post_tweet · MCP-Twikit MCP: Risk & Policy

WHAT IT DOES

What post_tweet does on MCP-Twikit

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

WHY IT NEEDS A POLICY

Why post_tweet needs a policy

This tool creates new data (tweets) on Twitter, which is reversible (tweets can be deleted). It does not execute arbitrary code, delete data irreversibly, or move money. The severity is medium because misuse could result in unwanted public posts, spam, misinformation, or reputational harm, but the action is not financially damaging or permanently destructive.

From the tool's definition Tool name 'post_tweet' and description 'Post a tweet' indicate creation of new content on Twitter. Capability to add 'optional media, reply, and tags' confirms it modifies the platform state by creating new public posts.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

post_tweet Rate-limited

post_tweet 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": {
    "post_tweet": {
      "limits": [
        {
          "counter": "post_tweet_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 MCP-Twikit, so you can run agents against it safely.

FAQ

Questions about post_tweet

What does the post_tweet tool do? +

Post a tweet with optional media, reply, and tags. It is categorised as a Write tool in the MCP-Twikit MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on post_tweet? +

Register the MCP-Twikit MCP server in PolicyLayer and add a rule for post_tweet: 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 MCP-Twikit. Nothing to install.

What risk level is post_tweet? +

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

Can I rate-limit post_tweet? +

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

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

post_tweet is provided by the MCP-Twikit MCP server (zo-valentine/mcp-twikit). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.