✨ Universal Protocol Ready: 2026-07-28 (Stateless Core), 2025-11-25, 2025-06-18 & 2024-11-05

Synthetic Health & Schema Drift Sentinel for Remote MCP Servers

Traditional uptime monitors stop at HTTP 200. MCP Sentinel executes real JSON-RPC 2.0 protocol handshakes, detects breaking tool schema mutations, and prevents AI agents from crashing.

⚡ Free Live Protocol & Security Audit
Tests JSON-RPC 2.0 handshake, schema validity (Ajv), tool drift, and secret leaks in <500ms.
Verdict
OPERATIONAL
Latency
42ms
Tools Found
6 tools
Security Scan
Clean
Live Dynamic GitHub README Badge:
[![MCP Sentinel Status](https://mcp-sentinel.pasihakamaki.workers.dev/badge/demo/status.svg)](https://mcp-sentinel.pasihakamaki.workers.dev)

Why Generic APMs Miss 80% of MCP Failures

Feature / Inspection Layer Generic HTTP Ping (Pingdom / Better Stack) MCP Sentinel
Protocol Awareness HTTP status code only (200 OK) Full JSON-RPC 2.0 Handshake & Protocol Negotiation
Universal Protocol Support ❌ Legacy or custom only ✅ Modern 2026-07-28 Stateless Core, 2025-11-25 Icons, 2025-06-18 Typed Output & 2024-11-05 Handshake
SSE Event Handshake ❌ Dropped after GET ✅ Subscribes to stream & extracts dynamic endpoint URLs
Tool Schema Validation ❌ None ✅ Ajv JSON Schema draft-07/2020-12 compliance
Breaking Schema Drift ❌ Blind to deleted parameters ✅ Instant AST diff alerts when tools mutate
Secret & API Token Scan ❌ None ✅ Continuous entropy audit for leaked OpenAI/AWS keys

Simple, Predictable Pricing

Prevent agent downtime on corporate cards with zero setup friction.

Free Community

$0

Essential health checks for open-source MCP builders.

  • 1 remote MCP server
  • 30-minute check intervals
  • Dynamic GitHub status badge
  • Email incident notification
MOST POPULAR

Developer Pro

$19 / month

For engineers running production agents and tools.

  • Up to 5 remote MCP servers
  • 1-minute synthetic checks
  • Breaking Schema Drift alerts
  • Slack & Discord Incoming Webhooks
  • 30-day historical latency logs

Team

$49 / month

For agencies and enterprise agent engineering teams.

  • Up to 20 remote MCP servers
  • Continuous Secret & Token leak scanning
  • Multi-region synthetic ping
  • PagerDuty & Custom Webhooks
  • SLA Guarantee (99.9%)