# What's new in DevTools (Chrome 149)

DevFeed: [What's new in DevTools (Chrome 149)](<https://devfeed.tech/articles/what-s-new-in-devtools-chrome-149-4139.md>)

Original publisher: [Read original article](<https://developer.chrome.com/blog/new-in-devtools-149?hl=en>)

Author: Matthias Rohmer X GitHub LinkedIn Bluesky

Published: 2026-06-02T07:00:00Z

Content type: release

Language: en

Sources: [developer.chrome.com: Blog](<https://devfeed.tech/sources/developer-chrome-com-blog.md>)

Topics: [Developer Tools](<https://devfeed.tech/topics/developer-tools.md>), [AI-assisted coding](<https://devfeed.tech/topics/ai-assisted-coding.md>), [debugging](<https://devfeed.tech/topics/debugging.md>), [Web Development](<https://devfeed.tech/topics/web-development.md>)

Tags: [agents](<https://devfeed.tech/tags/agents.md>), [ai](<https://devfeed.tech/tags/ai.md>), [ai-coding](<https://devfeed.tech/tags/ai-coding.md>), [announcement](<https://devfeed.tech/tags/announcement.md>), [chrome](<https://devfeed.tech/tags/chrome.md>), [cli](<https://devfeed.tech/tags/cli.md>), [code-completion](<https://devfeed.tech/tags/code-completion.md>), [css](<https://devfeed.tech/tags/css.md>), [debugging](<https://devfeed.tech/tags/debugging.md>), [gemini](<https://devfeed.tech/tags/gemini.md>), [http](<https://devfeed.tech/tags/http.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [mcp](<https://devfeed.tech/tags/mcp.md>), [mcp-server](<https://devfeed.tech/tags/mcp-server.md>), [release](<https://devfeed.tech/tags/release.md>), [tools](<https://devfeed.tech/tags/tools.md>)

## AI overview

Chrome 149 updates DevTools for agents and AI assistance, adding stable MCP server and CLI support, experimental WebMCP debugging, and richer page-analysis features.

## Source excerpt

DevTools for agents is stable, AI assistance gets major upgrade with Lighthouse and widgets, new WebMCP debugging tools.