chrome-devtools-mcp-v1.3.0

cjpais/Handychrome-devtools-mcp-v1.3.0Jun 18, 2026by browser-automation-bot

AI Summary

This release introduces new heap snapshot analysis tools and improves Chrome DevTools integration for MCP servers. It adds functionality to retrieve heap snapshot dominators and retaining paths, alongside enhancements for page listing and screenshot sizing.

Key Highlights

Add get_heapsnapshot_dominators MCP tool
Add retaining paths MCP tool
Add get_heapsnapshot_edges MCP tool
Include page title in list_pages output
Add CLI options to cap screenshot size at the source

New Features

get_heapsnapshot_dominators MCP tool
retaining paths MCP tool
get_heapsnapshot_edges MCP tool
page title in list_pages output
screenshot CLI options to cap screenshot size at the source

Full Release Notes

## [1.3.0](https://github.com/ChromeDevTools/chrome-devtools-mcp/compare/chrome-devtools-mcp-v1.2.0...chrome-devtools-mcp-v1.3.0) (2026-06-18)


### 🎉 Features

* Add get_heapsnapshot_dominators MCP tool ([#2215](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2215)) ([08c234e](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/08c234ea4b14b0ba0906deeca396873614a8c063))
* Add retaining paths MCP tool ([#2187](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2187)) ([a97c642](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/a97c642d43d19fc5198038a7544ff41528ddc316))
* Add the get_heapsnapshot_edges MCP tool ([#2180](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2180)) ([4f8eb7a](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/4f8eb7ad6beecc58f56ec383f9ff43549a5604d4))
* include page title in list_pages output ([#2166](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2166)) ([b646feb](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/b646feb4f33743a5ecdc6c5e3744e98f86374af3))
* **screenshot:** add CLI options to cap screenshot size at the source ([#1823](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/1823)) ([55c8a54](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/55c8a541d4f842056db6bc843e54117b07bf06c1))
* Use HeapSnapshotProxy.nodeIndexById ([#2193](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2193)) ([6bd8c91](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/6bd8c91678035b5aa18ee40f72e1f630aa528837))


### 🛠️ Fixes

* handle missing third-party tool toolGroup description gracefully ([#2224](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2224)) ([8fe398e](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/8fe398eb5d6ee87edb51d4e37570d04b02679346))
* handle screencast file extensions case-insensitively and clean up temp dir on failure ([#2207](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2207)) ([ba80096](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/ba80096521da437a834953f697c4c98bcbd6e658))
* limit windows test concurrency ([#2205](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2205)) ([e77101e](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/e77101e5dc53f9f9541eb91916eedb53495544cc))
* Reset toolGroups before gathering toolGroups ([#2200](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2200)) ([ed02047](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/ed02047ae90f25c4c15adb8fd7e224b963f43135))
* return error message when screencast_stop is called with no active recording ([#2209](https://github.com/ChromeDevTools/chrome-devtools-mcp/issues/2209)) ([9e32002](https://github.com/ChromeDevTools/chrome-devtools-mcp/commit/9e32002a6947ff695e463a5fefa99a7f66f19403))