chore: mastra example

[NicholasKissel]

Changes

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
rivet-site	❌ Failed (Inspect)			Jul 28, 2025 6:51pm

[NicholasKissel]

• chore: mastra example #2805 👈 (View in Graphite)
• main

---

How to use the Graphite Merge Queue

Add the label merge-queue to this PR to add it to the merge queue.

You must have a Graphite account in order to use the merge queue. Sign up using this link.

An organization admin has enabled the Graphite Merge Queue in this repository.

Please do not merge from GitHub as this will restart CI on PRs being processed by the merge queue.

This stack of pull requests is managed by Graphite. Learn more about stacking.

[claude]

Claude finished @NicholasKissel's task —— View job

---

Code Review for Mastra Example PR

I'll review this pull request for code quality, best practices, potential bugs, performance considerations, security concerns, and test coverage.

Todo List:

• Review project structure and configuration files
• Analyze core TypeScript implementation files
• Check actor and server implementation for security issues
• Review agent and tool implementations
• Assess utility functions and error handling
• Evaluate documentation quality
• Check for test coverage
• Provide comprehensive feedback summary

🔍 Comprehensive Code Review

✅ Strengths

Architecture & Design:

• Excellent separation of concerns with clear actor/agent/tools/utils structure
• Type safety throughout with proper TypeScript interfaces and Zod schemas
• State persistence via Rivet Actors enables conversation continuity
• Modular tool system makes it easy to add new capabilities
• Clean API design with RESTful endpoints and clear data flow

Code Quality:

• Consistent code style and good naming conventions
• Proper error handling with graceful fallbacks
• Good documentation with comprehensive README and examples
• Memory management prevents unbounded conversation growth

⚠️ Security Concerns (High Priority)

Critical Issues:

1. XSS Vulnerability (server.ts:248): Using innerHTML without sanitization

   messageContent.innerHTML = content; // ❌ Unsafe

   Fix: Use textContent or sanitize HTML content

2. Information Disclosure (actor.ts:74): Exposing internal error details

   let errorMessage = `Mastra Agent error: ${error.message}`; // ❌ Potential leak

   Fix: Use generic error messages for users

Medium Priority:
3. Missing Input Validation: Chat endpoint lacks request validation
4. No Rate Limiting: Could enable abuse of OpenAI API
5. CORS Configuration: Missing for production deployment

🐛 Potential Bugs

1. Weather API Error Handling (utils/weather.ts:54-64): Fallback returns random data that could mislead users
2. Timeout Issues: 5-second timeout may be insufficient for some API calls
3. Type Safety Gap: Weather API response not validated before use

🚀 Performance Considerations

Good:

• Conversation truncation prevents memory bloat
• Efficient actor lookup with getOrCreate
• AbortSignal timeouts prevent hanging requests

Could Improve:

• Consider caching weather data to reduce API calls
• Add connection pooling for high traffic scenarios

🧪 Test Coverage

Missing:

• No unit tests for core functionality
• No integration tests for API endpoints
• No error scenario testing
• No security testing

Recommendation: Add test files for:

• Actor state management
• Tool execution
• API endpoint behavior
• Error handling scenarios

📚 Documentation Quality

Excellent:

• Comprehensive README with setup instructions
• Clear API documentation with examples
• Architecture diagrams and interaction examples
• Proper site integration documentation

🔧 Recommended Fixes

Immediate (Security):

// Fix XSS in server.ts
messageContent.textContent = content; // ✅ Safe

// Fix error exposure in actor.ts  
const errorMessage = "An error occurred processing your request"; // ✅ Generic

Short-term:

• Add input validation with Zod schemas
• Implement rate limiting
• Add proper error logging (separate from user errors)
• Validate external API responses

Long-term:

• Add comprehensive test suite
• Consider adding authentication for production use
• Add monitoring/observability features

🎯 Overall Assessment

This is a high-quality integration example that demonstrates proper architecture and clean implementation. The code is well-structured and follows TypeScript best practices. However, there are critical security issues that must be addressed before production use.

Recommendation: ✅ Approve with required changes - Fix the XSS vulnerability and error disclosure before merging.

