4chems Platform — IUCLID, CHESAR & QSAR Toolbox hosting

Official32 tools

by 4chems

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

com.4chems/platform-api MCP Server

Remote MCP server for 4chems hosted IUCLID, CHESAR and QSAR Toolbox. It supports workflows for onboarding, handling inquiries, and performing administration tasks against those platforms.

🛠️ Key Features

Remote MCP server
Integration for hosted IUCLID
Integration for hosted CHESAR
Integration for QSAR Toolbox
Onboarding support
Inquiry handling
Admin capabilities

🚀 Use Cases

Onboard users or systems for 4chems hosted services
Submit and process inquiries related to IUCLID, CHESAR, and QSAR Toolbox
Run administrative actions across these hosted tools

⚡ Developer Benefits

Centralized MCP access to multiple 4chems hosted platforms (IUCLID, CHESAR, QSAR Toolbox)
Clear separation of onboarding, inquiry, and admin workflows

⚠️ Limitations

Server information provided does not specify available tools, endpoints, or authentication details beyond the stated onboarding, inquiries, and admin scope

Topics

ai-agentsiuclidmcpmodel-context-protocolreachchesarqsar-toolbox

Captured live from the server via tools/list.

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.

Parameters1

authorization

string

optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "default": "",
      "type": "string"
    }
  },
  "additionalProperties": false
}

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).

Parameters2

authorization	string	required
tenant_id	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "tenant_id": {
      "default": "",
      "type": "string"
    }
  },
  "required": [
    "authorization"
  ],
  "additionalProperties": false
}

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.

Parameters4

authorization	string	required
document_code	string	required
document_version	string	required
tenant_id	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "document_code": {
      "type": "string"
    },
    "document_version": {
      "type": "string"
    },
    "tenant_id": {
      "default": "",
      "type": "string"
    }
  },
  "required": [
    "authorization",
    "document_code",
    "document_version"
  ],
  "additionalProperties": false
}

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.

Parameters2

authorization	string	optional
body	object	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "default": "",
      "type": "string"
    },
    "body": {
      "default": "",
      "properties": {
        "company": {
          "default": "",
          "maxLength": 120,
          "type": "string"
        },
        "email": {
          "format": "email",
          "type": "string"
        },
        "message": {
          "maxLength": 4000,
          "minLength": 10,
          "type": "string"
        },
        "name": {
          "maxLength": 120,
          "minLength": 1,
          "type": "string"
        },
        "topic": {
          "enum": [
            "migration",
            "hosting",
            "iuclid",
            "chesar",
            "qsar_toolbox",
            "other"
          ],
          "type": "string"
        },
        "website": {
          "default": "",
          "type": "string"
        }
      },
      "required": [
        "name",
        "email",
        "topic",
        "message"
      ],
      "type": "object"
    }
  },
  "additionalProperties": false
}

verify_inquiry

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

Parameters2

authorization	string	optional
body	object	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "default": "",
      "type": "string"
    },
    "body": {
      "default": "",
      "properties": {
        "challenge_id": {
          "format": "uuid",
          "type": "string"
        },
        "code": {
          "maxLength": 6,
          "minLength": 6,
          "type": "string"
        }
      },
      "required": [
        "challenge_id",
        "code"
      ],
      "type": "object"
    }
  },
  "additionalProperties": false
}

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.

Parameters2

authorization	string	required
token	string	required

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "token": {
      "type": "string"
    }
  },
  "required": [
    "authorization",
    "token"
  ],
  "additionalProperties": false
}

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.

Parameters1

authorization

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    }
  },
  "required": [
    "authorization"
  ],
  "additionalProperties": false
}

create_access_request

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

Parameters1

authorization

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    }
  },
  "required": [
    "authorization"
  ],
  "additionalProperties": false
}

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.

Parameters2

authorization	string	required
access_request_id	string	required

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "access_request_id": {
      "type": "string"
    }
  },
  "required": [
    "authorization",
    "access_request_id"
  ],
  "additionalProperties": false
}

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.

Parameters2

authorization	string	required
access_request_id	string	required

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "access_request_id": {
      "type": "string"
    }
  },
  "required": [
    "authorization",
    "access_request_id"
  ],
  "additionalProperties": false
}

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.

