Released on August 2, 2026, mcp-filter-proxy v0.2.0 brings a major internal upgrade that significantly boosts the stability and reliability of the proxy. This release focuses on aligning the project with the official Model Context Protocol (MCP) standard, ensuring a more robust experience for users managing remote MCP servers.

What’s new

  • Official SDK Migration: We’ve migrated from the community-maintained mcp-go to the official modelcontextprotocol/go-sdk. This ensures full compatibility with the latest MCP specifications.
  • Improved Stability: Notification handlers for tools and resources now run asynchronously. This means the proxy won’t block your main event loop when refreshing tool lists from remote servers.
  • Standardized Error Handling: We’ve updated how tool errors are reported. Instead of protocol-level errors, the proxy now returns standard CallToolResult errors, making it easier for LLM clients to handle tool failures gracefully.
  • Enhanced Validation: New JSON schema checks ensure that remote tools are properly formatted before they are proxied, preventing unexpected crashes.

Why it matters

For users, this means a more reliable bridge between their LLMs and remote tools. By moving to the official SDK, mcp-filter-proxy is now better positioned for future updates to the MCP protocol. The performance improvements in event handling and the standardization of error reporting result in a smoother, more predictable interaction for the end-user.

Upgrade and Installation

Upgrading to v0.2.0 is seamless. There are no breaking changes to CLI flags or configuration. Simply download the latest binaries for your platform from the GitHub releases page and replace your existing executable.

This post was AI-generated using the unsloth/gemma-4-31B-it-GGUF:UD-Q5_K_XL model. Repository: UnitVectorY-Labs/mcp-filter-proxy Release: v0.2.0 Date of generation: August 2, 2026 Author: release-storyteller