grant_role_to_user

Grant a role to a user (MySQL 8.0+).

SERVERMysql SOURCEmukul975/mysql-mcp-server

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/mukul975-mysql-mcp-server/grant-role-to-user.md

WHAT IT DOES

What grant_role_to_user does on Mysql

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

RISK

Why grant_role_to_user is rated Medium

Granting a role to a user modifies access control permissions in the database. This is a Write operation (modifying user privileges/roles) but has high severity because it can escalate privileges, potentially giving a user elevated access to sensitive data or administrative capabilities. It is reversible (roles can be revoked), so it does not qualify as Destructive.

From the tool's definition Grant a role to a user

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs grant_role_to_user safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Mysql, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For grant_role_to_user, this is the rule to start with:

grant_role_to_user Rate-limited

grant_role_to_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": {
    "grant_role_to_user": {
      "limits": [
        {
          "counter": "grant_role_to_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 Mysql, apply this rule, and every grant_role_to_user call is checked against it from then on.

FAQ

Questions about grant_role_to_user

What does the grant_role_to_user tool do? +

Grant a role to a user (MySQL 8.0+). It is categorised as a Write tool in the Mysql MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on grant_role_to_user? +

Register the Mysql MCP server in PolicyLayer and add a rule for grant_role_to_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 Mysql. Nothing to install.

What risk level is grant_role_to_user? +

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

Can I rate-limit grant_role_to_user? +

Yes. Add a rate_limit block to the grant_role_to_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 grant_role_to_user completely? +

Set action: deny in the PolicyLayer policy for grant_role_to_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 grant_role_to_user? +

grant_role_to_user is provided by the Mysql MCP server (mukul975/mysql-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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