Starstruk Logo MarkStarstruk

chrome-devtools-mcp-v0.21.0

ChromeDevTools/chrome-devtools-mcpchrome-devtools-mcp-v0.21.0Apr 1, 2026by browser-automation-bot

AI Summary

Introduces a memory leak detection skill and fixes several CLI and configuration issues, including handling userDataDir and wrapping configuration correctly.

Key Highlights

  • Memory leak detection skill
  • CLI userDataDir handling fix
  • Configuration wrapping improvement

New Features

  • add a skill for detecting memory leaks using take_memory_snapshot tool
  • mark lighthouse and memory as non-read-only
  • wrap .mcp.json config in mcpServers key

Full Release Notes

## [0.21.0](https://github.com/ChromeDevTools/chrome-devtools-mcp/compare/chrome-devtools-mcp-v0.20.3...chrome-devtools-mcp-v0.21.0) (2026-04-01)


### 🎉 Features

* add a skill for detecting memory leaks using take_memory_snapshot tool ([#1162](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/1162)) ([d19a235](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/d19a2350f975ec2fbf8ee61b35163a48c0146c32))


### 🛠️ Fixes

* **cli:** avoid defaulting to isolated when userDataDir is provided ([#1258](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/1258)) ([73e1e24](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/73e1e24b26f9e42a83116b586e34d47276a6a2fa))
* list_pages should work after selected page is closed ([#1145](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/1145)) ([2664455](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/26644553028d8404fd65a005ea9c19a278671f4d))
* mark lighthouse and memory as non-read-only ([#1769](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/1769)) ([bec9dae](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/bec9dae2d26b728feedcd660189f386e6228f3ae))
* **telemetry:** record client name ([9a47b65](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/9a47b657d7b17b9bc64508530c93d55e8033e2a6))
* versioning for Claude Code plugin ([#1233](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/1233)) ([966b86f](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/966b86f3aaa9f87c2599b954c4e7f990c2a697ea))
* wrap .mcp.json config in mcpServers key ([#1246](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/1246)) ([c7948cf](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/c7948cf0621d80b080220d4cfd36b62bef2790b9))


### 📄 Documentation

* Command Code CLI instructions for MCP server ([0a7c0a7](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/0a7c0a74b471935a3e2f5ca0fd93556e8e5165ec))
* provide disclaimer about supported browsers ([#1237](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/1237)) ([8676b72](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/8676b7216c66dfd323c2f6c272544a75dbab4dba))


### 🏗️ Refactor

* set process titles for easier debugging ([#1770](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/1770)) ([0fe3896](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/0fe3896d85c74ce8b2dc189fe8a310727f795344))