mastodon_follow

Follow an account by handle (@user@domain) or local account ID. Rate-limited: 30/hour.

SERVERCrow SOURCEkh0pper/crow

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/kh0pper-crow/mastodon-follow.md

WHAT IT DOES

What mastodon_follow does on Crow

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

RISK

Why mastodon_follow is rated Medium

Following an account is a reversible social action that creates a new relationship/subscription on the platform. It modifies social graph state but does not delete data or execute code. It can be undone by unfollowing. The rate limit (30/hour) suggests the platform treats it as a write operation with potential for misuse (e.g., mass-following spam).

From the tool's definition Follow an account by handle (@user@domain) or local account ID

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mastodon_follow safely

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

mastodon_follow Rate-limited

mastodon_follow 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": {
    "mastodon_follow": {
      "limits": [
        {
          "counter": "mastodon_follow_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 Crow, apply this rule, and every mastodon_follow call is checked against it from then on.

FAQ

Questions about mastodon_follow

What does the mastodon_follow tool do? +

Follow an account by handle (@user@domain) or local account ID. Rate-limited: 30/hour. It is categorised as a Write tool in the Crow MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mastodon_follow? +

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

What risk level is mastodon_follow? +

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

Can I rate-limit mastodon_follow? +

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

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

mastodon_follow is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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