Spanly

The product is an observability platform for the Model Context Protocol that monitors, debugs and operates MCP servers, detecting client-specific tool, prompt and resource failures, schema errors and performance issues. It sells to engineering and operations teams at B2B SaaS companies that have added an MCP server to an existing product and carry on-call responsibility. It is positioned as an MCP-protocol layer that sits on top of general-purpose APMs such as Datadog, Sentry and New Relic, which do not model MCP semantics.

Key features

• Real-time tracing for MCP requests
• Error tracking for tool calls
• Performance metrics and durations
• Health monitors for MCP servers
• Tool prompt resource inventory
• Uptime monitoring on schedule
• Alert routing via Slack and PagerDuty
• Audit log of every action
• Single sign-on
• Public status board
• W3C trace context propagation
• Manifest and schema scanning