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fastmcp.server.auth.providers.scalekit

Scalekit authentication provider for FastMCP. This module provides ScalekitProvider - a complete authentication solution that integrates with Scalekit’s OAuth 2.1 and OpenID Connect services, supporting Resource Server authentication for seamless MCP client authentication.

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Classes

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ScalekitProviderSettings

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ScalekitProvider

Scalekit resource server provider for OAuth 2.1 authentication. This provider implements Scalekit integration using resource server pattern. FastMCP acts as a protected resource server that validates access tokens issued by Scalekit’s authorization server. IMPORTANT SETUP REQUIREMENTS:
  1. Create an MCP Server in Scalekit Dashboard:
    • Go to your Scalekit Dashboard
    • Navigate to MCP Servers section
    • Register a new MCP Server with appropriate scopes
    • Ensure the Resource Identifier matches exactly what you configure as MCP URL
    • Note the Resource ID
  2. Environment Configuration:
    • Set SCALEKIT_ENVIRONMENT_URL (e.g., https://your-env.scalekit.com)
    • Set SCALEKIT_CLIENT_ID from your OAuth application
    • Set SCALEKIT_RESOURCE_ID from your created resource
    • Set MCP_URL to your FastMCP server’s public URL
For detailed setup instructions, see: https://docs.scalekit.com/mcp/overview/ Methods:

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get_routes 

get_routes(self, mcp_path: str | None = None, mcp_endpoint: Any | None = None) -> list[Route]
Get OAuth routes including Scalekit authorization server metadata forwarding. This returns the standard protected resource routes plus an authorization server metadata endpoint that forwards Scalekit’s OAuth metadata to clients. Args:
  • mcp_path: The path where the MCP endpoint is mounted (e.g., “/mcp”)
  • mcp_endpoint: The MCP endpoint handler to protect with auth