Google Firebase App Check API
Browse all Google APIs40
AI ReadinessFoundational (D-)40/100
Official vendor OpenAPI document · agent-readySecurityThreat Detectionoauth227 EndpointsREST
For Agents
Exchange platform attestation tokens for Firebase App Check tokens and manage App Check provider configurations so an agent can lock backend resources to genuine app traffic.
Use for: Exchange a Play Integrity token for a Firebase App Check token, Generate an App Attest challenge for an iOS client, Configure App Check enforcement for the Firestore service, List all App Check debug tokens for an Android app
Not supported: Does not authenticate end users, scan code for vulnerabilities, or replace Firebase Security Rules - use for attesting app authenticity and enforcing App Check on Firebase services only.
The Firebase App Check API helps protect backend resources from abuse such as billing fraud and phishing by attesting that traffic originates from your genuine app. It supports multiple attestation providers including App Attest, Play Integrity, DeviceCheck, reCAPTCHA Enterprise, reCAPTCHA v3, and SafetyNet, exchanging provider tokens for short-lived App Check tokens. Use it to enforce app authenticity for Firestore, Realtime Database, Cloud Functions, and other Firebase backends.
Install Jentic One Beta
Connect the Firebase App Check API to your agent
Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Firebase App Check API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.
Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.
1
Step 1: Jentic One Host machine
# On the machine that will host your Jentic One instance:
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fgoogleapis.com%2Ffirebaseappcheck" | sh2
Step 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fgoogleapis.com%2Ffirebaseappcheck" | sh
jentic register # connects your agent to your Jentic One instanceJentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.
Capabilities
What an agent can do with Firebase App Check API.
Exchange Apple App Attest, DeviceCheck, and Play Integrity tokens for App Check tokens
Verify reCAPTCHA Enterprise and reCAPTCHA v3 site tokens against an App Check resource
Generate App Attest challenges and Play Integrity challenges for client attestation flows
Configure per-service App Check enforcement for Firestore, Realtime Database, and Storage
Issue debug tokens for App Check during local development and CI testing
Use Cases
Patterns agents use Firebase App Check API for, with concrete tasks.
★ Backend Abuse Protection for Firestore
Lock Firestore reads and writes to traffic that has been attested by App Check, blocking direct API hits from emulators, scraped credentials, or modified app binaries. The API exposes service config endpoints under projects/{project}/services/{service} so enforcement can be toggled to UNENFORCED, AUDIT, or ENFORCED per service. Rolling out enforcement typically takes a release cycle to gather audit data before turning on full enforcement.
Call PATCH /v1/{+name} on projects/PROJECT/services/firestore.googleapis.com with enforcementMode=ENFORCED and confirm via GET /v1/{+name} that the new mode is set.
iOS App Attest Token Exchange
Exchange an Apple App Attest assertion or attestation produced on the device for a short-lived Firebase App Check token used in subsequent Firebase requests. The flow uses generateAppAttestChallenge to issue a challenge and exchangeAppAttestAttestation or exchangeAppAttestAssertion to redeem it. This proves the request came from a genuine, unmodified iOS app.
Call POST /v1/{+app}:generateAppAttestChallenge for an iOS app, then POST /v1/{+app}:exchangeAppAttestAttestation with the device-signed attestation and store the returned App Check token.
Android Play Integrity Verification
Validate Android client requests by exchanging a Play Integrity token from the Google Play Integrity API for a Firebase App Check token. The exchangePlayIntegrityToken endpoint lets backends trust that requests come from a Play-distributed binary running on a non-tampered device. This is the recommended attestation provider for current production Android apps.
Call POST /v1/{+app}:exchangePlayIntegrityToken with playIntegrityToken set to the JWS produced by Play Integrity for the Android app and store the returned token in the request header X-Firebase-AppCheck.
Agent-Managed App Check Rollout via Jentic
An AI agent connected to Jentic can configure and gradually roll out App Check enforcement across Firebase services in response to a security review. Jentic exposes the 27 App Check endpoints, the agent loads service config and debug-token operations, and the OAuth 2.0 flow stays inside your Jentic One instance rather than the agent context.
