M
MastraAI•2w ago
Eric Burel

Client does not support MCP Roots, using allowed directories set from server args:

Hi folks, I get this error when starting a filesystem MCP server like so: 
    filesystem: {
            // Le client va déclencher  lui-même le programme qui agit comme serveur MCP
            // (en cas d'erreur, testez la commande à la main)
            "command": "npx",
            "args": [
                "-y",
                "@modelcontextprotocol/server-filesystem",
                // Folder must exist already
                // can only write temporary files
                "."
            ]
    filesystem: {
            // Le client va déclencher  lui-même le programme qui agit comme serveur MCP
            // (en cas d'erreur, testez la commande à la main)
            "command": "npx",
            "args": [
                "-y",
                "@modelcontextprotocol/server-filesystem",
                // Folder must exist already
                // can only write temporary files
                "."
            ]
` Secure MCP Filesystem Server running on stdio Client does not support MCP Roots, using allowed directories set from server args: [ '/home/eric-burel/code/formations/mastra-code/jour-2-agents/stackpicker-mastra/.mastra/output' ] Using /tmp for instance is not possible. The file will always be written in .mastra/output That's ok for know but why this behaviour?
2 Replies
Mastra Triager
Mastra Triager•2w ago
📝 Created GitHub issue: https://github.com/mastra-ai/mastra/issues/8660
GitHub
[DISCORD:1425505184418631730] Client does not support MCP Roots, us...
This issue was created from Discord post: https://discord.com/channels/1309558646228779139/1425505184418631730 Hi folks, I get this error when starting a filesystem MCP server like so: filesystem: ...
Daniel Lew
Daniel Lew•2w ago
Hi @Eric Burel this is known that our MCPClient doesn't support roots. It's not going to be prioritized to add support for this as roots is still a feature not used by many yet but we'd love a PR if you are curious about implementing it!

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