mcp-cli
A CLI inspector for the Model Context Protocol
https://github.com/user-attachments/assets/4cd113e9-f097-4c9d-b391-045c5f213183
Features
- Run MCP servers from various sources
- List Tools, Resources, Prompts
- Call Tools, Read Resources, Read Prompts
- OAuth support for SSE and Streamable HTTP servers
Usage
Run without arguments
This will use the config file of Claude Desktop.
Run with a config file
npx @wong2/mcp-cli -c config.json
The config file has the same format as the Claude Desktop config file.
Run servers from NPM
npx @wong2/mcp-cli npx <package-name> <args>
Add --pass-env if the server needs environment variables from your current shell.
Run locally developed server
npx @wong2/mcp-cli node path/to/server/index.js args...
Add --pass-env if the server needs environment variables from your current shell.
Connect to a running server over Streamable HTTP
npx @wong2/mcp-cli --url http://localhost:8000/mcp
Connect to a running server over SSE
npx @wong2/mcp-cli --sse http://localhost:8000/sse
Non-interactive mode
Run a specific tool, resource, or prompt without interactive prompts:
npx @wong2/mcp-cli [--config config.json] <command> <server-name>:<target> [--args '{}']
Examples:
# Call a tool without arguments
npx @wong2/mcp-cli -c config.json call-tool filesystem:list_files
# Call a tool with arguments
npx @wong2/mcp-cli -c config.json call-tool filesystem:read_file --args '{"path": "package.json"}'
# Read a resource
npx @wong2/mcp-cli -c config.json read-resource filesystem:file://system/etc/hosts
# Use a prompt
npx @wong2/mcp-cli -c config.json get-prompt filesystem:create_summary --args '{"text": "Hello world"}'
This mode is useful for scripting and automation, as it bypasses all interactive prompts and executes the specified primitive directly.
Purge stored data (OAuth tokens, etc.)
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