starbucks_login · Mcp Starbucks MCP: Risk & Policy

WHAT IT DOES

What starbucks_login does on Mcp Starbucks

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

WHY IT NEEDS A POLICY

Why starbucks_login needs a policy

Login creates an authenticated session (a Write/state-change operation), but its primary risk is that it gates Financial and Destructive capabilities. The tool itself doesn't move money, but it is a prerequisite that enables high-severity sibling tools like place_order and redeem_reward.

From the tool's definition 'Authenticate with your Starbucks account using email and password' — establishes a session/auth state; sibling tools include place_order, redeem_reward, and reorder_favorite indicating financial operations become possible post-login

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

starbucks_login Rate-limited

starbucks_login 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": {
    "starbucks_login": {
      "limits": [
        {
          "counter": "starbucks_login_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 Starbucks, so you can run agents against it safely.

FAQ

Questions about starbucks_login

What does the starbucks_login tool do? +

Authenticate with your Starbucks account using email and password. Required to place orders, access Starbucks Rewards, and view order history. It is categorised as a Write tool in the Mcp Starbucks MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on starbucks_login? +

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

What risk level is starbucks_login? +

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

Can I rate-limit starbucks_login? +

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

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

starbucks_login is provided by the Mcp Starbucks MCP server (markswendsen-code/mcp-starbucks). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.