4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting MCP Server

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4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting is listed as active in the registry but did not answer our last check. It exposes 32 tools. Last commit 9 Oct 2026.

Remote MCP server for 4chems hosted IUCLID, CHESAR and QSAR Toolbox: onboarding, inquiries, admin.

Uptime history 31 days of history · worst day 0%

31 days agonow

0.0%

Uptime 24h

0 of 92 checks

Tools

read from the server

349 ms

Response time

average over 24h

Stars

last commit 9 Oct 2026

4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting does not always answer

Over the last week it answered 19.8% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

Settings → Connectors → Add custom connector, then paste this address

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

~/.codex/config.toml

[mcp_servers.platform-api]
url = "https://mcp.4chems.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "platform-api": {
      "url": "https://mcp.4chems.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "platform-api": {
      "type": "http",
      "url": "https://mcp.4chems.com/mcp"
    }
  }
}

Available tools 32

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

start

start_account_registration

Start registering a 4chems account with a business email address (`email`, `name`, optional `company`). Anonymous. Emails a 6-digit code to the address; no account exists yet. Ask the user for the code, then call verify_account_registration with the returned challenge_id and code. Free-mail addresses (gmail.com, ...) are refused: use the company address, or call start_inquiry. The answer is the same whether or not the address already has an account.

start_device_login

Sign in to an existing account by device login (UC-091, RFC 8628). Anonymous, empty body; the account must exist (start_account_registration, then set the password through the emailed link). Show `verification_uri` (or `verification_uri_complete`) and `user_code` to the human, who signs in there, then call `verify_device_login` with `challenge_id`, waiting `interval` seconds between calls. The response never contains the Keycloak device_code or the agent client secret.

start_inquiry

Store an anonymous inquiry draft and email a 6-digit verification code. Ask the user for the code, then call verify_inquiry with the returned challenge_id and code — the inquiry reaches 4chems only after that verification succeeds.

start_registration

DEPRECATED: use start_device_login. Deprecated — use start_device_login (same behaviour).

verify

verify_account_registration

Verify the emailed 6-digit code (`challenge_id`, `code`) and create the 4chems account. Never guess or retry codes, and never ask the user for a password.

verify_device_login

Poll a device login to token issuance (UC-091, RFC 8628). Anonymous. While the human has not signed in yet it answers `{"status": "pending", "retry_after": <seconds>}`: wait `retry_after` seconds and call again with the same `challenge_id`. On approval it returns Keycloak's token set (`access_token`, `refresh_token`, `expires_in`, ...) exactly once; pass the `access_token` as `authorization` ('Bearer <token>') to every other tool.

verify_inquiry

Verify the 6-digit code and deliver the inquiry to the helpdesk inbox.

verify_registration

DEPRECATED: use verify_device_login. Deprecated — use verify_device_login (same behaviour).

access

create_access_request

Request access to the tenant that owns the caller's verified email domain.

get_my_access

Return the caller's access level per related tenant. Call this to check what the current caller is authorized to do before attempting an action that requires a specific level, or to discover a pending invitation or access request.

revoke

revoke_assignment

Revoke a role x scope assignment from a tenant member.

revoke_invitation

Revoke a pending invitation so its token can no longer be accepted. Call this when a tenant admin wants to withdraw an invite sent by mistake or no longer needed; accepted invitations cannot be revoked.

tenant

add_tenant_service

Request a new service subscription for the caller's tenant and return its status. Call this when a tenant admin wants to add a service (ADR 0016 code fix: requires `admin`, was `customer` realm role only).

list_tenant_services

Return the caller's tenant's active service subscriptions. Call this before offering to add a service, to check what is already subscribed.

accept_invitation

Accept a pending invitation and grant the invitee's first role assignment. Call this when an invitee has a valid invite link and wants to join the tenant; single-use, consuming the token marks it accepted.

approve

approve_access_request

Approve a pending access request: issue a `member` invitation to the requester and resolve the request (level `admin` or `owner` of the request's tenant). The response carries the single-use invitation token to hand to the requester, who accepts via `accept_invitation`. 409 `access_request.not_pending` unless the request is pending.

