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SuppCo
co.supp/suppco in the official MCP registry.
Endpoint https://api.supp.co/mcp.
The registry describes it as: Supplement research, product and brand TrustScores, and your SuppCo stack and Buying Club cart.
We read its 30 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
suppco_find_products suppco_get_product_info suppco_get_product_trust_score suppco_compare_product_to_alternatives suppco_find_buying_club_products suppco_compare_to_buying_club suppco_get_brand_trust_score suppco_find_brands suppco_search_effects suppco_get_nutrient_info suppco_search_protocols suppco_get_my_stack suppco_get_my_schedule suppco_update_product_schedule suppco_get_my_nutrient_plan suppco_get_my_nutrient_totals suppco_get_my_protocols suppco_update_my_profile suppco_save_memory suppco_add_to_stack suppco_remove_from_stack suppco_swap_products suppco_manage_stack suppco_get_stack_score suppco_refresh_stack_score suppco_add_to_cart suppco_update_cart_item suppco_remove_from_cart suppco_get_my_cart suppco_get_checkout_url
Run this server? Show the check in your README
The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/co-supp-suppco)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.