Parameters2

authorization	string	required
access_request_id	string	required

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "access_request_id": {
      "type": "string"
    }
  },
  "required": [
    "authorization",
    "access_request_id"
  ],
  "additionalProperties": false
}

enrich_domain

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

Parameters1

authorization

string

required

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    }
  },
  "required": [
    "authorization"
  ],
  "additionalProperties": false
}

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.

Parameters1

authorization

string

optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "default": "",
      "type": "string"
    }
  },
  "additionalProperties": false
}

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.

Parameters2

authorization	string	optional
body	object	optional	Request body for POST /v1/onboarding/registrations/device/verify (UC-075).

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "default": "",
      "type": "string"
    },
    "body": {
      "default": "",
      "description": "Request body for POST /v1/onboarding/registrations/device/verify (UC-075).",
      "properties": {
        "challenge_id": {
          "format": "uuid",
          "type": "string"
        }
      },
      "required": [
        "challenge_id"
      ],
      "type": "object"
    }
  },
  "additionalProperties": false
}

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.

Parameters2

authorization	string	optional
body	object	optional	Request body for POST /v1/onboarding/registrations/account (UC-088).

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "default": "",
      "type": "string"
    },
    "body": {
      "default": "",
      "description": "Request body for POST /v1/onboarding/registrations/account (UC-088).",
      "properties": {
        "company": {
          "anyOf": [
            {
              "maxLength": 120,
              "type": "string"
            },
            {
              "type": "null"
            }
          ]
        },
        "email": {
          "type": "string"
        },
        "name": {
          "maxLength": 120,
          "minLength": 1,
          "type": "string"
        }
      },
      "required": [
        "email",
        "name"
      ],
      "type": "object"
    }
  },
  "additionalProperties": false
}

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.

Parameters2

authorization	string	optional
body	object	optional	Request body for POST /v1/onboarding/registrations/account/verify (UC-089).

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "default": "",
      "type": "string"
    },
    "body": {
      "default": "",
      "description": "Request body for POST /v1/onboarding/registrations/account/verify (UC-089).",
      "properties": {
        "challenge_id": {
          "format": "uuid",
          "type": "string"
        },
        "code": {
          "maxLength": 32,
          "minLength": 1,
          "type": "string"
        }
      },
      "required": [
        "challenge_id",
        "code"
      ],
      "type": "object"
    }
  },
  "additionalProperties": false
}

start_registration

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

Parameters1

authorization

string

optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "default": "",
      "type": "string"
    }
  },
  "additionalProperties": false
}

verify_registration

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

Parameters2

authorization	string	optional
body	object	optional	Request body for POST /v1/onboarding/registrations/device/verify (UC-075).

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "default": "",
      "type": "string"
    },
    "body": {
      "default": "",
      "description": "Request body for POST /v1/onboarding/registrations/device/verify (UC-075).",
      "properties": {
        "challenge_id": {
          "format": "uuid",
          "type": "string"
        }
      },
      "required": [
        "challenge_id"
      ],
      "type": "object"
    }
  },
  "additionalProperties": false
}

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.

Parameters1

authorization

string

optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "default": "",
      "type": "string"
    }
  },
  "additionalProperties": false
}

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.

Parameters2

authorization	string	required
body	object	optional	Request body for POST /v1/onboarding/tenants (UC-052). The domain is derived from the caller's verified token email claim (NFR-006 pt 4) — it is not a request parameter. attestation must be true; the endpoint raises 422 if false (NFR-006 §8a).

