MCP Server Diff

January 26, 2026

Version updated for https://github.com/SamMorrowDrums/mcp-server-diff to version v2.2.0.

This action is used across all versions by 6 repositories.

Go to the GitHub Marketplace to find the latest changes.

Action Summary

The MCP Server Diff GitHub Action automates the process of comparing the public interfaces of Model Context Protocol (MCP) servers between different versions. It identifies changes in tools, resources, prompts, and server capabilities by generating a detailed diff report and surfacing the results in GitHub’s Job Summary. This helps ensure visibility into how server updates affect the interface advertised to AI assistants, aiding in version control and API management.

Release notes

What’s Changed

feat: add automatic HTTP server lifecycle management
build: disable inline sourcemaps for deterministic dist
build: remove sourcemaps for deterministic dist
ci: only check dist/index.js, ignore sourcemaps
fix: format runner tests for CI
ci: add CI workflow for testing
fix: improve deterministic JSON normalization for stable diffs
feat: add integration tests with real MCP servers

Full Changelog: https://github.com/SamMorrowDrums/mcp-conformance-action/compare/initial...v2.2.0

Full Changelog: https://github.com/SamMorrowDrums/mcp-conformance-action/compare/v2.1.0...v2.2.0

Full Changelog: https://github.com/SamMorrowDrums/mcp-server-diff/compare/v2.1.8...v2.2.0