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firebase-ai-logic-basics
Official skill for integrating Firebase AI Logic (Gemini API) into web applications. Covers setup, multimodal inference, structured output, and security.
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Official skill for integrating Firebase AI Logic (Gemini API) into web applications. Covers setup, multimodal inference, structured output, and security.
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Firebase AI Logic Basics
Overview
Firebase AI Logic is a product of Firebase that allows developers to add gen AI to their mobile and web apps using client-side SDKs. You can call Gemini models directly from your app without managing a dedicated backend. Firebase AI Logic, which was previously known as "Vertex AI for Firebase", represents the evolution of Google's AI integration platform for mobile and web developers.
It supports the two Gemini API providers:
- Gemini Developer API: It has a free tier ideal for prototyping, and pay-as-you-go for production
- Agent Platform Gemini API (formerly branded Vertex AI): Ideal for scale with enterprise-grade production readiness, requires Blaze plan
Use the Gemini Developer API as a default, and only Agent Platform Gemini API (formerly branded Vertex AI) if the application requires it.
Setup & Initialization
Prerequisites
- Before starting, ensure you have Node.js 16+ and npm installed. Install them if they aren’t already available.
- Identify the platform the user is interested in building on prior to starting: Android, iOS, Flutter or Web.
- If their platform is unsupported, Direct the user to Firebase Docs to learn how to set up AI Logic for their application (share this link with the user https://firebase.google.com/docs/ai-logic/get-started)
Installation
The library is part of the standard Firebase Web SDK.
npm install -g firebase@latest
If you're in a firebase directory (with a firebase.json) the currently selected project will be marked with "current" using this command:
npx -y firebase-tools@latest projects:list
Ensure there's at least one app associated with the current project
npx -y firebase-tools@latest apps:list
Initialize AI logic SDK with the init command
npx -y firebase-tools@latest init ailogic
This will automatically enable the Gemini Developer API in the Firebase console.
More info in Firebase AI Logic Getting Started
Core Capabilities
[!WARNING] CRITICAL: Use current model names: Always check the Firebase AI Logic Models documentation for the currently supported model names. Do NOT use
gemini-2.0-proorgemini-2.0-flashor other older models that are shutdown.
Text-Only Generation
Multimodal (Text + Images/Audio/Video/PDF input)
Firebase AI Logic allows Gemini models to analyze image files directly from your app. This enables features like creating captions, answering questions about images, detecting objects, and categorizing images. Beyond images, Gemini can analyze other media types like audio, video, and PDFs by passing them as inline data with their MIME type. For files larger than 20 megabytes (which can cause HTTP 413 errors as inline data), store them in Cloud Storage for Firebase and pass their URLs to the Gemini Developer API.
Chat Session (Multi-turn)
Maintain history automatically using startChat.
Streaming Responses
To improve the user experience by showing partial results as they arrive (like a
typing effect), use generateContentStream instead of generateContent for
faster display of results.
Generate Images with Nano Banana
[!WARNING] Use current Image model names: Always check the Firebase AI Logic Models documentation for the currently supported image generation (Nano Banana) model names.
- Requires an upgraded Blaze pay-as-you-go billing plan.
Search Grounding with the built in googleSearch tool
Supported Platforms and Frameworks
Supported Platforms and Frameworks include Kotlin and Java for Android, Swift for iOS, JavaScript for web apps, Dart for Flutter, and C Sharp for Unity.
Advanced Features
Structured Output (JSON)
Enforce a specific JSON schema for the response.
On-Device AI (Hybrid)
Hybrid on-device inference for web apps, where the Firebase Javascript SDK automatically checks for Gemini Nano's availability (after installation) and switches between on-device or cloud-hosted prompt execution. This requires specific steps to enable model usage in the Chrome browser, more info in the hybrid-on-device-inference documentation.
Security & Production
App Check
[!WARNING] Critical Safety Requirement: In order to use AI Logic safely, you MUST set up App Check on your app. This prevents unauthorized clients from using your API quota and accessing your backend resources.
See App Check with reCAPTCHA Enterprise for setup instructions.
App Check Debug Tokens for Local Development & CI/CD
Because App Check attestation providers (like Play Integrity or DeviceCheck) reject emulators, simulators, or CI environments, you must use App Check Debug Tokens during development and testing to bypass standard attestation.
Local Development (Auto-Generated)
- Configure your code's App Check provider to use the debug factory:
- Web: Set
self.FIREBASE_APPCHECK_DEBUG_TOKEN = true;before initializing App Check. - Android: Install
DebugAppCheckProviderFactory.getInstance(). - iOS: Set provider factory to
AppCheckDebugProviderFactory().
