youtube_set_thumbnail

내 영상의 사용자 지정 썸네일 변경을 미리 봅니다. 절대경로 JPEG/PNG 파일(최대 50 MB)과 confirm=true가 있어야 업로드합니다.

SERVERMimi Seed SOURCE@yoonion/mimi-seed-mcp

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/yoonion-mimi-seed-mcp/youtube-set-thumbnail.md

WHAT IT DOES

What youtube_set_thumbnail does on Mimi Seed

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

RISK

Why youtube_set_thumbnail is rated Medium

Modifies video metadata reversibly by uploading and setting a custom thumbnail image.

From the tool's definition change custom thumbnail, upload, JPEG/PNG file

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs youtube_set_thumbnail safely

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

youtube_set_thumbnail Rate-limited

youtube_set_thumbnail 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": {
    "youtube_set_thumbnail": {
      "limits": [
        {
          "counter": "youtube_set_thumbnail_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 Mimi Seed, apply this rule, and every youtube_set_thumbnail call is checked against it from then on.

FAQ

Questions about youtube_set_thumbnail

What does the youtube_set_thumbnail tool do? +

내 영상의 사용자 지정 썸네일 변경을 미리 봅니다. 절대경로 JPEG/PNG 파일(최대 50 MB)과 confirm=true가 있어야 업로드합니다. It is categorised as a Write tool in the Mimi Seed MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on youtube_set_thumbnail? +

Register the Mimi Seed MCP server in PolicyLayer and add a rule for youtube_set_thumbnail: 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 Mimi Seed. Nothing to install.

What risk level is youtube_set_thumbnail? +

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

Can I rate-limit youtube_set_thumbnail? +

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

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

youtube_set_thumbnail is provided by the Mimi Seed MCP server (@yoonion/mimi-seed-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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