chrome-devtools-mcp-v1.5.0

ChromeDevTools/chrome-devtools-mcpchrome-devtools-mcp-v1.5.0Jul 3, 2026by browser-automation-bot

AI Summary

This release focuses on heap snapshot analysis by adding comparison and duplicate string detection tools, while improving CLI error messages, security, and performance through concurrent reads.

Key Highlights

New MCP tools for heap snapshot comparison
New tool to retrieve duplicate strings from heap snapshots
Improved CLI error messages to guide developers and AI agents
Enhanced security with secure PID directory permissions (0o700)
Performance optimization using concurrent reads

New Features

get_heapsnapshot_duplicate_strings MCP tool
MCP tools for heap snapshot comparison
Support for allow/block list in loadResource
Validation of extension-enforced output paths

Full Release Notes

## [1.5.0](https://github.com/ChromeDevTools/chrome-devtools-mcp/compare/chrome-devtools-mcp-v1.4.0...chrome-devtools-mcp-v1.5.0) (2026-07-03)


### 🎉 Features

* Add get_heapsnapshot_duplicate_strings MCP tool ([#2280](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2280)) ([67a56c0](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/67a56c0557729dc437e470ea934d7322faba56b0))
* Add MCP tools for heap snapshot comparison ([#2198](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2198)) ([5d7b656](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/5d7b6560504009cd1a16cc02db7e985cf7f71274))


### 🛠️ Fixes

* **cli:** improve error messages to guide AI agents and developers ([#2161](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2161)) ([cf00305](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/cf003051706619ca084235020f62a4d6902fb226))
* create PID directory with secure permissions (0o700) ([#2262](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2262)) ([7fa95d3](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/7fa95d3c33aa3e37374b0e39a6c00de322655554))
* respecte allow/block list in loadResouce ([#2254](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2254)) ([6a94663](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/6a9466378c13b6ccba91b54091ea83a5ca37a8db))
* validate extension-enforced output paths ([#2269](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2269)) ([a922814](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/a9228141ae2c51bf831ce0cac659e119cf0f4ae6))


### 📄 Documentation

* fix Antigravity config -y flag before npx positional args ([#2272](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2272)) ([604b38f](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/604b38f31951b291eb368dfe61f2d3714ccae778))
* fix formatting and indentation of tool descriptions ([#2275](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2275)) ([8d8cf12](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/8d8cf1299db9d9f371c1f278ccc3e598df22c615))


### ⚡ Performance

* use concurrent reads for `loadIssueDescriptions` ([#2249](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2249)) ([d144965](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/d1449654ac10031786e9d4741e781af26933907a))


### 🏗️ Refactor

* Merge MCP tools for comparing heap snapshots ([#2281](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2281)) ([3f4a49a](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/3f4a49a89a2dd33dc6fa728aa34bc26f0aa00905))