Through Jentic, search for configure firebase app check enforcement, load the services.patch operation, and execute it with name=projects/PROJECT/services/firebasestorage.googleapis.com and enforcementMode=AUDIT.
Key Endpoints
27 endpoints — the firebase app check api helps protect backend resources from abuse such as billing fraud and phishing by attesting that traffic originates from your genuine app.
METHOD
PATH
DESCRIPTION
POST
/v1/{+app}:exchangePlayIntegrityToken
Exchange a Play Integrity token for an App Check token
POST
/v1/{+app}:exchangeAppAttestAttestation
Exchange an Apple App Attest attestation for an App Check token
POST
/v1/{+app}:exchangeRecaptchaEnterpriseToken
Exchange a reCAPTCHA Enterprise token for an App Check token
POST
/v1/{+app}:generateAppAttestChallenge
Generate a challenge for the App Attest flow
POST
/v1/{+app}:exchangeDebugToken
Exchange a debug token for an App Check token
POST
/v1/{+app}:exchangeCustomToken
Exchange a custom token for an App Check token
POST
/v1/{+app}:exchangePlayIntegrityToken
Exchange a Play Integrity token for an App Check token
POST
/v1/{+app}:exchangeAppAttestAttestation
Exchange an Apple App Attest attestation for an App Check token
POST
/v1/{+app}:exchangeRecaptchaEnterpriseToken
Exchange a reCAPTCHA Enterprise token for an App Check token
POST
/v1/{+app}:generateAppAttestChallenge
Generate a challenge for the App Attest flow
POST
/v1/{+app}:exchangeDebugToken
Exchange a debug token for an App Check token
POST
/v1/{+app}:exchangeCustomToken
Exchange a custom token for an App Check token
Jentic AI Readiness Score
This API is usable in Jentic One now. Its AI-readiness score against Jentic's framework shows where it stands today and where improvements would make it even easier for agents to use.
F
Firebase App Check API
- Foundational (D-)40/100
68
Foundational Compliance56
Developer Experience & Jentic Compatibility17
AI-Readiness & Agent Experience94
Agent Usability63
Security63
AI DiscoverabilityPowered by JenticScoring Framework 1.0.0 | Scoring Engine 0.4.0
Show dimension breakdown
68
Foundational Compliance
Base layer of spec validity and structural soundness.
Grade: B+Signals: 4
71%
Lint Results
Aggregated quality score from linter diagnostics, weighted by severity.
100%
Resolution Completeness
Percentage of `$ref` references that resolve successfully.
0%
Specification Validity
Checks whether the API description parses successfully and conforms to its declared specification (e.g., OpenAPI).
100%
Structural Integrity
Structural correctness score based on schema issues using logarithmic dampening.
56
Developer Experience & Jentic Compatibility
Clarity, completeness, and ingestion readiness for developers and tooling.
Grade: CSignals: 4
0%
Example Density
How richly the API is illustrated with examples.
100%
Example Validity
Percentage of examples that conform to their schemas.
25%
Response Coverage
Percentage of operations with complete response definitions (success, client error, server error).
100%
Tooling Readiness
Health of API ingestion, bundling, and resolution within Jentic pipelines.
17
AI-Readiness & Agent Experience
Semantic breadth, depth, and agent comprehension for AI systems.
Grade: FSignals: 4
70%
Description Coverage
Coverage of descriptions across API elements.
0%
Error Standardization
Coverage of RFC 9457 Problem Details for error responses.
0%
OperationId Quality
Coverage, uniqueness, and casing consistency of operationIds for AI inference.
0%
Summary Coverage
Coverage of summaries across operations/tags/info.
94
Agent Usability
Functional utility, complexity comfort, and AI orchestration readiness.
Grade: A+Signals: 1
94%
Complexity Comfort
Agent comfort level based on API operational and structural complexity.
63
Security
Trust, risk posture, and security compliance.
