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Maxwell Directory (x402 + MCP)
ai.maxwellinternational/data in the official MCP registry.
Endpoint https://api.maxwellinternational.ai/mcp.
The registry describes it as: Local providers worldwide, plus travel and public data. Free search; paid answers via x402.
We read its 36 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
list_products get_price_quote free_sample service_terms send_feedback ski_coverage trip_map food_coverage llm_models ski_trip_step ski_trip_bundle ski_prices ski_quote ski_resort ski_prices_bulk ski_operator ski_inventory restaurant_menu us_weather insider_tips company_lookup legislation_lookup open_data_search sanctions_screen drug_and_food_safety vulnerability_lookup patent_lookup court_opinions macro_series market_quote x402_doctor token_safety domain_registration npm_package maxwell_chat call_product
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The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/ai-maxwellinternational-data)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.