create_relationship · Mcp Archimate MCP: Risk & Policy

WHAT IT DOES

What create_relationship does on Mcp Archimate

AI agents use create_relationship to create or update resources in Mcp Archimate — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Mcp Archimate environment.

WHY IT NEEDS A POLICY

Why create_relationship needs a policy

This tool creates new relationships between elements in an ArchiMate model, which is a reversible modification operation. It falls under Write category rather than Execute because it adds structured data rather than executing arbitrary code or commands.

From the tool's definition Tool name is 'create_relationship' and description states 'Crée une nouvelle relation ArchiMate entre deux éléments' (Creates a new ArchiMate relationship between two elements).

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_relationship Rate-limited

create_relationship stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "create_relationship": {
      "limits": [
        {
          "counter": "create_relationship_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Mcp Archimate, so you can run agents against it safely.

FAQ

Questions about create_relationship

What does the create_relationship tool do? +

Crée une nouvelle relation ArchiMate entre deux éléments. Types valides: ${_RELATIONSHIP_TYPES_STR}. It is categorised as a Write tool in the Mcp Archimate MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_relationship? +

Register the Mcp Archimate MCP server in PolicyLayer and add a rule for create_relationship: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Mcp Archimate. Nothing to install.

What risk level is create_relationship? +

create_relationship is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_relationship? +

Yes. Add a rate_limit block to the create_relationship rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block create_relationship completely? +

Set action: deny in the PolicyLayer policy for create_relationship. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides create_relationship? +

create_relationship is provided by the Mcp Archimate MCP server (lacrif/mcp-archimate). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.