tag Manager API Official Google Tag Manager API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Threat Intelligence API Official Google Threat Intelligence API REST API (v1beta) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Traffic Director API Official Google Traffic Director API REST API (v2) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google VM Migration API Official Google VM Migration API REST API (v1alpha1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google VMware Engine API Official Google VMware Engine API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Vault API Official Google Google Vault API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Web Content Publisher API Official Google Web Content Publisher API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Web Risk API Official Google Web Risk API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Web Search Indexing API Official Google Web Search Indexing API REST API (v3) discovered via Google APIs Discovery Service. | Paid | API Key | Yes | Profile | |
| Google Workflow Executions API Official Google Workflow Executions API REST API (v1beta) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Workflows API Official Google Workflows API REST API (v1beta) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google Workload Manager API Official Google Workload Manager API REST API (v1) discovered via Google APIs Discovery Service. | Free | Unknown | Yes | Profile | |
| Google Workspace Alert Center API Official Google Google Workspace Alert Center API REST API (v1beta1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Workspace Events API Official Google Google Workspace Events API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google Workspace Reseller API Official Google Google Workspace Reseller API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| Google reCAPTCHA Enterprise API Official Google reCAPTCHA Enterprise API REST API (v1) discovered via Google APIs Discovery Service. | Paid | Unknown | Yes | Profile | |
| Google versionhistory.googleapis.com API Official Google versionhistory.googleapis.com API REST API (v1) discovered via Google APIs Discovery Service. | Unknown | Unknown | Yes | Profile | |
| HTTP2.Pro Test endpoints for client and server HTTP/2 protocol support | Free | No | No | Profile | |
| HTTPie a free command-line HTTP client for the API era | Freemium | No | Yes | Profile | |
| Hasura GraphQL and REST API Engine with built in Authorization | Freemium | API Key | No | Profile | |
| Heroku REST API to programmatically create apps, provision add-ons and perform other task on Heroku | Freemium | OAuth | No | Profile |
Start with pricing and auth: free tiers and no-auth APIs are fastest to prototype with. Then check CORS if your app calls the API from the browser, and health before you commit — a great API that's been down for a week will block your launch. Each profile below shows all of these signals plus rate limits where documented.