> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mcp-use.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Version 1.3.12

> Middleware introduction and documentation updates

export const Contributors = props => {
  let users = [];
  if (props.usernames) {
    users = Array.isArray(props.usernames) ? props.usernames : String(props.usernames).split(",").map(u => u.trim());
  } else if (props.users) {
    users = String(props.users).split(",").map(u => u.trim());
  }
  if (users.length === 0) return null;
  return <div>
      <span className="text-base font-medium text-zinc-600 dark:text-zinc-300">Contributors</span>
      <div className="flex items-center" style={{
    marginTop: '8px'
  }}>
        {users.map((username, index) => <a key={username} href={`https://github.com/${username}`} target="_blank" rel="noopener noreferrer" title={`@${username}`} className="relative rounded-full transition-all duration-200 hover:z-50 hover:scale-110 block" style={{
    marginLeft: index === 0 ? 0 : '-8px',
    zIndex: users.length - index,
    lineHeight: 0
  }}>
            <img noZoom src={`https://github.com/${username}.png`} alt={`@${username}`} width="32" height="32" style={{
    display: 'block',
    margin: 0
  }} className="rounded-full ring-2 ring-zinc-100 dark:ring-zinc-900" />
          </a>)}
      </div>
    </div>;
};

<Card img="https://mcp-use.com/api/og/release?v=1.3.12" title="Release 1.3.12" href="https://github.com/mcp-use/mcp-use/releases/tag/1.3.12">
  This release focuses on middleware introduction and comprehensive documentation improvements. The most significant additions include a new middleware system and automatic API documentation generation.
</Card>

## New Features

### Middleware System

**[PR #269](https://github.com/mcp-use/mcp-use/pull/269)**

Introduced a comprehensive middleware system that allows for request/response interception and processing. The middleware framework supports custom logic injection, metrics collection, and request transformation capabilities.

For a detailed technical deep-dive into the middleware architecture and design decisions, see the [Middleware Pipeline PR](https://github.com/mcp-use/mcp-use/pull/269).

### Automatic API Documentation

**[PR #301](https://github.com/mcp-use/mcp-use/pull/301)**

Implemented automatic API documentation generation to streamline the development workflow. This feature automatically generates comprehensive API references from code annotations and docstrings, ensuring documentation stays current with code changes.

## Bug Fixes & Improvements

### Tool Result Standardization

**[PR #288](https://github.com/mcp-use/mcp-use/pull/288)**

Fixed tool result formatting to ensure consistent output across different MCP servers and tools. The system now returns tool results in a standardized format, improving compatibility and predictability.

### Duplicate User Message Prevention

**[PR #287](https://github.com/mcp-use/mcp-use/pull/287)**

Resolved an issue where user messages were being duplicated in conversation history, particularly when memory features were enabled. The fix ensures clean conversation tracking and prevents redundant message storage.

### Agent Memory Enhancement

**[PR #187](https://github.com/mcp-use/mcp-use/pull/187)**

Improved agent memory handling to prevent duplicate user queries when memory is enabled. This enhancement ensures more efficient memory usage and cleaner conversation flow.

### Test Server Execution Fix

**[PR #298](https://github.com/mcp-use/mcp-use/pull/298)**

Fixed test server execution issues by properly using executable paths for shared dependencies. This improvement ensures reliable test execution across different environments.

## Maintenance & Documentation

### Middleware Metrics Enhancement

**[PR #299](https://github.com/mcp-use/mcp-use/pull/299)**

Enhanced middleware metrics collection for better performance and maintainability. The updated system provides more accurate metrics and improved observability for MCP operations.

### Documentation Enhancements

**[PRs #301](https://github.com/mcp-use/mcp-use/pull/301), [#282](https://github.com/mcp-use/mcp-use/pull/282)**

Comprehensive documentation updates including:

* Enhanced API reference generation
* Updated TypeScript integration examples
* Removed deprecated `from_dict` method references
* Improved developer onboarding materials

### Docker Networking Documentation

**[PR #286](https://github.com/mcp-use/mcp-use/pull/286)**

Added documentation addressing common Docker networking issues, helping developers troubleshoot containerized MCP server deployments.

### Limited Memory Example

**[Commit 6a807a1](https://github.com/mcp-use/mcp-use/commit/6a807a1)**

Added practical example demonstrating limited memory usage patterns for MCP agents, showcasing efficient memory management techniques.

## Automated Updates

### Dependency Management

**[PR #267](https://github.com/mcp-use/mcp-use/pull/267) by @github-actions\[bot]**

Regular automated updates to dependent package information, ensuring compatibility with the latest ecosystem versions and maintaining security posture.

### Documentation Workflow Improvements

**[PRs #173](https://github.com/mcp-use/mcp-use/pull/173), [#301](https://github.com/mcp-use/mcp-use/pull/301)**

Enhanced documentation workflows with:

* Mintlify CLI integration for improved documentation generation
* Link checking to ensure documentation integrity
* Automated API reference updates

## Contributors

Thank you to all contributors who made this release possible:

<Contributors users="pietrozullo,renvins" />