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4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting
com.4chems/platform-api in the official MCP registry.
Endpoint https://mcp.4chems.com/mcp. Source: github.com/4chems/mcp.
The registry describes it as: Remote MCP server for 4chems hosted IUCLID, CHESAR and QSAR Toolbox: onboarding, inquiries, admin.
We read its 32 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
get_catalog_templates list_consents record_consent start_inquiry verify_inquiry accept_invitation get_my_access create_access_request approve_access_request dismiss_access_request withdraw_access_request enrich_domain start_device_login verify_device_login start_account_registration verify_account_registration start_registration verify_registration get_onboarding_route create_self_service_tenant get_my_operation get_legal_entity_types get_billing complete_billing list_invitations create_invitation revoke_invitation list_members grant_assignment revoke_assignment list_tenant_services add_tenant_service
Run this server? Show the check in your README
The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/com-4chems-platform-api)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.