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "body": {
      "default": "",
      "description": "Request body for POST /v1/onboarding/tenants (UC-052).\n\nThe domain is derived from the caller's verified token email claim\n(NFR-006 pt 4) — it is not a request parameter.\nattestation must be true; the endpoint raises 422 if false (NFR-006 §8a).",
      "properties": {
        "attestation": {
          "type": "boolean"
        },
        "bot_signals": {
          "anyOf": [
            {
              "description": "Advisory bot-detection signals from the onboarding wizard (UC-052).\n\nRecorded and fed to scoring; never used as a hard gate.",
              "properties": {
                "honeypot": {
                  "anyOf": [
                    {
                      "type": "string"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "submit_timing_ms": {
                  "anyOf": [
                    {
                      "type": "integer"
                    },
                    {
                      "type": "null"
                    }
                  ]
                }
              },
              "type": "object"
            },
            {
              "type": "null"
            }
          ]
        },
        "legal_entity": {
          "description": "Composite legal-entity input validated against the country catalog.\n\nRules:\n- *country* must be a supported market (validated at field level via SupportedCountry,\n  caught in the model validator against the loaded catalog).\n- *legal_entity_type* must appear in that country's catalog file.\n- When *legal_entity_type* is ``<CC>_OTHER``, *other_label* is required (2-80 chars).\n- For any other type, *other_label* must be absent.",
          "properties": {
            "country": {
              "pattern": "^[A-Z]{2}$",
              "type": "string"
            },
            "legal_entity_type": {
              "pattern": "^[A-Z]{2,3}_[A-Z0-9][A-Z0-9_]*$",
              "type": "string"
            },
            "name": {
              "maxLength": 200,
              "minLength": 1,
              "type": "string"
            },
            "other_label": {
              "anyOf": [
                {
                  "maxLength": 80,
                  "minLength": 2,
                  "type": "string"
                },
                {
                  "type": "null"
                }
              ]
            }
          },
          "required": [
            "country",
            "legal_entity_type",
            "name"
          ],
          "type": "object"
        }
      },
      "required": [
        "legal_entity",
        "attestation"
      ],
      "type": "object"
    }
  },
  "required": [
    "authorization"
  ],
  "additionalProperties": false
}

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.

Parameters2

authorization	string	required
operation_id	string	required

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "operation_id": {
      "type": "string"
    }
  },
  "required": [
    "authorization",
    "operation_id"
  ],
  "additionalProperties": false
}

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.

Parameters2

country	string	required	ISO 3166-1 alpha-2 country code
authorization	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "country": {
      "description": "ISO 3166-1 alpha-2 country code",
      "type": "string"
    },
    "authorization": {
      "default": "",
      "type": "string"
    }
  },
  "required": [
    "country"
  ],
  "additionalProperties": false
}

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`).

Parameters2

authorization	string	required
tenant_id	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "tenant_id": {
      "default": "",
      "type": "string"
    }
  },
  "required": [
    "authorization"
  ],
  "additionalProperties": false
}

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.

Parameters3

authorization	string	required
tenant_id	string	optional
body	object	optional	`complete_billing` body. `vat_id` is checked against the tenant's country in the service.

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "tenant_id": {
      "default": "",
      "type": "string"
    },
    "body": {
      "default": "",
      "description": "`complete_billing` body. `vat_id` is checked against the tenant's country in the service.",
      "properties": {
        "address_line1": {
          "maxLength": 200,
          "minLength": 1,
          "type": "string"
        },
        "address_line2": {
          "anyOf": [
            {
              "maxLength": 200,
              "type": "string"
            },
            {
              "type": "null"
            }
          ]
        },
        "city": {
          "maxLength": 100,
          "minLength": 1,
          "type": "string"
        },
        "invoice_email": {
          "format": "email",
          "type": "string"
        },
        "legal_entity_type": {
          "anyOf": [
            {
              "pattern": "^[A-Z]{2,3}_[A-Z0-9][A-Z0-9_]*$",
              "type": "string"
            },
            {
              "type": "null"
            }
          ]
        },
        "name": {
          "anyOf": [
            {
              "maxLength": 200,
              "minLength": 1,
              "type": "string"
            },
            {
              "type": "null"
            }
          ]
        },
        "other_label": {
          "anyOf": [
            {
              "maxLength": 80,
              "minLength": 2,
              "type": "string"
            },
            {
              "type": "null"
            }
          ]
        },
        "po_reference": {
          "anyOf": [
            {
              "maxLength": 64,
              "minLength": 1,
              "type": "string"
            },
            {
              "type": "null"
            }
          ]
        },
        "postal_code": {
          "maxLength": 20,
          "minLength": 1,
          "type": "string"
        },
        "vat_id": {
          "anyOf": [
            {
              "maxLength": 40,
              "type": "string"
            },
            {
              "type": "null"
            }
          ]
        }
      },
      "required": [
        "address_line1",
        "postal_code",
        "city",
        "invoice_email"
      ],
      "type": "object"
    }
  },
  "required": [
    "authorization"
  ],
  "additionalProperties": false
}

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.

Parameters2

authorization	string	required
tenant_id	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "tenant_id": {
      "default": "",
      "type": "string"
    }
  },
  "required": [
    "authorization"
  ],
  "additionalProperties": false
}

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`.

