Medium Risk

velog_upload_image

로컬 이미지 파일을 Velog에 업로드하고 URL을 반환합니다. 반환된 URL을 마크다운 본문에 사용하세요.

How to control velog_upload_image ↓

What velog_upload_image does on Velog

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

Medium Risk

Why velog_upload_image needs a policy

This tool creates new image resources on Velog but does not execute arbitrary code, delete data, move money, or cause destructive changes. It reversibly adds content (images) to the platform, fitting the Write category. Severity is low because image uploads have limited blast radius—images can be replaced, deleted, or ignored without systemic damage.

From the tool's definition Tool uploads local image files to Velog and returns URLs for use in markdown content. The description explicitly states it uploads ('로컬 이미지 파일을 Velog에 업로드') and returns a URL, indicating a create/add operation that modifies the Velog service state by adding…

Documented attack patterns abuse exactly the kind of access velog_upload_image gives an agent:

How to control velog_upload_image

PolicyLayer is an MCP gateway — it sits between your AI agents and Velog, and nothing reaches the server without passing your rules. This is the rule we recommend for velog_upload_image:

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "velog_upload_image": {
      "limits": [
        {
          "counter": "velog_upload_image_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

velog_upload_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.

  1. Create a free account and register Velog — nothing to install.
  2. Add this policy — paste it, or build it visually.
  3. Point your MCP client (Claude, Cursor, anything) at your gateway URL.
LIMIT THIS TOOL →

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Related tools and policies

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Questions about velog_upload_image

What does the velog_upload_image tool do? +

로컬 이미지 파일을 Velog에 업로드하고 URL을 반환합니다. 반환된 URL을 마크다운 본문에 사용하세요. It is categorised as a Write tool in the Velog MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on velog_upload_image? +

Register the Velog MCP server in PolicyLayer and add a rule for velog_upload_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 Velog. Nothing to install.

What risk level is velog_upload_image? +

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

Can I rate-limit velog_upload_image? +

Yes. Add a rate_limit block to the velog_upload_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 velog_upload_image completely? +

Set action: deny in the PolicyLayer policy for velog_upload_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 velog_upload_image? +

velog_upload_image is provided by the Velog MCP server (seongwon030/velog_mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Velog tool call.

Start from Velog, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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29 Velog tools catalogued and risk-classified — across an index of 43,000+ MCP servers.

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