Error validating server identity: TypeError: Failed to fetch

[PandaLIU-1111]

[joshrobertsv2]

I had the same error.I am curious, did you previously update to a new version of this package or did you update your macOS recently?

[joshrobertsv2]

@PandaLIU-1111 I was able to resolve this issue by uninstalling the package, removing the chrome extension, and deleting the browser cache. Then run the server npx @agentdeskai/browser-tools-server@1.2.0 in your terminal ti run the server, re-install the chrome extension, and then it worked!

[PandaLIU-1111]

I had the same error.I am curious, did you previously update to a new version of this package or did you update your macOS recently?

My macOS version is 15.3.1 (24D70), and the package version is 1.2.0.

[mydaoyuan]

same as me

[lukeborque96]

@PandaLIU-1111 @mydaoyuan as @joshrobertsv2 said, I was getting the same error and spent all day yesterday tryna fix it. What worked for me was uninstalling the server, clearing npm cache, clearing browser cache and removing chrome extension. Then 1. installing the server npx @agentdeskai/browser-tools-server@1.2.0 2. Cloning mcp repo 3. And installing chrome extension again.
note: you have to have the dev tool(inspect page) open for mcp to run

[ImBIOS]

npx @agentdeskai/browser-tools-server@1.2.0

https://browsertools.agentdesk.ai/installation