agregarColumna · MyPos MCP: Risk & Policy

WHAT IT DOES

What agregarColumna does on MyPos MCP

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

WHY IT NEEDS A POLICY

Why agregarColumna needs a policy

'agregarColumna' (add column) is a DDL operation that modifies a database table schema by adding a new column. This is a reversible write/schema-modification operation (the column can later be dropped), though it does alter database structure. It does not delete data, execute arbitrary code, or move money.

From the tool's definition Tool name 'agregarColumna' means 'add column' in Spanish; server description mentions MySQL/PostgreSQL database operations; sibling tools include schema modification tools like 'cambiarTipoColumna', 'crearTabla', 'eliminarColumna'

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

agregarColumna Rate-limited

agregarColumna 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": {
    "agregarColumna": {
      "limits": [
        {
          "counter": "agregarcolumna_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about agregarColumna

What does the agregarColumna tool do? +

Sigue estas reglas para agregar una columna:\n. It is categorised as a Write tool in the MyPos MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on agregarColumna? +

Register the MyPos MCP server in PolicyLayer and add a rule for agregarColumna: 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 MyPos MCP. Nothing to install.

What risk level is agregarColumna? +

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

Can I rate-limit agregarColumna? +

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

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

agregarColumna is provided by the MyPos MCP server (yonsn76/mypos-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.