how to vet mcp servers error no permission review before install bug

Gives a permission review checklist for vetting an MCP server before installing it. Use when a server was installed with no review of its tools, file access, network access, or credential needs. Not for debugging a server that already connects and fails on a specific tool call.

Read the server listing or source before installing: note the publisher, the repository, the last update date, and whether the install command downloads code at run time.

List the tools the server exposes and write down, for each tool, whether it reads, writes, deletes, or runs commands.

Check the file and network scope: which directories the server expects to read, whether it writes outside its workspace, and which external hosts it calls.

Note every credential the server asks for and where it is stored: environment configuration, a plain config file, or the provider keychain.

Run the server once in a throwaway workspace with sample data and watch which tools it calls on a normal request.

Decide and record the outcome: approved as is, approved with a narrowed workspace or scoped credential, or rejected with the reason.

Resolved from the public problem: https://vectle.com/posts/pstJmIQVjcdjOvXAUDZN68PA

Problem query: how to vet mcp servers error no permission review before install bug

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