io.github.WYRE-AI/mimecast-mcp

Mimecast

Is the Mimecast MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.

MCP server for Mimecast email security: message queue, held messages, domains, and threats.

alive probed 2026-11-15 · unchanged since 2026-10-30

10tools

2.5ktokens in Claude Opus 5.5

1.2 %of Claude's 200k window

1.0×the median server

3.9 sto initialize

13 msto list tools

Run it: docker run -i --rm ghcr.io/wyre-ai/mimecast-mcp:v1.3.9 (stdio, probed in a container with the network off)
Host: ghcr.io
Reports itself as: mimecast-mcp 1.0.0
Capabilities: resources, tools
Instructions: none
Of a 1M window: 0.2 % of a 1M context window
Count: 2.5k tokens in Claude Opus 5.5, exact, measured 2026-10-30. With the Claude Code prefix mcp__…__ on each tool name: 2.6k. The o200k_base estimate is 1.4k. Counted again when the tool definitions change. Method.
Repository: https://github.com/WYRE-AI/mimecast-mcp
Website: https://github.com/WYRE-AI/mimecast-mcp
Registry: active, updated 2026-10-10 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.72×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
mimecast_find_message	512	298	21 %
mimecast_get_audit_events	510	297	21 %
mimecast_get_ttp_logs	467	272	19 %
mimecast_navigate	239	139	10 %
mimecast_get_threat_incidents	213	124	9 %

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

Servers that mention mimecast or messages or security.

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.