Could not find claude config path

[Ahmadzdddd]

After installing extension,

Can't install claude,

[rahulburman459]

“Hi, I’ve submitted a fix for this issue (#68). Kindly review when possible.”

[Ahmadzdddd]

Hello, did you push it to burp suite?

[rahulburman459]

Hi! I've tested the code fix locally and the configFilePath() function
now creates the Claude config folder and file automatically if they are
missing, instead of returning null.

However I don't have a full Burp Suite setup to test the complete
end-to-end flow. Could you please test the fix from PR #80 on your
machine and let me know if it resolves the issue for you?

[Ahmadzdddd]

I think that the default installation path of claude has been modified and do not match with what is identified with the burp extension

[thegh0stvz]

i also facing the same issue ?
any idea how to fix it ?

[rahulburman459]

Hi, I’ve updated the fix in PR #80 to improve config path detection.

Could you please check and confirm if it works on your setup?

[DEMON1A]

I don't think your fix would actually solve the problem @rahulburman459, I checked claude desktop MCP config path and for me it's within C:\Users\[username]\AppData\Local\Packages\Claude_pzs8sxrjxfjjc\LocalCache\Roaming\Claude (my best guess is the claude folder name is pretty much random for every installation on Windows)

You would actually need to go inside the user.home variable, which is C:\\Users\[username], Move forward inside within "AppData", "Local", "Packages" do a grep for any folder that starts with Claude_, then follow up with the rest of the folders in a static way

I forked the project: https://github.com/DEMON1A/mcp-server/tree/main and manually adjusted the path for windows to match my claude installation, re-compiled the library and imported it in Burp suite and everything went fine so far

Tested on the latest Claude Desktop release

Others looking for a quick fix can pretty much do the same by modifying this exact line @ https://github.com/PortSwigger/mcp-server/blob/main/src/main/kotlin/net/portswigger/mcp/providers/Provider.kt#L72

71. val basePath = when {
72.    os.contains("win") -> Path.of(home, "AppData", "Roaming", "Claude")
73.    os.contains("mac") || os.contains("darwin") -> Path.of(home, "Library", "Application Support", "Claude")
74.    os.contains("linux") -> Path.of(home, ".config", "Claude")
75.    else -> return null
76.}

You can pretty much do the same just by editing line 72