constrain_angle

A write tool on the FreeCAD Robust MCP server.

SERVERFreeCAD Robust MCP Server SOURCEspkane/freecad-addon-robust-mcp-server

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/spkane-freecad-addon-robust-mcp-server/constrain-angle.md

WHAT IT DOES

What constrain_angle does on FreeCAD Robust MCP Server

AI agents use constrain_angle to create or update resources in FreeCAD Robust MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your FreeCAD Robust MCP Server environment.

RISK

Why constrain_angle is rated Medium

The tool creates or modifies sketch geometry constraints (angle constraints) within FreeCAD models. This is a Write operation because it alters the design data reversibly—constraints can be removed, edited, or replaced without permanent deletion. While not Read (no data retrieval) or Destructive (fully reversible), it modifies model state.

From the tool's definition Tool name 'constrain_angle' indicates modification of sketch constraints in FreeCAD; sibling tools like 'add_sketch_constraint' confirm this tool adds or modifies constraint data in a reversible manner.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs constrain_angle safely

PolicyLayer is an MCP gateway: it sits between your AI agents and FreeCAD Robust MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For constrain_angle, this is the rule to start with:

constrain_angle Rate-limited

constrain_angle 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": {
    "constrain_angle": {
      "limits": [
        {
          "counter": "constrain_angle_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect FreeCAD Robust MCP Server, apply this rule, and every constrain_angle call is checked against it from then on.

FAQ

Questions about constrain_angle

What does the constrain_angle tool do? +

constrain_angle is a write tool on the FreeCAD Robust MCP Server MCP server. It is categorised as a Write tool in the FreeCAD Robust MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on constrain_angle? +

Register the FreeCAD Robust MCP Server MCP server in PolicyLayer and add a rule for constrain_angle: 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 FreeCAD Robust MCP Server. Nothing to install.

What risk level is constrain_angle? +

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

Can I rate-limit constrain_angle? +

Yes. Add a rate_limit block to the constrain_angle 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 constrain_angle completely? +

Set action: deny in the PolicyLayer policy for constrain_angle. 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 constrain_angle? +

constrain_angle is provided by the FreeCAD Robust MCP Server MCP server (spkane/freecad-addon-robust-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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