> ## Documentation Index
> Fetch the complete documentation index at: https://mcpjam-platform-api-keys.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Changelog

> Track the latest updates, features, and improvements to MCPJam Inspector

## Overview

This changelog tracks all notable changes to MCPJam Inspector. We follow [Semantic Versioning](https://semver.org/) and keep our changelog in the spirit of [Keep a Changelog](https://keepachangelog.com/).

## Latest Releases

### Version 1.1.0

#### Improved

* **Code Quality**
  * Improved code consistency and maintainability

### Recent Updates

#### Changed

* **Stateless MCP protocol version updated to `2026-07-28` RC**
  * The stateless transport protocol version has been updated from the retired `DRAFT-2026-v1` placeholder to the upstream RC literal `2026-07-28`, matching the canonical pin in `modelcontextprotocol/main`.
  * The protocol version picker in the inspector UI now shows **Latest (2025-11-25)** and **2026 RC (2026-07-28)** instead of "Latest" and "Draft".
  * The SDK constant `STATELESS_DRAFT_2026_V1` has been renamed to `LATEST_STATELESS_PROTOCOL_VERSION` and now equals `"2026-07-28"`.
  * **Migration required**: If you had servers pinned to `DRAFT-2026-v1`, you must re-select the protocol version in the inspector UI. Stored `DRAFT-2026-v1` pins are rejected by spec-conforming servers with a `-32004 UnsupportedProtocolVersionError`.

#### 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

* Follow our [GitHub repository](https://github.com/MCPJam/inspector) for the latest updates
* Join our [Discord community](https://discord.gg/JEnDtz8X6z) for announcements
* Check our [website](https://mcpjam.com) for release notes

## Reporting Issues

Found a bug or have a feature request? Please [open an issue](https://github.com/MCPJam/inspector/issues/new) on GitHub.