- Web: Set
- Run your app in the emulator/localhost.
- Look at your runtime debugger console / Logcat logs for the generated UUID:
- Example:
AppCheck debug token: "123a4567-b89c-12d3-e456-789012345678"
- Example:
- Register this token in the Firebase Console under Security > App Check > Apps > Manage debug tokens.
CI/CD Pipelines (Pre-Provisioned)
- Generate and register a new debug token in the Firebase Console under Security > App Check > Apps > Manage debug tokens.
- Add this token string as an encrypted secret in your CI system (e.g.
APP_CHECK_DEBUG_TOKEN). - Configure your build to pass this secret as an environment variable to the
SDK during test execution (e.g.
self.FIREBASE_APPCHECK_DEBUG_TOKEN = process.env.APP_CHECK_DEBUG_TOKEN).
Remote Config
Consider that you do not need to hardcode model names (e.g., a specific model version string). Use Firebase Remote Config to update model versions dynamically without deploying new client code. See Changing model names remotely
[!WARNING] CRITICAL: Backend Provisioning Required For all platforms (Flutter, Android, iOS, Web), you MUST run
npx firebase-tools init ailogicto provision the service.flutterfire configureONLY handles client configuration and does NOT enable the AI service, leading toPERMISSION_DENIEDerrors.
Initialization Code References
| Language, | Gemini API | Context URL | : Framework, : provider : : : Platform : : : | :---------- | :--------- | :---------------------------------------------- | | Web Modular | Gemini | firebase://docs/ai-logic/get-started | : API : Developer : : : : API : : : : (Developer : : : : API) : : | iOS (Swift) | Gemini | ios_setup.md | : : Developer : : : : API : : | Flutter | Gemini | flutter_setup.md | : (Dart) : Developer : : : : API : :
[!WARNING] CRITICAL: Use current model names: Always check the Firebase AI Logic Models documentation for the currently supported model names. Do NOT use
gemini-2.0-proorgemini-2.0-flashor other older models that are shutdown.
References
Web SDK code examples and usage patterns iOS SDK code examples and usage patterns Flutter SDK code examples and usage patterns
Dateimetadaten
name: firebase-ai-logic-basics description: Official skill for integrating Firebase AI Logic (Gemini API) into web applications. Covers setup, multimodal inference, structured output, and security. version: 1.0.1 metadata: category: AiAndMachineLearning
Originaltext anzeigen
---
name: firebase-ai-logic-basics
description: Official skill for integrating Firebase AI Logic (Gemini API) into web applications. Covers setup, multimodal inference, structured output, and security.
version: 1.0.1
metadata:
category: AiAndMachineLearning
---
# Firebase AI Logic Basics
## Overview
Firebase AI Logic is a product of Firebase that allows developers to add gen AI
to their mobile and web apps using client-side SDKs. You can call Gemini models
directly from your app without managing a dedicated backend. Firebase AI Logic,
which was previously known as "Vertex AI for Firebase", represents the evolution
of Google's AI integration platform for mobile and web developers.
It supports the two Gemini API providers:
- **Gemini Developer API**: It has a free tier ideal for prototyping, and
pay-as-you-go for production
- **Agent Platform Gemini API** (formerly branded Vertex AI): Ideal for scale
with enterprise-grade production readiness, requires Blaze plan
Use the Gemini Developer API as a default, and only Agent Platform Gemini API
(formerly branded Vertex AI) if the application requires it.
## Setup & Initialization
### Prerequisites
- Before starting, ensure you have **Node.js 16+** and npm installed. Install
them if they aren’t already available.
- Identify the platform the user is interested in building on prior to
starting: Android, iOS, Flutter or Web.
- If their platform is unsupported, Direct the user to Firebase Docs to learn
how to set up AI Logic for their application (share this link with the user
https://firebase.google.com/docs/ai-logic/get-started)
### Installation
The library is part of the standard Firebase Web SDK.
`npm install -g firebase@latest`
If you're in a firebase directory (with a firebase.json) the currently selected
project will be marked with "current" using this command:
`npx -y firebase-tools@latest projects:list`
Ensure there's at least one app associated with the current project
`npx -y firebase-tools@latest apps:list`
Initialize AI logic SDK with the init command
`npx -y firebase-tools@latest init ailogic`
This will automatically enable the Gemini Developer API in the Firebase console.
