collect_asset · AI-Canvas MCP Server MCP: Risk & Policy

WHAT IT DOES

What collect_asset does on AI-Canvas MCP Server

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

WHY IT NEEDS A POLICY

Why collect_asset needs a policy

This tool creates or modifies a collection by aggregating design nodes—a data creation/modification action. It does not execute arbitrary code, delete irreversibly, or move funds.

From the tool's definition The tool description explicitly states it will 'Collect a design node from the current document into a named collection for reuse across projects.' This involves creating/modifying a named collection by adding design assets, which is a reversible write…

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

collect_asset Rate-limited

collect_asset 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": {
    "collect_asset": {
      "limits": [
        {
          "counter": "collect_asset_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 AI-Canvas MCP Server, so you can run agents against it safely.

FAQ

Questions about collect_asset

What does the collect_asset tool do? +

Collect a design node from the current document into a named collection for reuse across projects. It is categorised as a Write tool in the AI-Canvas 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 collect_asset? +

Register the AI-Canvas MCP Server MCP server in PolicyLayer and add a rule for collect_asset: 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 AI-Canvas MCP Server. Nothing to install.

What risk level is collect_asset? +

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

Can I rate-limit collect_asset? +

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

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

collect_asset is provided by the AI-Canvas MCP Server MCP server (laoluojuhai/ai-canvas). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.