Parameters3

authorization	string	required
tenant_id	string	optional
body	object	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "tenant_id": {
      "default": "",
      "type": "string"
    },
    "body": {
      "default": "",
      "properties": {
        "billing_contact": {
          "default": false,
          "type": "boolean"
        },
        "email": {
          "format": "email",
          "type": "string"
        },
        "level": {
          "description": "The grantable tenant access levels (ADR 0016 decision 3: role collapse).\n\nScoped department/instance roles (``team_admin``, ``env_admin``,\n``app_admin``, ``application_owner``, ``application_supervisor``,\n``application_user``) and the platform roles (``platform_admin``,\n``node_admin``) are no longer grantable; the migration\n(``uc087accesslevelscore_0001``) maps every existing row onto one of\nthese four values.",
          "enum": [
            "viewer",
            "member",
            "admin",
            "owner"
          ],
          "type": "string"
        }
      },
      "required": [
        "email"
      ],
      "type": "object"
    }
  },
  "required": [
    "authorization"
  ],
  "additionalProperties": false
}

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.

Parameters3

authorization	string	required
invitation_id	string	required
tenant_id	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "invitation_id": {
      "type": "string"
    },
    "tenant_id": {
      "default": "",
      "type": "string"
    }
  },
  "required": [
    "authorization",
    "invitation_id"
  ],
  "additionalProperties": false
}

list_members

List tenant members with their effective role x scope assignments.

Parameters2

authorization	string	required
tenant_id	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "tenant_id": {
      "default": "",
      "type": "string"
    }
  },
  "required": [
    "authorization"
  ],
  "additionalProperties": false
}

grant_assignment

Grant a role x scope assignment to a tenant member.

Parameters4

authorization	string	required
sub	string	required
tenant_id	string	optional
body	object	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "sub": {
      "type": "string"
    },
    "tenant_id": {
      "default": "",
      "type": "string"
    },
    "body": {
      "default": "",
      "properties": {
        "role": {
          "type": "string"
        },
        "scope_id": {
          "type": "string"
        },
        "scope_type": {
          "type": "string"
        }
      },
      "required": [
        "role",
        "scope_type",
        "scope_id"
      ],
      "type": "object"
    }
  },
  "required": [
    "authorization",
    "sub"
  ],
  "additionalProperties": false
}

revoke_assignment

Revoke a role x scope assignment from a tenant member.

Parameters4

authorization	string	required
sub	string	required
id	string	required
tenant_id	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "sub": {
      "type": "string"
    },
    "id": {
      "type": "string"
    },
    "tenant_id": {
      "default": "",
      "type": "string"
    }
  },
  "required": [
    "authorization",
    "sub",
    "id"
  ],
  "additionalProperties": false
}

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.

Parameters2

authorization	string	required
tenant_id	string	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "tenant_id": {
      "default": "",
      "type": "string"
    }
  },
  "required": [
    "authorization"
  ],
  "additionalProperties": false
}

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).

Parameters3

authorization	string	required
tenant_id	string	optional
body	object	optional

Raw schema

{
  "type": "object",
  "properties": {
    "authorization": {
      "type": "string"
    },
    "tenant_id": {
      "default": "",
      "type": "string"
    },
    "body": {
      "default": "",
      "properties": {
        "service": {
          "type": "string"
        }
      },
      "required": [
        "service"
      ],
      "type": "object"
    }
  },
  "required": [
    "authorization"
  ],
  "additionalProperties": false
}

README.md5 KBView on GitHub

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

bash

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):

bash

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.

Install

Tools (32)

get_catalog_templateslist_consentsrecord_consentstart_inquiryverify_inquiryaccept_invitationget_my_accesscreate_access_request

Remote endpoint

Streamable HTTP

Hosted server - connect over the network, no local install.

url

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

Add to VS Code Add to Cursor

claude_desktop_config.json

json

{
  "mcpServers": {
    "platform-api": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-remote",
        "https://mcp.4chems.com/mcp"
      ]
    }
  }
}

Desktop config is stdio-only; this bridges via mcp-remote. Native remote: Settings > Connectors.

com.4chems/platform-api MCP Server

🛠️ Key Features

🚀 Use Cases

⚡ Developer Benefits

⚠️ Limitations

Topics

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

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

Connect

Tools

Rules for the assisting agent

What this is not

Hosting and compliance

Contact

Install

Remote endpoint

Related servers