More info in
[Firebase AI Logic Getting Started](https://firebase.google.com/docs/ai-logic/get-started.md.txt)
## Core Capabilities
> [!WARNING] **CRITICAL: Use current model names:** Always check the
> [Firebase AI Logic Models documentation](https://firebase.google.com/docs/ai-logic/models.md.txt)
> for the currently supported model names. Do NOT use `gemini-2.0-pro` or
> `gemini-2.0-flash` or other older models that are shutdown.
### Text-Only Generation
### Multimodal (Text + Images/Audio/Video/PDF input)
Firebase AI Logic allows Gemini models to analyze image files directly from your
app. This enables features like creating captions, answering questions about
images, detecting objects, and categorizing images. Beyond images, Gemini can
analyze other media types like audio, video, and PDFs by passing them as inline
data with their MIME type. For files larger than 20 megabytes (which can cause
HTTP 413 errors as inline data), store them in Cloud Storage for Firebase and
pass their URLs to the Gemini Developer API.
### Chat Session (Multi-turn)
Maintain history automatically using `startChat`.
### Streaming Responses
To improve the user experience by showing partial results as they arrive (like a
typing effect), use `generateContentStream` instead of `generateContent` for
faster display of results.
### Generate Images with Nano Banana
> [!WARNING] **Use current Image model names:** Always check the
> [Firebase AI Logic Models documentation](https://firebase.google.com/docs/ai-logic/models.md.txt)
> for the currently supported image generation (Nano Banana) model names.
- Requires an upgraded Blaze pay-as-you-go billing plan.
### Search Grounding with the built in googleSearch tool
## Supported Platforms and Frameworks
Supported Platforms and Frameworks include Kotlin and Java for Android, Swift
for iOS, JavaScript for web apps, Dart for Flutter, and C Sharp for Unity.
## Advanced Features
### Structured Output (JSON)
Enforce a specific JSON schema for the response.
### On-Device AI (Hybrid)
Hybrid on-device inference for web apps, where the Firebase Javascript SDK
automatically checks for Gemini Nano's availability (after installation) and
switches between on-device or cloud-hosted prompt execution. This requires
specific steps to enable model usage in the Chrome browser, more info in the
[hybrid-on-device-inference documentation](https://firebase.google.com/docs/ai-logic/hybrid-on-device-inference.md.txt).
## Security & Production
### App Check
> [!WARNING] **Critical Safety Requirement:** In order to use AI Logic safely,
> you MUST set up App Check on your app. This prevents unauthorized clients from
> using your API quota and accessing your backend resources.
See
[App Check with reCAPTCHA Enterprise](https://firebase.google.com/docs/app-check/web/recaptcha-enterprise-provider.md.txt)
for setup instructions.
#### App Check Debug Tokens for Local Development & CI/CD
Because App Check attestation providers (like Play Integrity or DeviceCheck)
reject emulators, simulators, or CI environments, you must use **App Check Debug
Tokens** during development and testing to bypass standard attestation.
##### Local Development (Auto-Generated)
1. Configure your code's App Check provider to use the debug factory:
* **Web**: Set `self.FIREBASE_APPCHECK_DEBUG_TOKEN = true;` before
initializing App Check.
* **Android**: Install `DebugAppCheckProviderFactory.getInstance()`.
* **iOS**: Set provider factory to `AppCheckDebugProviderFactory()`.
2. Run your app in the emulator/localhost.
3. Look at your runtime debugger console / Logcat logs for the generated UUID:
* *Example:* `AppCheck debug token:
"123a4567-b89c-12d3-e456-789012345678"`
4. Register this token in the Firebase Console under **Security > App Check >
Apps > Manage debug tokens**.
##### CI/CD Pipelines (Pre-Provisioned)
1. Generate and register a new debug token in the Firebase Console under
**Security > App Check > Apps > Manage debug tokens**.
2. Add this token string as an encrypted secret in your CI system (e.g.
`APP_CHECK_DEBUG_TOKEN`).
3. Configure your build to pass this secret as an environment variable to the
SDK during test execution (e.g. `self.FIREBASE_APPCHECK_DEBUG_TOKEN =
process.env.APP_CHECK_DEBUG_TOKEN`).
### Remote Config
Consider that you do not need to hardcode model names (e.g., a specific model
version string). Use Firebase Remote Config to update model versions dynamically
without deploying new client code. See
[Changing model names remotely](https://firebase.google.com/docs/ai-logic/change-model-name-remotely.md.txt)
> [!WARNING] **CRITICAL: Backend Provisioning Required** For all platforms
> (Flutter, Android, iOS, Web), you MUST run `npx firebase-tools init ailogic`
> to provision the service. `flutterfire configure` ONLY handles client
> configuration and does NOT enable the AI service, leading to
> `PERMISSION_DENIED` errors.
