io.github.WYRE-AI/petra-mcp

Petra Security

Is the Petra Security MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-07.

Read-only Petra Security MCP: M365 compromise incidents, failed attacks, posture, tenants, usage.

alive probed 2026-11-15 · unchanged since 2026-11-07

7tools

2.7ktokens in Claude Opus 5.5

1.3 %of Claude's 200k window

1.1×the median server

2.7 sto initialize

3 msto list tools

Run it: docker run -i --rm ghcr.io/wyre-ai/petra-mcp:v1.0.1 (stdio, probed in a container with the network off)
Host: ghcr.io
Reports itself as: petra-mcp 0.1.0
Capabilities: logging, tools
Instructions: none
Of a 1M window: 0.3 % of a 1M context window
Count: 2.7k tokens in Claude Opus 5.5, exact, measured 2026-11-04. With the Claude Code prefix mcp__…__ on each tool name: 2.7k. The o200k_base estimate is 1.5k. Counted again when the tool definitions change. Method.
Repository: https://github.com/WYRE-AI/petra-mcp
Website: https://github.com/WYRE-AI/petra-mcp
Registry: active, updated 2026-11-06 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.78×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
petra_list_incidents	613	345	23 %
petra_list_posture_reports	474	267	18 %
petra_get_failed_attacks	382	215	14 %
petra_get_usage	320	180	12 %
petra_list_billable_users	318	179	12 %

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

Servers that mention petra.

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.