add_meme · Meme MCP Server MCP: Risk & Policy

WHAT IT DOES

What add_meme does on Meme MCP Server

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

WHY IT NEEDS A POLICY

Why add_meme needs a policy

This tool creates and stores new meme images in the local collection. It is a Write operation because it irreversibly adds data to the meme repository, though not destructively. Severity is medium because a compromised agent could fill storage with unwanted content or use it as a vector for storing malicious images. The ability to accept URLs adds risk of indirect injection attacks or automated spam generation.

From the tool's definition Tool description states '添加新的表情包' (add new meme/emoji) and explicitly mentions 'supports adding from local file paths or network URLs'. The tool creates/stores new meme data in the system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_meme Rate-limited

add_meme 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": {
    "add_meme": {
      "limits": [
        {
          "counter": "add_meme_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 Meme MCP Server, so you can run agents against it safely.

FAQ

Questions about add_meme

What does the add_meme tool do? +

添加新的表情包。支持从本地文件路径或网络URL添加。当用户想要保存或收藏一张新图片作为表情包时使用。. It is categorised as a Write tool in the Meme 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 add_meme? +

Register the Meme MCP Server MCP server in PolicyLayer and add a rule for add_meme: 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 Meme MCP Server. Nothing to install.

What risk level is add_meme? +

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

Can I rate-limit add_meme? +

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

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

add_meme is provided by the Meme MCP Server MCP server (shengchao73/meme-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.