genkit-production-expert

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name: genkit-production-expert description: Build production Firebase Genkit applications including RAG systems, multi-step flows, and tool calling for Node.js/Python/Go. Deploy to Firebase Functions or Cloud Run with AI monitoring. Use when asked to "create genkit flow" or "implement RAG". allowed-tools: Read, Write, Edit, Grep, Glob, Bash license: MIT

What This Skill Does

This skill provides comprehensive expertise in building production-ready Firebase Genkit applications across Node.js (1.0), Python (Alpha), and Go (1.0). It handles the complete lifecycle from initialization to deployment with AI monitoring.

Core Capabilities

1. Project Initialization: Set up properly structured Genkit projects with best practices
2. Flow Architecture: Design multi-step AI workflows with proper error handling
3. RAG Implementation: Build retrieval-augmented generation systems with vector search
4. Tool Integration: Implement function calling and custom tools
5. Monitoring Setup: Configure AI monitoring for Firebase Console
6. Multi-Language Support: Expert guidance for TypeScript, Python, and Go implementations
7. Production Deployment: Deploy to Firebase Functions or Google Cloud Run

When This Skill Activates

This skill automatically activates when you mention:

Trigger Phrases

• "Create a Genkit flow"
• "Implement RAG with Genkit"
• "Deploy Genkit to Firebase"
• "Set up Gemini integration"
• "Configure AI monitoring"
• "Build Genkit application"
• "Design AI workflow"
• "Genkit tool calling"
• "Vector search with Genkit"
• "Genkit production deployment"

Use Case Patterns

• Setting up new Genkit projects
• Implementing RAG systems with embedding models
• Integrating Gemini 2.5 Pro/Flash models
• Creating multi-step AI workflows
• Deploying to production with monitoring
• Debugging Genkit flows
• Optimizing token usage and costs

How It Works

Phase 1: Requirements Analysis

User Request → Analyze needs → Determine:
- Target language (Node.js/Python/Go)
- Flow complexity (simple/multi-step/RAG)
- Model requirements (Gemini version, custom models)
- Deployment target (Firebase/Cloud Run/local)

Phase 2: Project Setup

Check existing project → If new:
  - Initialize project structure
  - Install dependencies
  - Configure environment variables
  - Set up TypeScript/Python/Go config

If existing:
  - Analyze current structure
  - Identify integration points
  - Preserve existing code

Phase 3: Implementation

Design flow architecture → Implement:
  - Input/output schemas (Zod/Pydantic/Go structs)
  - Model configuration
  - Tool definitions (if needed)
  - Retriever setup (for RAG)
  - Error handling
  - Tracing configuration

Phase 4: Testing & Validation

Create test cases → Run locally:
  - Genkit Developer UI
  - Unit tests
  - Integration tests
  - Token usage analysis

Phase 5: Production Deployment

Configure deployment → Deploy:
  - Firebase Functions (with AI monitoring)
  - Cloud Run (with auto-scaling)
  - Set up monitoring dashboards
  - Configure alerting

Workflow Examples

Example 1: Simple Question-Answering Flow

User Request: "Create a Genkit flow that answers user questions using Gemini 2.5 Flash"

Skill Response:

1. Creates TypeScript project (default)
2. Implements flow with input validation:

const qaFlow = ai.defineFlow(
  {
    name: 'qaFlow',
    inputSchema: z.object({ question: z.string() }),
    outputSchema: z.object({ answer: z.string() }),
  },
  async (input) => {
    const { text } = await ai.generate({
      model: gemini25Flash,
      prompt: `Answer this question: ${input.question}`,
      config: { temperature: 0.3 }, // Lower for factual answers
    });
    return { answer: text };
  }
);

3. Sets up local testing
4. Provides deployment instructions

Example 2: RAG System with Vector Search

User Request: "Implement RAG with Genkit for our documentation search"

Skill Response:

1. Analyzes document storage needs
2. Implements retriever with embeddings:

const docRetriever = ai.defineRetriever(
  {
    name: 'docRetriever',
    configSchema: z.object({ k: z.number().default(5) }),
  },
  async (query, config) => {
    // Generate embedding
    const embedding = await ai.embed({
      embedder: textEmbeddingGecko,
      content: query,
    });

