AuthProbe MCP OAuth Diagnostics

Example Use Cases

• 1

  Validate OAuth discovery and protected-resource metadata behavior in MCP servers.

• 2

  Debug where MCP OAuth flows diverge from RFC 9728 and RFC 8414.

• 3

  Reproducible evidence bundles for triaging auth regressions and cross-team handoffs.

Description

AuthProbe is an MCP server tool designed to help MCP server authors, client implementers, and platform teams diagnose and isolate OAuth authentication failures. It performs a step-by-step scan of the MCP OAuth discovery and authentication process, providing detailed funnel views and RFC-based explanations of failures. It supports integration with LLMs for enhanced failure analysis and can run as a stdio MCP server or via HTTP bridging.