assume_bot · Mcp Bbs MCP: Risk & Policy

WHAT IT DOES

What assume_bot does on Mcp Bbs

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

WHY IT NEEDS A POLICY

Why assume_bot needs a policy

This tool sets/modifies the active context (a bot context) for subsequent operations. 'Takeover tools' implies it configures which bot is being controlled, which is a state-modification (Write). The word 'takeover' is slightly concerning but appears to refer to assuming control of a bot session rather than a destructive or financial action.

From the tool's definition Set active swarm bot context for takeover tools

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

assume_bot Rate-limited

assume_bot 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": {
    "assume_bot": {
      "limits": [
        {
          "counter": "assume_bot_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 Bbs, so you can run agents against it safely.

FAQ

Questions about assume_bot

What does the assume_bot tool do? +

Set active swarm bot context for takeover tools. It is categorised as a Write tool in the Mcp Bbs MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on assume_bot? +

Register the Mcp Bbs MCP server in PolicyLayer and add a rule for assume_bot: 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 Bbs. Nothing to install.

What risk level is assume_bot? +

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

Can I rate-limit assume_bot? +

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

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

assume_bot is provided by the Mcp Bbs MCP server (livingstaccato/mcp-bbs). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.