0.20.0

vercel/streamdown0.20.0Feb 6, 2026by cliffhall

AI Summary

This release adds support for MCP Apps and resolves critical stability issues including Windows hanging and memory leaks.

Key Highlights

Fix Windows dev mode hanging
Fix circular function calls leading to memory leaks
Add MCP Apps support to Inspector

New Features

Add MCP Apps support to Inspector

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