add_country_block

Add a single country to the block list

SERVER20i MCP Server SOURCEcbrown35/20i-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/cbrown35-20i-mcp/add-country-block.md

WHAT IT DOES

What add_country_block does on 20i MCP Server

AI agents use add_country_block to create or update resources in 20i MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your 20i MCP Server environment.

RISK

Why add_country_block is rated Medium

This tool creates or modifies access control rules by adding countries to a blocklist, which is a Write operation (reversible configuration change). Severity is medium because misconfiguration could block legitimate traffic or be used to deny service, but the effect is limited to access control and can be undone.

From the tool's definition Tool name 'add_country_block' and description 'Add a single country to the block list' indicate creation/modification of a firewall or access control rule. This modifies hosting configuration state but is reversible (the block can be removed).

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add_country_block safely

PolicyLayer is an MCP gateway: it sits between your AI agents and 20i MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For add_country_block, this is the rule to start with:

add_country_block Rate-limited

add_country_block stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "add_country_block": {
      "limits": [
        {
          "counter": "add_country_block_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect 20i MCP Server, apply this rule, and every add_country_block call is checked against it from then on.

FAQ

Questions about add_country_block

What does the add_country_block tool do? +

Add a single country to the block list. It is categorised as a Write tool in the 20i MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on add_country_block? +

Register the 20i MCP Server MCP server in PolicyLayer and add a rule for add_country_block: 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 20i MCP Server. Nothing to install.

What risk level is add_country_block? +

add_country_block is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit add_country_block? +

Yes. Add a rate_limit block to the add_country_block 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_country_block completely? +

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

add_country_block is provided by the 20i MCP Server MCP server (cbrown35/20i-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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