--- | Branch: 07-24-chore_mastra_example

[cloudflare-workers-and-pages]

Deploying rivet with    Cloudflare Pages

Latest commit:	f7ea7a6
Status:	🚫  Build failed.

View logs

[claude]

Claude finished @NicholasKissel's task —— View job

---

Code Review for Mastra Example PR

I'll review this pull request for code quality, best practices, potential bugs, performance considerations, security concerns, and test coverage.

Todo List:

• Review project structure and configuration files
• Analyze core TypeScript implementation files
• Check actor and server implementation for security issues
• Review agent and tool implementations
• Assess utility functions and error handling
• Evaluate documentation quality
• Check for test coverage
• Provide comprehensive feedback summary

🔍 Comprehensive Code Review

✅ Strengths

Architecture & Design:

• Excellent separation of concerns with clear actor/agent/tools/utils structure
• Type safety throughout with proper TypeScript interfaces and Zod schemas
• State persistence via Rivet Actors enables conversation continuity
• Modular tool system makes it easy to add new capabilities
• Clean API design with RESTful endpoints and clear data flow

Code Quality:

• Consistent code style and good naming conventions
• Proper error handling with graceful fallbacks
• Good documentation with comprehensive README and examples
• Memory management prevents unbounded conversation growth

⚠️ Security Concerns (High Priority)

Critical Issues:

1. XSS Vulnerability (server.ts:248): Using innerHTML without sanitization

   messageContent.innerHTML = content; // ❌ Unsafe

   Fix: Use textContent or sanitize HTML content

2. Information Disclosure (actor.ts:74): Exposing internal error details

   let errorMessage = `Mastra Agent error: ${error.message}`; // ❌ Potential leak

   Fix: Use generic error messages for users

Medium Priority:
3. Missing Input Validation: Chat endpoint lacks request validation
4. No Rate Limiting: Could enable abuse of OpenAI API
5. CORS Configuration: Missing for production deployment

🐛 Potential Bugs

1. Weather API Error Handling (utils/weather.ts:54-64): Fallback returns random data that could mislead users
2. Timeout Issues: 5-second timeout may be insufficient for some API calls
3. Type Safety Gap: Weather API response not validated before use

🚀 Performance Considerations

Good:

• Conversation truncation prevents memory bloat
• Efficient actor lookup with getOrCreate
• AbortSignal timeouts prevent hanging requests

Could Improve:

• Consider caching weather data to reduce API calls
• Add connection pooling for high traffic scenarios

🧪 Test Coverage

Missing:

• No unit tests for core functionality
• No integration tests for API endpoints
• No error scenario testing
• No security testing

Recommendation: Add test files for:

• Actor state management
• Tool execution
• API endpoint behavior
• Error handling scenarios

📚 Documentation Quality

Excellent:

• Comprehensive README with setup instructions
• Clear API documentation with examples
• Architecture diagrams and interaction examples
• Proper site integration documentation

🔧 Recommended Fixes

Immediate (Security):

// Fix XSS in server.ts
messageContent.textContent = content; // ✅ Safe

// Fix error exposure in actor.ts  
const errorMessage = "An error occurred processing your request"; // ✅ Generic

Short-term:

• Add input validation with Zod schemas
• Implement rate limiting
• Add proper error logging (separate from user errors)
• Validate external API responses

Long-term:

• Add comprehensive test suite
• Consider adding authentication for production use
• Add monitoring/observability features

🎯 Overall Assessment

This is a high-quality integration example that demonstrates proper architecture and clean implementation. The code is well-structured and follows TypeScript best practices. However, there are critical security issues that must be addressed before production use.

Recommendation: ✅ Approve with required changes - Fix the XSS vulnerability and error disclosure before merging.

--- | Branch: 07-24-chore_mastra_example

[claude]

Claude finished @NicholasKissel's task —— View job

---

Code Review for Mastra Example PR

I'll review this pull request for code quality, best practices, potential bugs, performance considerations, security concerns, and test coverage.

