[BUG] mcp add incorrectly escapes command line arguments
Resolved 💬 2 comments Opened Mar 16, 2025 by raghavsethi Closed Mar 17, 2025
Environment
- Platform (select one): Anthropic API
- Claude CLI version: 0.2.45
- Operating System: macOS 15.3.2
- Terminal: iTerm2
Bug Description
Unable to provide command line arguments with spaces/parens
Steps to Reproduce
claude mcp add
Name: fetch │
│ Scope: global │
│ Command: uvx │
│ Arguments: mcp-server-fetch --user-agent "Test"claude
> /mcp
⎿ MCP Server Status
• fetch: connectedclaude mcp add
Name: fetch │
│ Scope: global │
│ Command: uvx │
│ Arguments: mcp-server-fetch --user-agent "Test Test"claude --mcp-debug
MCP server "fetch" Connection failed: MCP error -32000: Connection closed
╭─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╮
│ > Try "how does src/App.tsx work?" │
╰─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
1 MCP server failed to connect (see /mcp for info)Expected Behavior
Cmdline args with spaces to work
Actual Behavior
They are being incorrectly passed to mcp server
Additional Context
Can confirm that npx @modelcontextprotocol/inspector has the same issue, but that it can be fixed by proper escaping
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