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Hilo Studio
com.hilostudiolab/studio in the official MCP registry.
Endpoint https://hilostudiolab.com/mcp.
The registry describes it as: Madrid studio for branding and interactive 3D web: services, prices, work, Lab demos, quotes.
We read its 13 tools on 2026-10-27. 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
hilo_studio_overview hilo_list_services hilo_get_service hilo_get_pricing hilo_list_projects hilo_get_case_study hilo_list_lab_experiments hilo_get_lab_experiment hilo_list_blog_posts hilo_get_blog_post hilo_find_relevant_work hilo_recommend hilo_request_quote
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[](https://lazaretto.dev/mcp-registry/com-hilostudiolab-studio)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.