Skip to main content

​
Overview

This changelog tracks all notable changes to MCPJam Inspector. We follow Semantic Versioning and keep our changelog in the spirit of Keep a Changelog.

​
Latest Releases

​
Version 1.1.0

​
Improved

  • Code Quality
    • Improved code consistency and maintainability

​
Recent Updates

​
Added

  • OAuth Protocol 2025-03-26 Support
    • Added support for original MCP OAuth specification (2025-03-26)
    • Direct RFC8414 discovery from MCP server base URL with fallback endpoints
    • PKCE required for all clients
    • DCR and pre-registered client registration strategies
  • OAuth Debugger Enhancements
    • Edit Config button to modify server settings without reconnecting
    • Copy logs feature with guide and raw formats for debugging
    • Deprecated transport detection with migration guidance for HTTP+SSE servers
    • RFC 8707 compliant resource URL canonicalization
  • GPT-5 Model Support
    • Added support for GPT-5 model variants: gpt-5, gpt-5-mini, gpt-5-nano, gpt-5-chat-latest, gpt-5-pro, gpt-5-codex
    • Organization verification notice for GPT-5 access

​
Improved

  • OAuth Flow
    • Refined diagram focusing and zoom behavior for better step visualization
    • Improved error handling for expected 4xx responses during transport detection
    • Enhanced header merging in OAuth state machines across all protocol versions
  • Error Handling
    • Enhanced streaming error handling in chat interface
    • Errors now display as inline alerts instead of failing silently
    • Better error messages from AI providers

​
Version 1.0.0

​
Added

  • MCP Server Connection Management
    • Support for STDIO, SSE, and Streamable HTTP transports
    • Multi-server connection support
    • Real-time connection status monitoring
  • LLM Playground
    • OpenAI integration (GPT-3.5/4)
    • Anthropic Claude integration (Claude 2/3)
    • DeepSeek AI support (DeepSeek R1)
    • Ollama local model compatibility
    • Interactive chat interface with streaming responses
  • Tools & Resources Testing
    • Tool execution and validation
    • Resource schema verification
    • Prompt testing interface
    • Real-time parameter validation
  • OAuth 2.0 Testing
    • Guided OAuth flow setup
    • Token management
    • Scope verification
    • Refresh token handling
  • MCP Evals
    • Automated compliance testing
    • Custom evaluation framework
    • Test result reporting
    • Performance benchmarking
  • Developer Tools
    • Comprehensive logging system
    • Request/response tracing
    • Error reporting and analysis
    • Performance monitoring

​
Improved

  • Enhanced UI/UX with modern design
  • Better error messages and debugging support
  • Optimized performance for large MCP responses
  • Improved documentation and examples

​
Fixed

  • Various bug fixes and stability improvements
  • Memory leak fixes in long-running sessions
  • Edge cases in MCP protocol handling

​
Coming Soon

We’re actively working on new features and improvements:
  • Enhanced evaluation templates
  • More LLM provider integrations
  • Advanced debugging tools
  • Performance analytics dashboard
  • CI/CD integration support

​
Stay Updated

​
Reporting Issues

Found a bug or have a feature request? Please open an issue on GitHub.