Todo List:

• Review project structure and configuration files
• Analyze core TypeScript implementation files
• Check actor and server implementation for security issues
• Review agent and tool implementations
• Assess utility functions and error handling
• Evaluate documentation quality
• Check for test coverage
• Provide comprehensive feedback summary

🔍 Comprehensive Code Review

✅ Strengths

Architecture & Design:

• Excellent separation of concerns with clear actor/agent/tools/utils structure
• Type safety throughout with proper TypeScript interfaces and Zod schemas
• State persistence via Rivet Actors enables conversation continuity
• Modular tool system makes it easy to add new capabilities
• Clean API design with RESTful endpoints and clear data flow

Code Quality:

• Consistent code style and good naming conventions
• Proper error handling with graceful fallbacks
• Good documentation with comprehensive README and examples
• Memory management prevents unbounded conversation growth

⚠️ Security Concerns (High Priority)

Critical Issues:

1. Information Disclosure (actor.ts:74): Exposing internal error details

   let errorMessage = `Mastra Agent error: ${error.message}`; // ❌ Potential leak

   Fix: Use generic error messages for users

Medium Priority:
2. Missing Input Validation: Chat endpoint lacks request validation
3. No Rate Limiting: Could enable abuse of OpenAI API
4. CORS Configuration: Missing for production deployment

🐛 Potential Bugs

1. Weather API Error Handling (weather.ts:50-53): No fallback when API fails - just throws error
2. Timeout Issues: 5-second timeout may be insufficient for some API calls
3. Type Safety Gap: Weather API response not validated before use

🚀 Performance Considerations

Good:

• Conversation truncation prevents memory bloat
• Efficient actor lookup with getOrCreate
• AbortSignal timeouts prevent hanging requests

Could Improve:

• Consider caching weather data to reduce API calls
• Add connection pooling for high traffic scenarios

🧪 Test Coverage

Missing:

• No unit tests for core functionality
• No integration tests for API endpoints
• No error scenario testing
• No security testing

Recommendation: Add test files for:

• Actor state management
• Tool execution
• API endpoint behavior
• Error handling scenarios

📚 Documentation Quality

Excellent:

• Comprehensive README with setup instructions
• Clear API documentation with examples
• Architecture diagrams and interaction examples
• Proper site integration documentation

🔧 Recommended Fixes

Immediate (Security):

// Fix error exposure in actor.ts  
const errorMessage = "An error occurred processing your request"; // ✅ Generic

Short-term:

• Add input validation with Zod schemas
• Implement rate limiting
• Add proper error logging (separate from user errors)
• Validate external API responses

Long-term:

• Add comprehensive test suite
• Consider adding authentication for production use
• Add monitoring/observability features

🎯 Overall Assessment

This is a high-quality integration example that demonstrates proper architecture and clean implementation. The code is well-structured and follows TypeScript best practices. However, there are security issues that should be addressed before production use.

Recommendation: ✅ Approve with suggested changes - Address the error disclosure and add input validation for better security posture.

--- | Branch: 07-24-chore_mastra_example

[claude]

Claude finished @NicholasKissel's task —— View job

---

Code Review for Mastra Example PR

I'll review this pull request for code quality, best practices, potential bugs, performance considerations, security concerns, and test coverage.

Todo List:

• Review project structure and configuration files
• Analyze core TypeScript implementation files
• Check actor and server implementation for security issues
• Review agent and tool implementations
• Assess utility functions and error handling
• Evaluate documentation quality
• Check for test coverage
• Provide comprehensive feedback summary

🔍 Comprehensive Code Review

✅ Strengths

Architecture & Design:

• Excellent separation of concerns with clear actor/agent/tools/utils structure
• Type safety throughout with proper TypeScript interfaces and Zod schemas
• State persistence via Rivet Actors enables conversation continuity
• Modular tool system makes it easy to add new capabilities
• Clean API design with RESTful endpoints and clear data flow

Code Quality:

• Consistent code style and good naming conventions
• Proper error handling with graceful fallbacks
• Good documentation with comprehensive README and examples
• Memory management prevents unbounded conversation growth

⚠️ Security Concerns (High Priority)

Critical Issues:

