keep-session-alive

THE RISK

Low Risk

Why keep-session-alive needs a policy

This tool performs verification and token refresh operations, which are read-only authentication maintenance activities. It does not modify dashboard resources, execute arbitrary operations, delete data, or move funds. While it touches authentication infrastructure, the scope is limited to maintaining the current session without side effects on managed resources.

From the tool's definition Tool name 'keep-session-alive' and description 'Verify and refresh the current authentication token' indicate checking and refreshing existing authentication state, with no data retrieval, modification, creation, or deletion of resources.

Documented attack patterns abuse exactly the kind of access keep-session-alive gives an agent:

POLICY

How to control keep-session-alive

PolicyLayer is an MCP gateway — it sits between your AI agents and PI API MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for keep-session-alive:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "keep-session-alive": {}
  }
}

keep-session-alive is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

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

CAP 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.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about keep-session-alive

What does the keep-session-alive tool do? +

Verify and refresh the current authentication token (also used for token-based authentication). It is categorised as a Read tool in the PI API MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on keep-session-alive? +

Register the PI API MCP Server MCP server in PolicyLayer and add a rule for keep-session-alive: 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 PI API MCP Server. Nothing to install.

What risk level is keep-session-alive? +

keep-session-alive is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit keep-session-alive? +

Yes. Add a rate_limit block to the keep-session-alive 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 keep-session-alive completely? +

Set action: deny in the PolicyLayer policy for keep-session-alive. 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 keep-session-alive? +

keep-session-alive is provided by the PI API MCP Server MCP server (mingzilla/pi-api-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every PI API MCP Server tool call.

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

CHECK YOUR STACK →