Firebase
Firebase is Google's app development platform — a backend-as-a-service (BaaS) suite for building, running, and growing web and mobile apps. It bundles managed backend products including Authentication, Cloud Firestore, Realtime Database, Cloud Storage, Cloud Functions, Hosting and App Hosting, Cloud Messaging (FCM), Remote Config, Crashlytics, Performance Monitoring, App Distribution, Test Lab, A/B Testing, App Check, Firebase AI Logic, and Extensions. Firebase exposes Google-hosted REST APIs (Management, Firestore, Realtime Database, FCM, Remote Config, Identity Toolkit) plus first-party client and Admin SDKs for Apple, Android, Web, Flutter, Unity, C++, Node.js, Python, Java, Go, and .NET, a cross-platform CLI (firebase-tools), a local Emulator Suite, and an official MCP server for agent-driven workflows.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Firebase the way a machine reads it — 9 machine-readable artifacts across 4 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Firebase scores 45.4/100 (developing), with a separate agent-readiness read of 28/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Firebase
Each block below is one kind of artifact we hold for Firebase. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 4
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Firebase Management API
REST API to programmatically create and manage Firebase projects, apps (Web, Android, Apple), and their configuration.
Cloud Firestore REST API
REST API for reading and writing documents, running queries, and managing indexes in Cloud Firestore.
Firebase Realtime Database REST API
REST API to read and write JSON data in the Firebase Realtime Database over HTTPS.
Firebase Cloud Messaging HTTP v1 API
REST API to send notification and data messages to devices via Firebase Cloud Messaging (FCM).
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
firebase-mcp.yml
MCP SERVERSecurity Posture 3
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Resources
Every other property we hold for Firebase — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 4
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 3
Pagination, idempotency, versioning, errors, and events
Build 4
SDKs, sample code, and the tooling you integrate with
Access & Security 8
Authentication, authorization, and security posture
Scroll within the panel for all 8 ·
Operate 5
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
← All providers · Data indexed from github.com/api-evangelist/firebase · machine-readable index on apis.io