    // Search vector database
    const results = await vectorDB.search(embedding, config.k);
    return results.map(doc => ({
      content: doc.text,
      metadata: { source: doc.source },
    }));
  }
);

3. Creates RAG flow combining retrieval + generation
4. Sets up vector database connection
5. Implements caching for efficiency

Example 3: Multi-Agent Tool Calling

User Request: "Create a Genkit agent with weather and calendar tools"

Skill Response:

1. Defines tools with proper schemas:

const weatherTool = ai.defineTool({
  name: 'getWeather',
  description: 'Get current weather for a location',
  inputSchema: z.object({ location: z.string() }),
  outputSchema: z.object({
    temp: z.number(),
    conditions: z.string(),
  }),
}, async ({ location }) => {
  // Call weather API
});

const calendarTool = ai.defineTool({
  name: 'checkCalendar',
  description: 'Check calendar availability',
  inputSchema: z.object({ date: z.string() }),
  outputSchema: z.object({ available: z.boolean() }),
}, async ({ date }) => {
  // Check calendar API
});

2. Creates agent flow with tool access:

const agentFlow = ai.defineFlow(async (userQuery) => {
  const { text } = await ai.generate({
    model: gemini25Flash,
    prompt: userQuery,
    tools: [weatherTool, calendarTool],
  });
  return text;
});

3. Implements proper error handling
4. Sets up tool execution tracing

Production Best Practices Applied

1. Schema Validation

• All inputs/outputs use Zod (TS), Pydantic (Python), or structs (Go)
• Prevents runtime errors from malformed data

2. Error Handling

try {
  const result = await ai.generate({...});
  return result;
} catch (error) {
  if (error.code === 'SAFETY_BLOCK') {
    // Handle safety filters
  } else if (error.code === 'QUOTA_EXCEEDED') {
    // Handle rate limits
  }
  throw error;
}

3. Cost Optimization

• Context caching for repeated prompts
• Token usage monitoring
• Temperature tuning for use case
• Model selection (Flash vs Pro)

4. Monitoring

• OpenTelemetry tracing enabled
• Custom span attributes
• Firebase Console integration
• Alert configuration

5. Security

• Environment variable management
• API key rotation support
• Input sanitization
• Output filtering

Integration with Other Tools

Works With ADK Plugin

When complex multi-agent orchestration is needed:

• Use Genkit for individual specialized flows
• Use ADK for orchestrating multiple Genkit flows
• Pass results via A2A protocol

Works With Vertex AI Validator

For production deployment:

• Genkit implements the flows
• Validator ensures production readiness
• Validates monitoring configuration
• Checks security compliance

Tool Permissions

This skill uses the following tools:

• Read: Analyze existing code and configuration
• Write: Create new flow files and configs
• Edit: Modify existing Genkit implementations
• Grep: Search for integration points
• Glob: Find related files
• Bash: Install dependencies, run tests, deploy

Troubleshooting Guide

Common Issue 1: API Key Not Found

Symptoms: Error "API key not provided" Solution:

1. Check .env file exists
2. Verify GOOGLE_API_KEY is set
3. Ensure dotenv is loaded

Common Issue 2: Flow Not Appearing in UI

Symptoms: Flow not visible in Genkit Developer UI Solution:

1. Ensure flow is exported
2. Restart Genkit server
3. Check console for errors

Common Issue 3: High Token Usage

Symptoms: Unexpected costs Solution:

1. Implement context caching
2. Use Gemini 2.5 Flash instead of Pro
3. Lower temperature
4. Compress prompts

Version History

• 1.0.0 (2025): Initial release with Node.js 1.0, Python Alpha, Go 1.0 support
• Supports Gemini 2.5 Pro/Flash
• AI monitoring integration
• Production deployment patterns

References

• Official Docs: https://genkit.dev/
• Node.js 1.0 Announcement: https://firebase.blog/posts/2025/02/announcing-genkit/
• Go 1.0 Announcement: https://developers.googleblog.com/en/announcing-genkit-go-10/
• Vertex AI Plugin: https://genkit.dev/docs/integrations/vertex-ai/