check_maybe

Check Maybe personal finance manager reachability via GET /. Returns 200 or 302 when service is up. Default port 3000.

SERVERMcp Nettools SOURCEaaronckj/mcp-nettools

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/aaronckj-mcp-nettools/check-maybe.md

WHAT IT DOES

What check_maybe does on Mcp Nettools

AI agents call check_maybe to retrieve information from Mcp Nettools without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why check_maybe is rated Low

This is a basic network diagnostic tool that queries the status of a Maybe personal finance manager instance. It uses a GET request which is inherently read-only and has no side effects beyond retrieving HTTP response status. While it targets a financial application, the tool itself only checks reachability without accessing financial data, moving money, or modifying any state.

From the tool's definition Tool performs a reachability check via GET request to a service endpoint, returning HTTP status codes (200 or 302) to indicate if the service is up or down. No data is modified, deleted, or financial transactions are executed.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs check_maybe safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mcp Nettools, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For check_maybe, this is the rule to start with:

check_maybe Allowed

check_maybe is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "check_maybe": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Mcp Nettools, apply this rule, and every check_maybe call is checked against it from then on.

FAQ

Questions about check_maybe

What does the check_maybe tool do? +

Check Maybe personal finance manager reachability via GET /. Returns 200 or 302 when service is up. Default port 3000. It is categorised as a Read tool in the Mcp Nettools MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on check_maybe? +

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

What risk level is check_maybe? +

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

Can I rate-limit check_maybe? +

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

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

check_maybe is provided by the Mcp Nettools MCP server (aaronckj/mcp-nettools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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