1. Information Disclosure (actor.ts:74): Exposing internal error details

   let errorMessage = `Mastra Agent error: ${error.message}`; // ❌ Potential leak

   Fix: Use generic error messages for users

Medium Priority:
2. Missing Input Validation: Chat endpoint lacks request validation
3. No Rate Limiting: Could enable abuse of OpenAI API
4. CORS Configuration: Missing for production deployment

🐛 Potential Bugs

1. Weather API Error Handling (weather.ts:50-53): No fallback when API fails - just throws error
2. Timeout Issues: 5-second timeout may be insufficient for some API calls
3. Type Safety Gap: Weather API response not validated before use

🚀 Performance Considerations

Good:

• Conversation truncation prevents memory bloat
• Efficient actor lookup with getOrCreate
• AbortSignal timeouts prevent hanging requests

Could Improve:

• Consider caching weather data to reduce API calls
• Add connection pooling for high traffic scenarios

🧪 Test Coverage

Missing:

• No unit tests for core functionality
• No integration tests for API endpoints
• No error scenario testing
• No security testing

Recommendation: Add test files for:

• Actor state management
• Tool execution
• API endpoint behavior
• Error handling scenarios

📚 Documentation Quality

Excellent:

• Comprehensive README with setup instructions
• Clear API documentation with examples
• Architecture diagrams and interaction examples
• Proper site integration documentation

🔧 Recommended Fixes

Immediate (Security):

// Fix error exposure in actor.ts  
const errorMessage = "An error occurred processing your request"; // ✅ Generic

Short-term:

• Add input validation with Zod schemas
• Implement rate limiting
• Add proper error logging (separate from user errors)
• Validate external API responses

Long-term:

• Add comprehensive test suite
• Consider adding authentication for production use
• Add monitoring/observability features

🎯 Overall Assessment

This is a high-quality integration example that demonstrates proper architecture and clean implementation. The code is well-structured and follows TypeScript best practices. However, there are security issues that should be addressed before production use.

Recommendation: ✅ Approve with suggested changes - Address the error disclosure and add input validation for better security posture.

--- | Branch: 07-24-chore_mastra_example

[claude]

Claude finished @NicholasKissel's task —— View job

---

Code Review for Mastra Example PR

I'll review this pull request for code quality, best practices, potential bugs, performance considerations, security concerns, and test coverage.

Todo List:

• Review project structure and configuration files
• Analyze core TypeScript implementation files
• Check actor and server implementation for security issues
• Review agent and tool implementations
• Assess utility functions and error handling
• Evaluate documentation quality
• Check for test coverage
• Provide comprehensive feedback summary

🔍 Comprehensive Code Review

✅ Strengths

Architecture & Design:

• Excellent separation of concerns with clear actor/agent/tools/utils structure
• Type safety throughout with proper TypeScript interfaces and Zod schemas
• State persistence via Rivet Actors enables conversation continuity
• Modular tool system makes it easy to add new capabilities
• Clean API design with RESTful endpoints and clear data flow

Code Quality:

• Consistent code style and good naming conventions
• Proper error handling with graceful fallbacks
• Good documentation with comprehensive README and examples
• Memory management prevents unbounded conversation growth (actor.ts:42-44)

⚠️ Security Concerns (High Priority)

Critical Issues:

1. Information Disclosure (actor.ts:74): Exposing internal error details

   let errorMessage = `Mastra Agent error: ${error.message}`; // ❌ Potential leak

   Fix: Use generic error messages for users

Medium Priority:
2. Missing Input Validation: Chat endpoint lacks request validation
3. No Rate Limiting: Could enable abuse of OpenAI API
4. CORS Configuration: Missing for production deployment

🐛 Potential Bugs

1. Weather API Error Handling (weather.ts:50-53): No fallback when API fails - just throws error
2. Timeout Issues: 5-second timeout may be insufficient for some API calls
3. Type Safety Gap: Weather API response not validated before use

🚀 Performance Considerations

Good:

• Conversation truncation prevents memory bloat
• Efficient actor lookup with getOrCreate
• AbortSignal timeouts prevent hanging requests

Could Improve:

• Consider caching weather data to reduce API calls
• Add connection pooling for high traffic scenarios

