add_mssql_user

Add user to MSSQL database

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-mssql-user.md

WHAT IT DOES

What add_mssql_user does on 20i MCP Server

AI agents use add_mssql_user 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_mssql_user is rated Medium

Adding a user to an MSSQL database is a write operation that modifies database state by creating a new user credential/role. It is reversible (the user can be deleted), so it does not qualify as Destructive. It does not execute arbitrary code or trigger external operations unpredictably (Execute), nor does it move money (Financial).

From the tool's definition Tool name is 'add_mssql_user' and description states 'Add user to MSSQL database' — this creates a new database user account, which is a reversible modification to database access configuration.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs add_mssql_user 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_mssql_user, this is the rule to start with:

add_mssql_user Rate-limited

add_mssql_user 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_mssql_user": {
      "limits": [
        {
          "counter": "add_mssql_user_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_mssql_user call is checked against it from then on.

FAQ

Questions about add_mssql_user

What does the add_mssql_user tool do? +

Add user to MSSQL database. 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_mssql_user? +

Register the 20i MCP Server MCP server in PolicyLayer and add a rule for add_mssql_user: 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_mssql_user? +

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

Can I rate-limit add_mssql_user? +

Yes. Add a rate_limit block to the add_mssql_user 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_mssql_user completely? +

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

add_mssql_user 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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