0.20.0

krillinai/OpenCreator0.20.0Feb 6, 2026by cliffhall

AI Summary

The 0.20.0 release focuses on stability and performance, fixing memory leaks and Windows hang issues in the client. It adds support for MCP Apps and resolves test failures caused by recent SDK updates.

Key Highlights

New MCP Apps support in Inspector
Fix for circular function calls causing memory leaks
Fix for Windows dev mode hanging
Resolution of test failures induced by MCP SDK update
Enablement of Dependabot for GitHub Actions

New Features

MCP Apps support

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