canvas_import_image

把当前 Agent 已授权目录中的现有图片导入已关联画布，并创建立即采用该图片的参考节点。仅导入图片时省略 sourceNodeId 和 relation；需要连线时两项必须同时提供，来源节点须位于当前画布。不要要求用户拖入原生 Canvas。

SERVERDutyDeck SOURCEtaokoplay/DutyDeck

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/dutydeck/canvas-import-image.md

WHAT IT DOES

What canvas_import_image does on DutyDeck

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

RISK

Why canvas_import_image is rated Medium

An AI agent can call canvas_import_image faster than any human can review: one bad instruction and it creates or modifies resources in DutyDeck by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs canvas_import_image safely

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

canvas_import_image Rate-limited

canvas_import_image 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": {
    "canvas_import_image": {
      "limits": [
        {
          "counter": "canvas_import_image_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 DutyDeck, apply this rule, and every canvas_import_image call is checked against it from then on.

FAQ

Questions about canvas_import_image

What does the canvas_import_image tool do? +

把当前 Agent 已授权目录中的现有图片导入已关联画布，并创建立即采用该图片的参考节点。仅导入图片时省略 sourceNodeId 和 relation；需要连线时两项必须同时提供，来源节点须位于当前画布。不要要求用户拖入原生 Canvas。. It is categorised as a Write tool in the DutyDeck MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on canvas_import_image? +

Register the DutyDeck MCP server in PolicyLayer and add a rule for canvas_import_image: 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 DutyDeck. Nothing to install.

What risk level is canvas_import_image? +

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

Can I rate-limit canvas_import_image? +

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

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

canvas_import_image is provided by the DutyDeck MCP server (taokoplay/DutyDeck). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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