Common Use Cases

mkdir my-saas && cd my-saas

synapsex "create a SaaS application with:
- Next.js 14 frontend with TypeScript and Tailwind CSS
- FastAPI backend with PostgreSQL database
- JWT authentication with refresh tokens
- Stripe subscription billing (Starter, Pro, Enterprise plans)
- Role-based access control (admin, user, viewer)
- Docker Compose for local development
- GitHub Actions CI/CD pipeline"

cd existing-project

# Understand the codebase first
synapsex "give me an overview of this project's architecture and where authentication is handled"

# Then add the feature
synapsex "add email verification to the registration flow:
1. Send a verification email on signup using the existing email service
2. Add a /verify-email endpoint that validates the token
3. Block unverified accounts from accessing protected routes
4. Add a resend verification email endpoint
5. Write tests for all new endpoints"

# Paste the error log
synapsex "users are getting 500 errors on checkout. Here's the error:
TypeError: Cannot read properties of undefined (reading 'stripeCustomerId')
  at PaymentService.createSubscription (src/services/payment.ts:78:32)
  at POST /api/subscriptions (src/routes/subscriptions.ts:23:25)

Fix the root cause and add proper null checking throughout the payment service."

synapsex "add a new 'organizations' feature to the existing user schema:
- Create organizations table with name, slug, plan, owner_id
- Add user_organizations join table with role field
- Update the user model to include organizations relation
- Write the Prisma migration file
- Update all API endpoints that return user data to include organization info
- Keep all existing tests passing"

synapsex "analyze the test coverage and write tests to bring it to 80%:
1. Identify all untested functions and branches
2. Write unit tests for service classes with mocked dependencies
3. Write integration tests for all API endpoints
4. Add edge case tests for authentication and authorization
5. Set up coverage reporting in the CI pipeline"

synapsex "the /api/products endpoint takes 3 seconds to respond with 10,000 products.
Optimize it using:
1. Database query optimization with proper indexes
2. Pagination (default 20 items per page)
3. Redis caching with 5-minute TTL
4. Field selection to avoid fetching unused columns
5. Benchmark before and after to confirm improvement"

synapsex "perform a security audit of this API and fix all vulnerabilities:
1. Check for SQL injection vulnerabilities
2. Verify all user inputs are validated and sanitized
3. Ensure authentication tokens are properly secured
4. Check for exposed sensitive data in API responses
5. Add rate limiting to authentication endpoints
6. Verify CORS configuration is restrictive
7. Scan dependencies for known CVEs and update vulnerable packages"

synapsex "create a complete CI/CD pipeline for this project:
- GitHub Actions workflow for PR checks (lint, test, build)
- Staging deployment on merge to main
- Production deployment on version tag
- Docker build with ACR push to sqpfprodacr.azurecr.io
- Azure Container Apps deployment
- Slack notifications for deployment status
- Automatic rollback on health check failure"

synapsex "/multi-agent migrate this entire project from JavaScript to TypeScript:
- Add TypeScript strict mode configuration
- Convert all .js files to .ts with proper types
- Add interfaces for all data models
- Fix all type errors
- Update build scripts and tsconfig
- Ensure all tests still pass"

# Generate OpenAPI docs from code
synapsex "generate OpenAPI 3.0 documentation from all Express route definitions.
Include request/response schemas, authentication requirements, and example payloads."

# Generate README
synapsex "write a comprehensive README.md for this project including:
setup instructions, environment variables, API overview, contributing guide, and license"

# Generate inline docs
synapsex "add JSDoc comments to all exported functions and classes in the src/ directory"

synapsex "integrate the QCOS SDK into this Python application:
1. Add quantum circuit execution for optimization tasks in the pricing engine
2. Implement noise abstraction layer using QCOS middleware
3. Add fallback to classical computation when quantum resources are unavailable
4. Write benchmarks comparing quantum vs classical execution times"

synapsex /multi-agent implement a complete notification system:
- Agent 1 (SynapseX): Email notifications with SendGrid
- Agent 2 (Claude): In-app real-time notifications with WebSockets
- Agent 3 (Gemini): Push notifications for mobile apps
- Agent 4 (Codex): Notification preferences management API