poll_vote · Mastodon MCP: Risk & Policy

WHAT IT DOES

What poll_vote does on Mastodon

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

WHY IT NEEDS A POLICY

Why poll_vote needs a policy

Voting in a poll is a write action: it submits a choice to an external Mastodon poll. It is reversible in the sense that votes are typically final per-poll but do not delete or destroy data, and no financial transaction is involved. Misuse could cause the AI to cast unintended votes on behalf of the user, hence medium severity.

From the tool's definition 'Vote in a poll' — casting a vote creates/submits data on the platform

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

poll_vote Rate-limited

poll_vote 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": {
    "poll_vote": {
      "limits": [
        {
          "counter": "poll_vote_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 Mastodon, so you can run agents against it safely.

FAQ

Questions about poll_vote

What does the poll_vote tool do? +

Vote in a poll. It is categorised as a Write tool in the Mastodon MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on poll_vote? +

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

What risk level is poll_vote? +

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

Can I rate-limit poll_vote? +

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

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

poll_vote is provided by the Mastodon MCP server (vitexsoftware/mastodon-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

// THE FULL RECORD

poll_vote is one line of Mastodon's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

Teams ship this data inside their own products. See what a licence covers →