add_numbers · Crypto HTTP MCP Server MCP: Risk & Policy

WHAT IT DOES

What add_numbers does on Crypto HTTP MCP Server

AI agents call add_numbers as a supporting operation in Crypto HTTP MCP Server workflows.

WHY IT NEEDS A POLICY

Why add_numbers needs a policy

This tool performs a simple arithmetic operation (addition of two numbers) with no side effects, no data retrieval, no execution of external commands, no financial transactions, and no destructive actions. It is a pure computation utility, fitting 'Other' as it does not belong to any of the risk categories.

From the tool's definition Tool name: 'add_numbers', description: 'Add two numbers together.'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_numbers Rate-limited

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

View as policy code

policy.json

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

SET A RULE FOR THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Crypto HTTP MCP Server, so you can run agents against it safely.

FAQ

Questions about add_numbers

What does the add_numbers tool do? +

Add two numbers together. It is categorised as a Other tool in the Crypto HTTP MCP Server MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on add_numbers? +

Register the Crypto HTTP MCP Server MCP server in PolicyLayer and add a rule for add_numbers: 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 Crypto HTTP MCP Server. Nothing to install.

What risk level is add_numbers? +

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

Can I rate-limit add_numbers? +

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

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

add_numbers is provided by the Crypto HTTP MCP Server MCP server (joheiss/docker-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.