io.github.WYRE-AI/cisco-umbrella-mcp

Cisco Umbrella

Is the Cisco Umbrella MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.

MCP server for Cisco Umbrella's deployment, admin, policy, reporting, and investigate APIs.

alive probed 2026-11-15 · unchanged since 2026-10-31

31tools

6.3ktokens in Claude Opus 5.5

3.1 %of Claude's 200k window

2.5×the median server

782 msto initialize

3 msto list tools

Run it: docker run -i --rm ghcr.io/wyre-ai/cisco-umbrella-mcp:v1.0.3 (stdio, probed in a container with the network off)
Host: ghcr.io
Reports itself as: cisco-umbrella-mcp 0.1.0
Capabilities: logging, tools
Instructions: none
Of a 1M window: 0.6 % of a 1M context window
Count: 6.3k tokens in Claude Opus 5.5, exact, measured 2026-10-31. With the Claude Code prefix mcp__…__ on each tool name: 6.8k. The o200k_base estimate is 3.3k. Counted again when the tool definitions change. Method.
Repository: https://github.com/WYRE-AI/cisco-umbrella-mcp
Website: https://github.com/WYRE-AI/cisco-umbrella-mcp
Registry: active, updated 2026-10-22 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.91×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
umbrella_top_destinations	401	210	6 %
umbrella_total_requests	395	207	6 %
umbrella_activity	391	205	6 %
umbrella_identities	386	202	6 %
umbrella_top_categories	317	166	5 %

Other registry entries on ghcr.io, the ones next to this name; all of them.

Servers that mention umbrella.

The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.