Jon Shea
fe0e62e011
- Implement HTTP Basic auth for OAuth token requests - Automatically sets selects auth method when OAuthClientProvider is configured with OAuthClientMetadata that has token_endpoint_auth_method=None. - Made OAuthClientMetadata.token_endpoint_auth_method optional to support the above auto-configuration. - Removed ` "token_endpoint_auth_method": "client_secret_post"` from the simple-auth-client example as is now auto-configured.
Simple Auth Client Example
A demonstration of how to use the MCP Python SDK with OAuth authentication over streamable HTTP or SSE transport.
Features
- OAuth 2.0 authentication with PKCE
- Support for both StreamableHTTP and SSE transports
- Interactive command-line interface
Installation
cd examples/clients/simple-auth-client
uv sync --reinstall
Usage
1. Start an MCP server with OAuth support
# Example with mcp-simple-auth
cd path/to/mcp-simple-auth
uv run mcp-simple-auth --transport streamable-http --port 3001
2. Run the client
uv run mcp-simple-auth-client
# Or with custom server URL
MCP_SERVER_PORT=3001 uv run mcp-simple-auth-client
# Use SSE transport
MCP_TRANSPORT_TYPE=sse uv run mcp-simple-auth-client
3. Complete OAuth flow
The client will open your browser for authentication. After completing OAuth, you can use commands:
list- List available toolscall <tool_name> [args]- Call a tool with optional JSON argumentsquit- Exit
Example
🔐 Simple MCP Auth Client
Connecting to: http://localhost:3001
Please visit the following URL to authorize the application:
http://localhost:3001/authorize?response_type=code&client_id=...
✅ Connected to MCP server at http://localhost:3001
mcp> list
📋 Available tools:
1. echo - Echo back the input text
mcp> call echo {"text": "Hello, world!"}
🔧 Tool 'echo' result:
Hello, world!
mcp> quit
👋 Goodbye!
Configuration
MCP_SERVER_PORT- Server URL (default: 8000)MCP_TRANSPORT_TYPE- Transport type:streamable-http(default) orsse