add_field_to_type · Record MCP Server MCP: Risk & Policy

WHAT IT DOES

What add_field_to_type does on Record MCP Server

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

WHY IT NEEDS A POLICY

Why add_field_to_type needs a policy

This tool creates or modifies data reversibly by extending a schema definition. While it changes system structure, the modification is not destructive (the schema change can be undone or fields can be removed later), and it does not delete, execute code, or commit financial transactions.

From the tool's definition Tool adds a new field to an existing review type schema, which modifies the structure of data stored in the system. Description explicitly states 'Add a new field' which is a create/modify operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_field_to_type Rate-limited

add_field_to_type 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_field_to_type": {
      "limits": [
        {
          "counter": "add_field_to_type_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 Record MCP Server, so you can run agents against it safely.

FAQ

Questions about add_field_to_type

What does the add_field_to_type tool do? +

Add a new field to an existing review type schema. It is categorised as a Write tool in the Record 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_field_to_type? +

Register the Record MCP Server MCP server in PolicyLayer and add a rule for add_field_to_type: 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 Record MCP Server. Nothing to install.

What risk level is add_field_to_type? +

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

Can I rate-limit add_field_to_type? +

Yes. Add a rate_limit block to the add_field_to_type 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_field_to_type completely? +

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

add_field_to_type is provided by the Record MCP Server MCP server (sanggggg/record-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.