add

A other tool on the Mcp Test Servers MCP server.

SERVERMcp Test Servers SOURCEmsfeldstein/mcp-test-servers

Low RISK CLASS

Category Other

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/mcp-test-servers/add.md

WHAT IT DOES

What add does on Mcp Test Servers

AI agents call add as a supporting operation in Mcp Test Servers workflows.

RISK

Why add is rated Low

With no description and only the generic name 'add', there is insufficient information to confidently assign a risk category. 'Add' could mean adding numbers (Other/Read), adding a record (Write), or something else entirely. Defaulting to Other with low confidence due to lack of evidence.

From the tool's definition Tool name is 'add' and description is empty/uninformative. Cannot determine what this tool does from available information.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add safely

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

add Rate-limited

add 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": {
      "limits": [
        {
          "counter": "add_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}

SET A RULE FOR THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about add

What does the add tool do? +

add is a other tool on the Mcp Test Servers MCP server. It is categorised as a Other tool in the Mcp Test Servers MCP Server, which means it performs auxiliary operations.

How do I enforce a policy on add? +

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

What risk level is add? +

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

Can I rate-limit add? +

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

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

add is provided by the Mcp Test Servers MCP server (msfeldstein/mcp-test-servers). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Mcp Test Servers, and thousands of servers like it.

This server

All 67 Mcp Test Servers tools →

Across the catalogue

add on Ethereum Tools →add on Agent Jail →add on Agent Reliability Lab → The MCP Attack Database →

Guides

Roll out MCP under one policy →Tool risk categories →MCP tool →