Oliver Kieselbach
6f8ce556b7
The unauthenticated /oauth/* routes carried no throttle (accessGuard covers
/mcp only), making /oauth/token an anonymous amplifier: every POST triggers
an outbound Entra call with the app's client_secret attached, so a flood
would get the app registration itself throttled by Entra — an org-wide auth
DoS requiring zero credentials.
- Per-source-IP sliding-window throttles as per-route middleware inside
createOAuthRouter: 20/min on /oauth/token, 60/min on register/authorize/
callback (MCP_OAUTH_TOKEN_RATE_LIMIT_PER_MINUTE / MCP_OAUTH_RATE_LIMIT_
PER_MINUTE). Own bucket map keyed `${kind}:${ip}` so OAuth floods never
burn the /mcp pre-auth budget and vice versa; pruned by the shared reaper
and capped by MAX_RATE_BUCKET_ENTRIES. 429s reuse respondRateLimited, so
the existing `[mcp-auth] 429 kind=` log/KQL pattern covers the new kinds.
.well-known discovery docs stay unthrottled (static JSON, no outbound work).
- grant_type allowlist on /oauth/token: missing -> invalid_request, anything
but authorization_code/refresh_token -> unsupported_grant_type, rejected
before the client secret leaves the building. Policy now lives in the
proxy instead of relying on Entra-side accidents (pinned scope, uncopied
fields) to reject client_credentials/ROPC/device-code.
- Tests: oauth-rate-limit.test.ts (tiny pinned budgets, bucket independence
in both directions) + grant_type allowlist block in oauth-register.test.ts.
Env pins in security-guards.test.ts hoisted above the first oauth.js
import — oauth.ts now (transitively) loads access-guard.ts at import time.
MCP server v1.4.5 -> 1.4.6. vitest 345 passed / 41 skipped, tsc clean.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Autopilot Monitor
Advanced monitoring and troubleshooting solution for Windows Autopilot deployments. Gain full visibility into every enrollment session with a detailed event timeline, fleet health dashboards, and session reporting. Define custom analysis rules to automatically detect issues and gather rules to collect targeted evidence. Retrieve diagnostics packages on demand, configure agent settings like auto-reboot behavior and automatic timezone adjustment — all managed centrally from the web dashboard.
Private Preview
Autopilot Monitor is currently running as a Private Preview. Visit autopilotmonitor.com to request access and learn more.
Overview
Autopilot Monitor provides real-time tracking, intelligent diagnostics, and automated troubleshooting for Windows Autopilot enrollment processes. It consists of:
- Bootstrap Script — PowerShell script deployed via Intune that starts monitoring early in the enrollment process
- Monitoring Agent — Lightweight .NET application that collects telemetry and evidence during enrollment
- Backend API — Azure Functions-based ingestion and processing pipeline
- Web Dashboard — Next.js application for real-time monitoring and fleet analytics
Architecture
For detailed information about the system architecture, components, and data flow, see Architecture Documentation.
Documentation
Full documentation is available at autopilotmonitor.com/docs
License
This project uses a split licensing model:
- MIT License — Agent (
src/Agent/) and Shared library (src/Shared/) — unrestricted use on end-user devices - AGPL-3.0 — Backend (
src/Backend/), Web Dashboard (src/Web/), and MCP Server (src/McpServer/) — server-side components remain open source
See LICENSE for full details.