## Initialization Code References
| Language, | Gemini API | Context URL |
: Framework, : provider : :
: Platform : : :
| :---------- | :--------- | :---------------------------------------------- |
| Web Modular | Gemini | firebase://docs/ai-logic/get-started |
: API : Developer : :
: : API : :
: : (Developer : :
: : API) : :
| iOS (Swift) | Gemini | [ios_setup.md](references/ios_setup.md) |
: : Developer : :
: : API : :
| Flutter | Gemini | [flutter_setup.md](references/flutter_setup.md) |
: (Dart) : Developer : :
: : API : :
> [!WARNING] **CRITICAL: Use current model names:** Always check the
> [Firebase AI Logic Models documentation](https://firebase.google.com/docs/ai-logic/models.md.txt)
> for the currently supported model names. Do NOT use `gemini-2.0-pro` or
> `gemini-2.0-flash` or other older models that are shutdown.
## References
[Web SDK code examples and usage patterns](references/usage_patterns_web.md)
[iOS SDK code examples and usage patterns](references/ios_setup.md)
[Flutter SDK code examples and usage patterns](references/flutter_setup.md)
[Android (Kotlin) SDK usage patterns](references/usage_patterns_android.md)
Quelle prüfen
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- Preis unbestätigt
- Ausführen
- Anforderungen unbestätigt. Agenten-, API- und Dienstkosten an der Quelle prüfen.
- Lizenz
- Apache-2.0
- Preis unbestätigt
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Kostenloser Bezug bedeutet nicht kostenlosen Betrieb. Preise sind keine Sicherheitsbewertung. Preisinformation einreichen →
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Ein Anleitungspfad ist erfasst. Das ist kein Ausführungstest und keine Sicherheits- oder Kompatibilitätsgarantie.
Vor Installation prüfen: Automatische Installation vermeiden
Lizenz: Apache-2.0
- Dependency or permission surface needs review
- Permission surface may require sandboxing
- The skill description focuses on web applications, but the content covers multiple platforms (Android, iOS, Flutter, Web). This is a minor inconsistency but not a functional issue.
- The SKILL.md excerpt is truncated in the review, but the provided content is comprehensive and well-structured.
- Quality score needs review
- Permission surface needs review: secrets or environment access, shell or command execution
- Dependency/runtime risk: credential or environment access, external package install surface
- Permission surface: secrets or environment access, shell or command execution
Tools sind Metadatenhinweise, keine getestete Kompatibilität. Prompts sind Vorschläge.
Mit einer kleinen Aufgabe beginnen
- 1Quelle lesen und Eingaben, Ergebnisse, Abhängigkeiten sowie Berechtigungen prüfen.
- 2Agent um einen Plan bitten. Einrichtung und Kosten vor einem isolierten Test genehmigen.
- 3Ergebnisse und geänderte Dateien prüfen. Nur tatsächliche Ausführungen melden und die Quellrevision aufbewahren.
Prüfe Abhängigkeiten, API-Schlüssel und externe Kosten in der Quelle. Öffentliche Repositories bedeuten nicht, dass alle Dienste kostenlos sind.
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Metadaten und Prüfungen dienen der Orientierung. Beliebtheit, Quellenerfassung und erfolgreiche Ausführung sind verschiedene Fakten.
- Quell-Repository
- firebase/agent-skills
- Lizenz
- Apache-2.0
- Version
- 1.0.1
- Letzter GitHub-Push
- 2. Sept. 2026
- Verzeichnis aktualisiert
- 5. Sept. 2026
- Anleitungspfad
- skills/firebase-ai-logic-basics/SKILL.md @ a0b4e143f40c
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70/100
Stark
Vertrauen
57/100
Do not auto-install
Audit
74/100
Prüfung nötig
- Dependency or permission surface needs review
- Permission surface may require sandboxing
- The skill description focuses on web applications, but the content covers multiple platforms (Android, iOS, Flutter, Web). This is a minor inconsistency but not a functional issue.
- The SKILL.md excerpt is truncated in the review, but the provided content is comprehensive and well-structured.
