path_lineto · SVG Canvas MCP: Risk & Policy

WHAT IT DOES

What path_lineto does on SVG Canvas MCP

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

WHY IT NEEDS A POLICY

Why path_lineto needs a policy

The tool adds a line segment to an SVG path, which is a graphics creation/modification operation that affects drawing data. This is a Write operation (creates/modifies data reversibly) rather than Read (no side effects) or Execute (runs arbitrary code). The severity is low because misuse results in unwanted graphical elements that can be easily edited or removed, with no data loss or external system impact.

From the tool's definition Tool name is 'path_lineto' and description translates to 'Add a straight line to the current path.' This operation creates/modifies SVG path data by adding a line segment, which is a reversible graphics manipulation operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

path_lineto Rate-limited

path_lineto 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": {
    "path_lineto": {
      "limits": [
        {
          "counter": "path_lineto_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 SVG Canvas MCP, so you can run agents against it safely.

FAQ

Questions about path_lineto

What does the path_lineto tool do? +

현재 패스에 직선을 추가합니다. It is categorised as a Write tool in the SVG Canvas MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on path_lineto? +

Register the SVG Canvas MCP server in PolicyLayer and add a rule for path_lineto: 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 SVG Canvas MCP. Nothing to install.

What risk level is path_lineto? +

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

Can I rate-limit path_lineto? +

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

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

path_lineto is provided by the SVG Canvas MCP server (kim62210/svg-canvas-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.