🧪 Test Coverage

Missing:

• No unit tests for core functionality
• No integration tests for API endpoints
• No error scenario testing
• No security testing

Recommendation: Add test files for:

• Actor state management
• Tool execution
• API endpoint behavior
• Error handling scenarios

📚 Documentation Quality

Excellent:

• Comprehensive README with setup instructions
• Clear API documentation with examples
• Architecture diagrams and interaction examples
• Proper site integration documentation

🔧 Recommended Fixes

Immediate (Security):

// Fix error exposure in actor.ts  
const errorMessage = "An error occurred processing your request"; // ✅ Generic

Short-term:

• Add input validation with Zod schemas
• Implement rate limiting
• Add proper error logging (separate from user errors)
• Validate external API responses

Long-term:

• Add comprehensive test suite
• Consider adding authentication for production use
• Add monitoring/observability features

🎯 Overall Assessment

This is a high-quality integration example that demonstrates proper architecture and clean implementation. The code is well-structured and follows TypeScript best practices. However, there are security issues that should be addressed before production use.

Recommendation: ✅ Approve with suggested changes - Address the error disclosure and add input validation for better security posture.

--- | Branch: 07-24-chore_mastra_example

[claude]

Claude finished @NicholasKissel's task —— View job

---

Code Review for Mastra Example PR

I'll review this pull request for code quality, best practices, potential bugs, performance considerations, security concerns, and test coverage.

Todo List:

• Review project structure and configuration files
• Analyze core TypeScript implementation files
• Check actor and server implementation for security issues
• Review agent and tool implementations
• Assess utility functions and error handling
• Evaluate documentation quality
• Check for test coverage
• Provide comprehensive feedback summary

🔍 Comprehensive Code Review

✅ Strengths

Architecture & Design:

• Excellent separation of concerns with clear actor/agent/tools/utils structure
• Type safety throughout with proper TypeScript interfaces and Zod schemas
• State persistence via Rivet Actors enables conversation continuity
• Modular tool system makes it easy to add new capabilities
• Clean API design with RESTful endpoints and clear data flow

Code Quality:

• Consistent code style and good naming conventions
• Proper error handling with graceful fallbacks
• Good documentation with comprehensive README and examples
• Memory management prevents unbounded conversation growth (actor.ts:42-44)

⚠️ Security Concerns (High Priority)

Critical Issues:

1. Information Disclosure (actor.ts:74): Exposing internal error details

   let errorMessage = `Mastra Agent error: ${error.message}`; // ❌ Potential leak

   Fix: Use generic error messages for users

Medium Priority:
2. Missing Input Validation: Chat endpoint lacks request validation
3. No Rate Limiting: Could enable abuse of OpenAI API
4. CORS Configuration: Missing for production deployment

🐛 Potential Bugs

1. Weather API Error Handling (weather.ts:50-53): No fallback when API fails - just throws error
2. Timeout Issues: 5-second timeout may be insufficient for some API calls
3. Type Safety Gap: Weather API response not validated before use

🚀 Performance Considerations

Good:

• Conversation truncation prevents memory bloat
• Efficient actor lookup with getOrCreate
• AbortSignal timeouts prevent hanging requests

Could Improve:

• Consider caching weather data to reduce API calls
• Add connection pooling for high traffic scenarios

🧪 Test Coverage

Missing:

• No unit tests for core functionality
• No integration tests for API endpoints
• No error scenario testing
• No security testing

Recommendation: Add test files for:

• Actor state management
• Tool execution
• API endpoint behavior
• Error handling scenarios

📚 Documentation Quality

Excellent:

• Comprehensive README with setup instructions
• Clear API documentation with examples
• Architecture diagrams and interaction examples
• Proper site integration documentation

🔧 Recommended Fixes

Immediate (Security):

// Fix error exposure in actor.ts  
const errorMessage = "An error occurred processing your request"; // ✅ Generic

Short-term:

• Add input validation with Zod schemas
• Implement rate limiting
• Add proper error logging (separate from user errors)
• Validate external API responses

Long-term:

• Add comprehensive test suite
• Consider adding authentication for production use
• Add monitoring/observability features

🎯 Overall Assessment

This is a high-quality integration example that demonstrates proper architecture and clean implementation. The code is well-structured and follows TypeScript best practices. However, there are security issues that should be addressed before production use.

