db_create_table · Database MCP Server MCP: Risk & Policy

WHAT IT DOES

What db_create_table does on Database MCP Server

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

WHY IT NEEDS A POLICY

Why db_create_table needs a policy

Creating a table is a write operation that adds new data structures to the database. While reversible via DROP TABLE, it commits schema changes that could affect application behavior if executed incorrectly. It is not destructive because the table creation itself can be undone, and it does not delete existing data.

From the tool's definition Tool name and description indicate table creation: 'Create a new table'. This is a data structure creation operation that modifies the database schema reversibly.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

db_create_table Rate-limited

db_create_table 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": {
    "db_create_table": {
      "limits": [
        {
          "counter": "db_create_table_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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

FAQ

Questions about db_create_table

What does the db_create_table tool do? +

Create a new table. It is categorised as a Write tool in the Database 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 db_create_table? +

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

What risk level is db_create_table? +

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

Can I rate-limit db_create_table? +

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

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

db_create_table is provided by the Database MCP Server MCP server (roilanrodriguez55/database-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.