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Zooza MCP Server
app.zooza/mcp-server in the official MCP registry.
Endpoint https://mcp.zooza.app/mcp. Source: github.com/zooza-dev/zooza-mcp-server.
The registry describes it as: MCP server for Zooza — class scheduling, attendance, and booking for activity businesses.
We read its 18 tools on 2026-10-22. Nothing in them matched our tool-poisoning rules. It also sets server instructions, text a client puts in front of the model on connect; those were read too.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
get_terminology whoami classes_find_courses classes_find_resource classes_find_classes bookings_find sessions_find_events sessions_get_attendance sessions_mark_attendance classes_update sessions_update sessions_cancel bookings_copy_booking comms_send_message reports_get_data get_skill get_tool_schema call_tool
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The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/app-zooza-mcp-server)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.
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