billing

get_billing

Return the tenant's stored billing details: VAT id, invoice address, invoice email and PO reference. Call this to check whether billing is complete; only the owner and billing contacts may read it (`403 rbac.insufficient_level`).

catalog

get_catalog_templates

Return the enabled ApplicationTemplate catalog, ordered by name. Call this to discuss trial and template options with a prospect or customer before starting a trial. If this doesn't answer your question, call `start_inquiry` to ask 4chems directly or request a call.

complete

complete_billing

Complete the tenant's billing details: legal-entity name and type, VAT id, invoice address, invoice email and optional PO reference. Call this when the owner or a billing contact has the details. EU VAT ids are validated against VIES by the worker; a failed operation with `billing.vat_check_unavailable` can be retried by submitting again. Returns `202` with an operation to poll.

consents

list_consents

Return the caller's own recorded consents plus the tenant-scope consents of every tenant where the caller is at least a viewer. Call this to check which legal documents have already been accepted before asking again. Pass `tenant_id` to list one tenant's consents only (a caller of several tenants must).

dismiss

dismiss_access_request

Dismiss a pending access request (level `admin` or `owner` of the request's tenant). The requester is mailed — naming the tenant, never the dismissing admin — and may ask again. 409 `access_request.not_pending` unless the request is pending.

enrich

enrich_domain

Fetch the caller's domain imprint and suggest legal-entity details (UC-057).

grant

grant_assignment

Grant a role x scope assignment to a tenant member.

invitation

create_invitation

Invite an email address to the caller's tenant at the specified access level and return the invitation, including the raw single-use accept token. Call this when a tenant admin wants to add a new member; the invitee accepts via `accept_invitation`.

invitations

list_invitations

List all invitations for the caller's tenant, most recent first. Call this to show a tenant admin which invitations are pending, accepted, or revoked; the raw token is never included.

legal

get_legal_entity_types

Return the legal-entity types available for *country*, ordered alphabetically. If this doesn't answer your question, call `start_inquiry` to ask 4chems directly or request a call.

members

list_members

List tenant members with their effective role x scope assignments.

onboarding

get_onboarding_route

Return the next onboarding step. If this doesn't answer your question, call `start_inquiry` to ask 4chems directly or request a call.

operation

get_my_operation

Return the status, result and error of an operation the caller started, such as the `Location` of a `202` from `complete_billing`. Call this to poll it to completion.

record

record_consent

Record acceptance of a legal document version and return the entry; call this only after showing the user the document URL and version and receiving an explicit affirmative answer.

self

create_self_service_tenant

Create a 7-day trial tenant for the caller's business email domain (UC-052). Needs a verified email on a business domain and `attestation: true`; answers `auth.email_not_verified`, `tenant.attestation_required`, `tenant.free_mail_domain` (free-mail address), `tenant.domain_exists` (a live trial tenant on the domain) or `trial.exists_for_domain` (the domain already had its one trial; call `start_inquiry`). The trial lasts exactly 7 days; `ttl` / `expires_at` in the body are ignored.

withdraw

withdraw_access_request

Withdraw the caller's own pending access request; no notification is sent. Any other caller gets 404 `access_request.not_found`, the same as for an unknown id. 409 `access_request.not_pending` unless pending.

Endpoints

URL	Transport	State	Latency	Checked
https://mcp.4chems.com/mcp	streamable-http	answering	349 ms	5 min ago

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4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting — questions

Answers built from our own checks of this server.

What can 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting do?

It exposes 32 tools, read directly from the server on our last check. Among them: accept_invitation, add_tenant_service, approve_access_request, complete_billing, create_access_request, create_invitation and 26 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

What is 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting mostly used for?

Its tools cluster around verify, start and revoke. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 92 checks got a reply (0.0%), average response time 349 ms. The bar chart above shows every period we have measured.

The registry lists 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

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

No. 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 32 of them are readable on this page. This is what we observed, not what the docs claim.

Is 4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting open source?

We cannot say either way: 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.