Recommendation: ✅ Approve with suggested changes - Address the error disclosure and add input validation for better security posture.

---

| Branch: 07-24-chore_mastra_example

[claude]

Claude finished @NicholasKissel's task —— View job

---

Code Review for Mastra Integration Documentation

I've completed a thorough review of this PR focusing on code quality, security, performance, and documentation standards.

Todo List:

• Read repository guidelines (CLAUDE.md)
• Review package.json changes for security/dependency issues
• Analyze new Mastra integration documentation
• Check sitemap changes for correctness
• Review yarn.lock for security vulnerabilities - no new deps added
• Evaluate documentation quality and completeness
• Check for security concerns in code examples
• Assess test coverage recommendations
• Provide comprehensive feedback summary

🔍 Review Summary

This PR adds comprehensive documentation for integrating Rivet with Mastra, an AI agents framework. The changes are primarily documentation-focused with proper sitemap integration.

✅ Strengths

Documentation Quality:

• Excellent structure with clear step-by-step setup instructions
• Comprehensive examples showing real-world usage patterns
• Good TypeScript integration with proper type definitions
• Clear API documentation with curl examples
• Proper integration with existing documentation structure

Technical Architecture:

• Sound integration pattern showing how Rivet Actors provide persistence for Mastra agents
• Good separation of concerns between actors, agents, and tools
• Proper state management with conversation history and memory persistence
• Well-designed API endpoints for chat functionality

⚠️ Security Concerns (Medium Priority)

Information Disclosure (mastra.mdx:105):

content: `Mastra Agent error: ${error.message}` // ❌ Exposes internal errors

Recommendation: Use generic error messages for users:

content: "An error occurred processing your request" // ✅ Safe

Missing Security Guidance:

• No input validation examples for API endpoints
• No rate limiting recommendations mentioned
• No CORS configuration guidance for production

🐛 Minor Issues

Documentation Completeness:

• Missing error handling best practices section
• No mention of monitoring/logging recommendations
• Could benefit from troubleshooting section

🚀 Performance Considerations

Good Practices:

• Conversation history truncation (mastra.mdx:71-73) prevents memory bloat
• Efficient actor lookup with getOrCreate pattern
• Proper async/await usage throughout examples

🧪 Test Coverage

Missing but Acceptable for Documentation:

• No unit tests for example code (expected for docs)
• Could benefit from mentioning testing strategies for production use
• No integration test examples provided

📁 File Changes Review

site/package.json: ✅ No dependency changes, just version updates
site/src/content/docs/integrations/mastra.mdx: ✅ Well-structured documentation
site/src/content/docs/integrations/index.mdx: ✅ Proper integration in AI section
site/src/sitemap/mod.ts: ✅ Correct sitemap entry added
site/public/llms*.txt: ✅ Proper SEO/crawling integration
yarn.lock: ✅ Standard lock file updates, no security concerns

🔧 Recommended Improvements

Immediate (Security):

// Fix error exposure in actor.ts example
const errorMessage = "An error occurred processing your request";

Short-term (Documentation Enhancement):

• Add input validation examples using Zod schemas
• Include rate limiting recommendations
• Add production security checklist
• Include CORS configuration guidance

Long-term (Nice to Have):

• Add troubleshooting section
• Include monitoring/observability examples
• Add testing strategy recommendations

🎯 Final Assessment

This is high-quality integration documentation that provides clear, practical examples for using Rivet with Mastra. The technical approach is sound and follows good practices. The main concern is the security issue with error message exposure, which should be addressed.

Recommendation: ✅ Approve with suggested changes - Fix the error disclosure issue and consider adding security guidance for production deployments.

The documentation significantly enhances Rivet's ecosystem by showing how to integrate with modern AI frameworks. Well done!

