This is a Model Context Protocol (MCP) server that supports remote MCP connections, with Cloudflare OAuth built-in.
It integrates tools powered by Workers Observability to debug and get insight into your Workers' logs and analytics.
The /mcp and /sse URLs use the same stateless SDK v2 handler and create a fresh server with request-scoped auth/account context for every request. /sse is not the deprecated HTTP+SSE transport. OAuth and application search bindings remain durable application/security state; no MCP protocol session or protocol Durable Object is retained.
Currently available tools:
| Category | Tool | Description |
|---|---|---|
| Workers Analytics | query_worker_observability |
Queries Workers Observability API to analyze logs and metrics from your Cloudflare Workers. Supports listing events, calculating metrics, and finding specific invocations |
| Schema Discovery | observability_keys |
Discovers available data fields in your Workers logs including metadata fields, worker-specific fields, and custom logged fields |
| Value Exploration | observability_values |
Finds available values for specific fields in Workers logs to help build precise filters for analytics queries |
This MCP server is still a work in progress, and we plan to add more tools in the future.
Can you tell me about any potential issues on this particular worker 'my-worker-name'?Show me the CPU time usage for my worker 'api-gateway' over the last 24 hoursWhat were the top 5 countries by request count for my worker yesterday?How many requests were made to my worker 'my-app' broken down by HTTP status code?Compare the error rates between my production and staging workers
Connect your MCP client directly to https://observability.mcp.cloudflare.com/mcp. If prompted, complete the Cloudflare OAuth flow in your browser. The tools become available after authorization.
Interested in contributing, and running this server locally? See CONTRIBUTING.md to get started.
