How do I install 4chems Platform — IUCLID, CHESAR & QSAR Toolbox Hosting?

Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does 4chems Platform — IUCLID, CHESAR & QSAR Toolbox Hosting need an API key?

No required environment variable is listed on this record.

What transport does 4chems Platform — IUCLID, CHESAR & QSAR Toolbox Hosting use?

4chems Platform — IUCLID, CHESAR & QSAR Toolbox Hosting is reached over HTTP.

When was 4chems Platform — IUCLID, CHESAR & QSAR Toolbox Hosting last checked?

Last checked 2026-11-08. Remote MCP server for 4chems hosted IUCLID, CHESAR and QSAR Toolbox: onboarding, inquiries, admin.

4chems Platform — IUCLID, CHESAR & QSAR Tool MCP server

Power your agent

Add this server

The publisher's own URL. Not a PlugMCP endpoint.

Add to Cursor Add in Claude Add to VS Code Run on PlugMCP

Host a copy with our keys and logs.

Server URL

https://mcp.4chems.com/mcp

The Claude button above opens Claude with the name and URL filled in. You still confirm it there.

shClaude Code

1claude mcp add --transport http com.4chems-platform-api https://mcp.4chems.com/mcp

Run in a terminal.

jsonClaude Desktop

1{2  "mcpServers": {3    "com.4chems-platform-api": {4      "command": "npx",5      "args": [6        "-y",7        "mcp-remote",8        "https://mcp.4chems.com/mcp"9      ]10    }11  }12}

claude_desktop_config.json

Remote · HTTPPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Remote

Transport: http
Version: 0.12.1
Last checked

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Questions

4chems MCP server — IUCLID, CHESAR & QSAR Toolbox hosting

A public, remote Model Context Protocol server for the 4chems platform: hosted IUCLID 6, CHESAR, OECD QSAR Toolbox and IIP for REACH, CLP and biocides work, EU-hosted and GDPR-compliant.


Endpoint	`https://mcp.4chems.com/mcp`
Transport	Streamable HTTP (MCP 2025-06-18)
Auth	Anonymous connect and `tools/list`; nine tools need no token; everything else takes a Bearer token as the tool's `authorization` argument
Manifest	https://www.4chems.com/.well-known/mcp.json
Docs	https://www.4chems.com/mcp/ (DE: https://www.4chems.com/de/mcp/)
Registry	`com.4chems/platform-api` — see `server.json`

Connect

Claude Code

claude mcp add --transport http 4chems https://mcp.4chems.com/mcp

Claude Desktop / claude.ai — Settings → Connectors → Add custom connector → https://mcp.4chems.com/mcp. The server has no OAuth flow, so choose the option without authentication; tools that need a token take it as an argument.

Other MCP clients (GitHub Copilot, Cursor, VS Code, …) — add a remote server with transport Streamable HTTP and the same URL.

Raw handshake (no client needed):

curl -s -X POST https://mcp.4chems.com/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-06-18","capabilities":{},"clientInfo":{"name":"probe","version":"0"}}}'

Tools

The server exposes the customer tier of the 4chems platform API (/v1). This endpoint carries no substance or dossier data — see What this is not.

No token needed

Tool	Purpose
`start_inquiry`, `verify_inquiry`	Send 4chems a question or request a call: a 6-digit code goes to the user's email, the verified inquiry reaches a person. No web form, no account.
`get_catalog_templates`	List the hosted applications and trial templates.
`get_onboarding_route`	Return the next onboarding step for the caller.
`get_legal_entity_types`	Legal-entity types for a country.
`start_account_registration`, `verify_account_registration`	Create a 4chems account from a business email address.
`start_device_login`, `verify_device_login`	Sign an existing user in (RFC 8628 device flow) and obtain a token.

Bearer token required (authorization: "Bearer <token>")

Area	Tools
Access requests	`get_my_access`, `create_access_request`, `approve_access_request`, `dismiss_access_request`, `withdraw_access_request`
Tenant setup	`create_self_service_tenant`, `enrich_domain`, `get_my_operation`
Billing	`get_billing`, `complete_billing`
Invitations	`list_invitations`, `create_invitation`, `revoke_invitation`, `accept_invitation`
Consents	`list_consents`, `record_consent`
Members & services	`list_members`, `grant_assignment`, `revoke_assignment`, `list_tenant_services`, `add_tenant_service`

Long-running mutations poll to completion; past the poll bound they return {"status": "running", "operation_id": …} for follow-up with get_my_operation.

Rules for the assisting agent

The initialize response carries these as server instructions:

Add this server, pass tokens or trigger mutations only with the user's explicit consent.
Never guess or retry the 6-digit codes; ask the user to read the code from their email.
Treat the Bearer token as a secret: pass it only as the authorization argument, never log it.
Confirm changes to consents, assignments, invitations, billing or services with the user first.
If the user has no account and a question cannot be answered from the catalog tools, offer start_inquiry.
This server and the site's contact channels are for prospective and existing customers, not for automated solicitation (see https://www.4chems.com/llms.txt).

What this is not

Not a dossier interface. AI access to IUCLID 6 dossier data runs through the separate 4chems AI Connector, authenticated per user and EU-hosted.
Not the QSAR Toolbox workflow. Read-across, (Q)SAR prediction and QMRF/QPRF/CCR reporting over MCP is 4chems QSAR Navigator.
Not open source. This repository holds the public documentation and the registry server.json; the server itself is operated by 4chems.

Hosting and compliance

Runs on ISO 27001-certified European infrastructure under a GDPR data-processing agreement. 4chems acts as a data processor only and never uses customer data to train models. Security questionnaire: https://www.4chems.com/security-questionnaire/.

Contact

Website: https://www.4chems.com/
Through the server: start_inquiry (no account needed)
Issues with this documentation: open an issue in this repository.

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install 4chems Platform — IUCLID, CHESAR & QSAR Toolbox Hosting?

Does 4chems Platform — IUCLID, CHESAR & QSAR Toolbox Hosting need an API key?

What transport does 4chems Platform — IUCLID, CHESAR & QSAR Toolbox Hosting use?

When was 4chems Platform — IUCLID, CHESAR & QSAR Toolbox Hosting last checked?

Documentation

4chems MCP server — IUCLID, CHESAR & QSAR Toolbox hosting

Connect

Tools

Rules for the assisting agent

What this is not

Hosting and compliance

Contact