--- | Branch: 07-24-chore_mastra_example

[claude]

Claude finished @NicholasKissel's task —— View job

---

Code Review for Mastra Integration Documentation

I'll review this pull request for code quality, best practices, potential bugs, performance considerations, security concerns, and test coverage.

Todo List:

• Read repository guidelines (CLAUDE.md)
• Review package.json changes for security/dependency issues
• Analyze new Mastra integration documentation
• Check sitemap changes for correctness
• Review yarn.lock for security vulnerabilities - no new deps added
• Evaluate documentation quality and completeness
• Check for security concerns in code examples
• Assess test coverage recommendations
• Provide comprehensive feedback summary

🔍 Review Summary

This PR adds comprehensive documentation for integrating Rivet with Mastra, an AI agents framework. The changes are primarily documentation-focused with proper sitemap integration.

✅ Strengths

Documentation Quality:

• Excellent structure with clear step-by-step setup instructions
• Comprehensive examples showing real-world usage patterns
• Good TypeScript integration with proper type definitions
• Clear API documentation with curl examples
• Proper integration with existing documentation structure

Technical Architecture:

• Sound integration pattern showing how Rivet Actors provide persistence for Mastra agents
• Good separation of concerns between actors, agents, and tools
• Proper state management with conversation history and memory persistence
• Well-designed API endpoints for chat functionality

⚠️ Security Concerns (Medium Priority)

Information Disclosure (mastra.mdx:114):

let errorMessage = `Mastra Agent error: ${(error as Error).message}`; // ❌ Exposes internal errors

Recommendation: Use generic error messages for users:

const errorMessage = "An error occurred processing your request"; // ✅ Safe

Missing Security Guidance:

• No input validation examples for API endpoints
• No rate limiting recommendations mentioned
• No CORS configuration guidance for production

🐛 Minor Issues

Documentation Completeness:

• Missing error handling best practices section
• No mention of monitoring/logging recommendations
• Could benefit from troubleshooting section

🚀 Performance Considerations

Good Practices:

• Conversation history truncation (mastra.mdx:83-85) prevents memory bloat
• Efficient actor lookup with getOrCreate pattern
• Proper async/await usage throughout examples

🧪 Test Coverage

Missing but Acceptable for Documentation:

• No unit tests for example code (expected for docs)
• Could benefit from mentioning testing strategies for production use
• No integration test examples provided

📁 File Changes Review

site/package.json: ✅ No dependency changes, just version updates
site/src/content/docs/integrations/mastra.mdx: ✅ Well-structured documentation
site/src/content/docs/integrations/index.mdx: ✅ Proper integration in AI section
site/src/sitemap/mod.ts: ✅ Correct sitemap entry added
site/public/llms*.txt: ✅ Proper SEO/crawling integration
yarn.lock: ✅ Standard lock file updates, no security concerns

🔧 Recommended Improvements

Immediate (Security):

// Fix error exposure in actor.ts example
const errorMessage = "An error occurred processing your request";

Short-term (Documentation Enhancement):

• Add input validation examples using Zod schemas
• Include rate limiting recommendations
• Add production security checklist
• Include CORS configuration guidance

Long-term (Nice to Have):

• Add troubleshooting section
• Include monitoring/observability examples
• Add testing strategy recommendations

🎯 Final Assessment

This is high-quality integration documentation that provides clear, practical examples for using Rivet with Mastra. The technical approach is sound and follows good practices. The main concern is the security issue with error message exposure, which should be addressed.

Recommendation: ✅ Approve with suggested changes - Fix the error disclosure issue and consider adding security guidance for production deployments.

The documentation significantly enhances Rivet's ecosystem by showing how to integrate with modern AI frameworks. Well done!

--- | Branch: 07-24-chore_mastra_example

[graphite-app]

The environment variables example in the Mastra documentation is incomplete. The code block ends with a single backtick (``) instead of the proper closing triple backtick (```). This should be fixed to ensure proper markdown formatting.

Suggested change

``

  

*Spotted by [Diamond](https://app.graphite.dev/diamond/?org=rivet-gg&ref=ai-review-comment)*<i class='graphite__hidden'><br /><br />Is this helpful? React 👍 or 👎 to let us know.</i>