sql_format · Tools MCP: Risk & Policy

WHAT IT DOES

What sql_format does on Tools

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

PARAMETERS

Parameter	Type	Required	Description
`input`	string	Yes	SQL string
`action`	string	—	Action (default: beautify)

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why sql_format needs a policy

sql_format is a text transformation utility that processes SQL code for readability or optimization purposes. It modifies the representation of SQL (reformatting, minification, keyword casing) without executing queries or affecting databases. This qualifies as Write since it creates or modifies data reversibly (the original SQL logic remains unchanged, only presentation changes).

From the tool's definition The tool description states it can 'Beautify, minify, or uppercase SQL keywords' - this involves modifying the formatting of SQL text.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

sql_format Rate-limited

sql_format 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": {
    "sql_format": {
      "limits": [
        {
          "counter": "sql_format_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 Tools, so you can run agents against it safely.

FAQ

Questions about sql_format

What does the sql_format tool do? +

Beautify, minify, or uppercase SQL keywords. It is categorised as a Write tool in the Tools MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does sql_format accept? +

sql_format accepts 2 parameters: input, action. Required: input. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on sql_format? +

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

What risk level is sql_format? +

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

Can I rate-limit sql_format? +

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

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

sql_format is provided by the Tools MCP server (https://www.jiebang.site/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.