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In Da Mix
com.divingtechnics.indamix/indamix in the official MCP registry.
Endpoint https://indamix.divingtechnics.com/mcp.
The registry describes it as: Gas blending calculator for scuba divers: nitrox, trimix, heliair, heliox, MOD, best mix and fills.
We read its 9 tools on 2026-10-26. 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
blend gas_usage fills_from_bank top_up best_mix mod what_if decant list_methods
Run this server? Show the check in your README
The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/com-divingtechnics-indamix-indamix)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.