Grade: B-Signals: 1
62%
Authentication Strength
Average quality of security schemes based on authentication method strength (weakest link for OAuth2).
63
AI Discoverability
Findability, semantic richness, and reasoning readiness.
Grade: BSignals: 1
63%
Descriptive Richness
Clarity and depth of descriptions across API elements.
Score it yourself
Every API in the directory is allowlisted, so you can re-score it with no key required.
npx @jentic/api-scorecard-cli score <openapi-url>Why Jentic?
What agents get from Jentic-routed access to this vendor.
Setup
Wiring the Firebase App Check API by hand means standing up Google OAuth 2.0 with a service account for management calls while keeping platform attestation tokens client-side, and reading Google's spec to map each token-exchange operation. Through Jentic you install once, import the Firebase App Check API from the API Directory, store the service-account credential once, and your agent calls it.
Permission scoping
App Check puts the app resource in the URL path (/v1/{app}:exchangePlayIntegrityToken, /v1/{app}:generateAppAttestChallenge), so a rule can pin your agent to one app and nothing else. You choose the operations it may call, so token exchanges beyond the ones you name are not included unless you add them.
Credential isolation
Your Google service-account credential is stored once, encrypted, by your own Jentic One instance and injected at execution time. It never enters the agent's prompt, logs, or context.
Intent-based discovery
Agents search Jentic by intent such as 'exchange a Play Integrity token' or 'generate an App Attest challenge', and Jentic returns the matching Firebase App Check operation with its input schema so the agent calls the right endpoint without browsing the reference docs.
Related APIs
Alternatives and complements available in the Jentic catalogue.
FAQs
Specific to using Firebase App Check API through Jentic.
What authentication does the Firebase App Check API use?
Management endpoints (service configs, debug tokens, attestation configs) use Google OAuth 2.0 with the firebase or cloud-platform scope. Token exchange endpoints accept the platform attestation token (App Attest, Play Integrity, reCAPTCHA, etc.) directly. Through Jentic, OAuth credentials live in the encrypted vault and never enter agent context.
Can I exchange a Play Integrity token for an App Check token via the Firebase App Check API?
Yes. POST /v1/{+app}:exchangePlayIntegrityToken takes a Play Integrity JWS in the playIntegrityToken field and returns a short-lived App Check token suitable for the X-Firebase-AppCheck header on Firestore, Realtime Database, Cloud Storage, and Cloud Functions calls.
What are the rate limits for the Firebase App Check API?
Google enforces standard per-project quotas on the App Check API. Token exchange endpoints are designed for per-request invocation and scale with your app's traffic; management endpoints (service config, debug tokens) are subject to lower per-minute quotas typical of management APIs.
How do I enforce App Check on Firestore through Jentic?
Run pip install jentic, search for configure firebase app check enforcement, load the services.patch operation, and execute it with name=projects/PROJECT/services/firestore.googleapis.com and enforcementMode=ENFORCED. Get started with Jentic One, the self-hosted execution layer.
Does the Firebase App Check API support reCAPTCHA Enterprise?
Yes. POST /v1/{+app}:exchangeRecaptchaEnterpriseToken accepts a reCAPTCHA Enterprise token from a Web client and returns an App Check token. There is also exchangeRecaptchaV3Token for reCAPTCHA v3 site keys.
Is the Firebase App Check API free?
App Check itself is included with Firebase at no extra charge under typical usage. Underlying provider services such as reCAPTCHA Enterprise are billed separately according to their own pricing.
Can I limit what my agent is allowed to do with the Firebase App Check API?
Yes. Because you run Jentic One yourself, your own rules decide which of the 27 App Check operations the agent may call, so you can allow only what a task needs, such as exchangePlayIntegrityToken or generateAppAttestChallenge, and exclude the rest. Since App Check puts the app resource in the URL path, like /v1/{app}:exchangePlayIntegrityToken, a rule can pin the agent to a single Firebase app and no other. Your Google service-account credential is stored encrypted by your own instance and injected only at execution time, so it never enters the agent's prompt or context.
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