0.20.0

Rich-Harris/degit0.20.0Feb 6, 2026by cliffhall

AI Summary

The 0.20.0 release focuses on stability improvements for the MCP Inspector, addressing memory leaks and hanging issues, and introduces MCP Apps support.

Key Highlights

Fixed async sampling test
Fixed dev mode hanging on Windows
Fixed circular function calls leading to memory leak
Added MCP Apps support to Inspector
Fixed test failures induced by MCP SDK update

New Features

MCP Apps support
Stability fixes for memory leaks and hanging
Dependabot integration

Full Release Notes

## What's Changed
* Fix async sampling test by @cliffhall in https://github.com/modelcontextprotocol/inspector/pull/1035
* fix(client): fix dev mode hanging on Windows by @olaservo in https://github.com/modelcontextprotocol/inspector/pull/1051
* fix(client): circular function calls leads to memory leak by @dzhulk in https://github.com/modelcontextprotocol/inspector/pull/1049
* Enable Dependabot for GitHub Actions by @koic in https://github.com/modelcontextprotocol/inspector/pull/1048
* Bump the npm_and_yarn group across 1 directory with 3 updates by @dependabot[bot] in https://github.com/modelcontextprotocol/inspector/pull/1065
* Fixed test failures induced by MCP SDK update by @BobDickinson in https://github.com/modelcontextprotocol/inspector/pull/1067
* Add MCP Apps support to Inspector by @cliffhall in https://github.com/modelcontextprotocol/inspector/pull/1044
* Bump version to 0.20.0 by @olaservo in https://github.com/modelcontextprotocol/inspector/pull/1070

## New Contributors
* @dzhulk made their first contribution in https://github.com/modelcontextprotocol/inspector/pull/1049

**Full Changelog**: https://github.com/modelcontextprotocol/inspector/compare/0.19.0...0.20.0