Alice · Mcp Docs Server MCP: Risk & Policy

WHAT IT DOES

What Alice does on Mcp Docs Server

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

WHY IT NEEDS A POLICY

Why Alice needs a policy

Sending an email modifies state (creates a message in a mailbox/system) but is reversible (can be deleted or recalled in many systems). It does not execute arbitrary code, delete data irreversibly, or move money. However, it has moderate severity because unsupervised use could enable spam, phishing, or social engineering attacks, affecting the recipient.

From the tool's definition Tool description states 'Send an email' — this creates and transmits a new message, a reversible write action.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

Alice Rate-limited

Alice 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": {
    "Alice": {
      "limits": [
        {
          "counter": "alice_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 Docs Server, so you can run agents against it safely.

FAQ

Questions about Alice

What does the Alice tool do? +

Send an email. It is categorised as a Write tool in the Mcp Docs 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 Alice? +

Register the Mcp Docs Server MCP server in PolicyLayer and add a rule for Alice: 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 Docs Server. Nothing to install.

What risk level is Alice? +

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

Can I rate-limit Alice? +

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

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

Alice is provided by the Mcp Docs Server MCP server (@mastra/mcp-docs-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.