- Quality score needs review
- Permission surface needs review: secrets or environment access, shell or command execution
- Dependency/runtime risk: credential or environment access, external package install surface
- Permission surface: secrets or environment access, shell or command execution
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Weitere Details
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"agent_proven": {
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"label": "Needs first agent run",
"summary": "No agent outcome reports yet. Use Resolve, run one narrow sandbox task, then report the result.",
"metrics": {
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"successfulOutcomes": 0,
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"installAttempts": 0,
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"productionOutcomes": 0,
"humanReviewRequired": 0,
"uniqueAgents": 0,
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},
"signals": [],
"penalties": [
"No real agent outcome evidence yet"
]
},
"audit": {
"score": 74,
"risk_level": "needs_review",
"risk_label": "Needs review",
"warnings": [
"Dependency or permission surface needs review",
"Permission surface may require sandboxing",
"The skill description focuses on web applications, but the content covers multiple platforms (Android, iOS, Flutter, Web). This is a minor inconsistency but not a functional issue.",
"The SKILL.md excerpt is truncated in the review, but the provided content is comprehensive and well-structured.",
"Quality score needs review",
"Permission surface needs review: secrets or environment access, shell or command execution",
"Dependency/runtime risk: credential or environment access, external package install surface",
"Permission surface: secrets or environment access, shell or command execution"
]
},
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},
"quality": {
"score": 70,
"label": "Strong"
},
"supply": {
"track": "Design and creative production",
"scenario": "Multimodal media",
"maintenance": "1mo since push",
"risk": "Needs review"
},
"alternative_skills": [
{
"slug": "projectdiscovery-nuclei",
"name": "Nuclei",
"url": "https://www.openagentskill.com/skills/projectdiscovery-nuclei",
"stars": 29159,
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"audit_score": 91
}
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"do_not_use_when": [
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"The skill description focuses on web applications, but the content covers multiple platforms (Android, iOS, Flutter, Web). This is a minor inconsistency but not a functional issue.",
"High-risk permission hints: Shell or command execution, Secrets or environment access",
"Dependency or permission surface needs review",
"Permission surface may require sandboxing",
"The SKILL.md excerpt is truncated in the review, but the provided content is comprehensive and well-structured.",
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],
"agent_contract": {
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"install_policy": "block",
"minimum_review_before_use": [
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"Audit: 74/100 Needs review",
"Safety: 26/100 Avoid automatic install",
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],
"expected_agent_output": {
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"expected_outcomes": [
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"blocked_by_risk",
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"skill_slug": "firebase-firebase-ai-logic-basics",
"task": "Use firebase-ai-logic-basics in an agent workflow",
"agent": "codex",
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}
},
"endpoints": {
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"api": "https://www.openagentskill.com/api/agent/skills/firebase-firebase-ai-logic-basics",
"audit": "https://www.openagentskill.com/skills/firebase-firebase-ai-logic-basics/audit",
"eval": "https://www.openagentskill.com/api/agent/evals?slug=firebase-firebase-ai-logic-basics&task=Use%20firebase-ai-logic-basics%20in%20an%20agent%20workflow&max_risk=medium",
"resolve": "https://www.openagentskill.com/api/agent/resolve?task=Use%20firebase-ai-logic-basics%20in%20an%20agent%20workflow&agent=codex&max_risk=medium",
"receipt": "https://www.openagentskill.com/api/agent/receipt?task=Use%20firebase-ai-logic-basics%20in%20an%20agent%20workflow&agent=codex&max_risk=medium&format=text",
"install": "https://www.openagentskill.com/api/skills/firebase-firebase-ai-logic-basics/install",
"manifest": "https://www.openagentskill.com/api/registry/manifest/firebase-firebase-ai-logic-basics"
}
}Für Ersteller
Quelle des Eintrags
Registry-indexiert
Dieser Eintrag wurde aus öffentlichen Quellen indexiert und ist erst nach Genehmigung eines Maintainer-Anspruchs offiziell.
- Ersteller
- firebase
- Quelle
- firebase/agent-skills
- Indexiert von
- OpenAgentSkill Community-Index
Die Zuordnung verlinkt auf das öffentliche Repository oder Creator-Profil. Creator können den Eintrag beanspruchen, um Eigentümersignale zu aktualisieren.
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Zeige den kanonischen Eintrag, aktuelle Vertrauens- und Audit-Signale sowie echte Agent-Proven-Evidenz dort, wo Entwickler das Repository bewerten.
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[](https://www.openagentskill.com/skills/firebase-firebase-ai-logic-basics/audit)
[](https://www.openagentskill.com/skills/firebase-firebase-ai-logic-basics?ref=github&utm_source=github&utm_medium=referral&utm_campaign=creator_badge)Community-Signal
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