Firebase website screenshot

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.

Firebase publishes 4 APIs on the APIs.io network. Tagged areas include Company, Backend as a Service, Application Development, Mobile, and Web.

Firebase’s developer surface includes documentation, API reference, getting-started guide, developer console, signup flow, pricing, engineering blog, and 27 more developer resources.

45.4/100 developing ▬ flat Agent 28/100 agent aware Full breakdown ↓
scored 2026-07-27 · rubric v0.5
AccessSelf serve
4 APIs 1 MCP Servers
CompanyBackend as a ServiceApplication DevelopmentMobileWebAuthenticationDatabaseCloud FunctionsMessagingGoogle

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 45.4/100 · developing
Contract Quality 0.0 / 25
Developer Ergonomics 16.1 / 20
Commercial Clarity 12.1 / 20
Operational Transparency 7.2 / 13
Governance 0.0 / 12
Discoverability 10.0 / 10
Agent readiness — 28/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 3 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/firebase: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 4

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 that expose these APIs to AI agents.

firebase-mcp.yml

MCP SERVER

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Firebase Authentication

apiKey/oauth2/bearer/serviceAccount/idToken · 5 schemes

SECURITY

Firebase Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Firebase Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Firebase Scopes

8 scopes · authorizationCode

8 scopes

SCOPES

Resources

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 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

Source (apis.yml)

apis.yml Raw ↑
aid: firebase
name: Firebase
description: 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.
url: https://raw.githubusercontent.com/api-evangelist/firebase/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- dcvc
- union-square-ventures
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
image: https://firebase.google.com/downloads/brand-guidelines/PNG/logo-logomark.png
tags:
- Company
- Backend as a Service
- Application Development
- Mobile
- Web
- Authentication
- Database
- Cloud Functions
- Messaging
- Google
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: Firebase Management API
  description: REST API to programmatically create and manage Firebase projects, apps (Web, Android, Apple), and their configuration.
  humanURL: https://firebase.google.com/docs/projects/api/reference/rest
  baseURL: https://firebase.googleapis.com
  properties:
  - type: APIReference
    url: https://firebase.google.com/docs/projects/api/reference/rest
- name: Cloud Firestore REST API
  description: REST API for reading and writing documents, running queries, and managing indexes in Cloud Firestore.
  humanURL: https://firebase.google.com/docs/firestore/use-rest-api
  baseURL: https://firestore.googleapis.com
  properties:
  - type: APIReference
    url: https://firebase.google.com/docs/reference/rest/firestore
- name: Firebase Realtime Database REST API
  description: REST API to read and write JSON data in the Firebase Realtime Database over HTTPS.
  humanURL: https://firebase.google.com/docs/reference/rest/database
  baseURL: https://firebaseio.com
  properties:
  - type: APIReference
    url: https://firebase.google.com/docs/reference/rest/database
- name: Firebase Cloud Messaging HTTP v1 API
  description: REST API to send notification and data messages to devices via Firebase Cloud Messaging (FCM).
  humanURL: https://firebase.google.com/docs/reference/fcm/rest
  baseURL: https://fcm.googleapis.com
  properties:
  - type: APIReference
    url: https://firebase.google.com/docs/reference/fcm/rest/v1/projects.messages
common:
- type: VulnerabilityDisclosure
  url: security/firebase-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/firebase-domain-security.yml
- type: Website
  url: https://firebase.google.com
- type: DeveloperPortal
  url: https://firebase.google.com
- type: Documentation
  url: https://firebase.google.com/docs
- type: APIReference
  url: https://firebase.google.com/docs/reference
- type: GettingStarted
  url: https://firebase.google.com/docs/guides
- type: Console
  url: https://console.firebase.google.com
- type: SignUp
  url: https://console.firebase.google.com
- type: Pricing
  url: https://firebase.google.com/pricing
- type: Blog
  url: https://firebase.blog
- type: Support
  url: https://firebase.google.com/support
- type: GitHubOrganization
  url: https://github.com/firebase
- type: StatusPage
  url: https://status.firebase.google.com
- type: ChangeLog
  url: https://firebase.google.com/support/releases
- type: TermsOfService
  url: https://firebase.google.com/terms
- type: PrivacyPolicy
  url: https://policies.google.com/privacy
- type: TrustCenter
  url: https://cloud.google.com/security/compliance
- type: Compliance
  url: https://cloud.google.com/security/compliance
- type: Deprecation
  url: https://cloud.google.com/terms/deprecation
- type: Security
  url: https://g.co/vrp
- type: Packages
  url: packages/firebase-packages.yml
- type: SDKs
  url: packages/firebase-packages.yml
- type: CLI
  url: cli/firebase-cli.yml
- type: MCPServer
  url: mcp/firebase-mcp.yml
- type: Authentication
  url: authentication/firebase-authentication.yml
- type: OAuthScopes
  url: scopes/firebase-scopes.yml
- type: Conventions
  url: conventions/firebase-conventions.yml
- type: Lifecycle
  url: lifecycle/firebase-lifecycle.yml
- type: ChangeLog
  url: changelog/firebase-changelog.yml
- type: Components
  url: components/firebase-components.yml
- type: WellKnown
  url: well-known/firebase-well-known.yml
- type: SecurityTxt
  url: well-known/firebase-security.txt
- type: LLMsTxt
  url: llms/firebase-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence