tiger_refresh_token

THE RISK

Low Risk

Why tiger_refresh_token needs a policy

The tool name 'tiger_refresh_token' suggests an authentication token refresh operation, which is an administrative/auth action rather than directly financial, destructive, execute, read, or write in the data sense. Token refresh is a session management operation.

From the tool's definition Tool name: tiger_refresh_token; description is empty and uninformative

Documented attack patterns abuse exactly the kind of access tiger_refresh_token gives an agent:

POLICY

How to control tiger_refresh_token

PolicyLayer is an MCP gateway — it sits between your AI agents and Tiger MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for tiger_refresh_token:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "tiger_refresh_token": {
      "limits": [
        {
          "counter": "tiger_refresh_token_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

tiger_refresh_token gets a rate cap, and everything else on the server is denied unless you say otherwise.

Create a free account and register Tiger MCP — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

SET A RULE FOR THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Tool risk categories → How PolicyLayer classifies MCP tools by what they can do.
MCP tool → What an MCP tool is and how clients discover and call it.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about tiger_refresh_token

What does the tiger_refresh_token tool do? +

tiger_refresh_token. It is categorised as a Other tool in the Tiger MCP MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on tiger_refresh_token? +

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

What risk level is tiger_refresh_token? +

tiger_refresh_token is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit tiger_refresh_token? +

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

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

tiger_refresh_token is provided by the Tiger MCP server (luxiaolei/tiger-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Tiger MCP tool call.

Start from Tiger MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →