mysql_write_query

Execute a write SQL query (INSERT, UPDATE, DELETE). Uses prepared statements for safety.

SERVERMysql Mcp SOURCEoci:docker.io/writenotenow/mysql-mcp:v1.0.0

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/io-github-neverinfamous-mysql-mcp/mysql-write-query.md

WHAT IT DOES

What mysql_write_query does on Mysql Mcp

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

RISK

Why mysql_write_query is rated Medium

This tool creates or modifies data reversibly through SQL write operations. While it uses prepared statements to mitigate injection risks, it permits INSERT, UPDATE, and DELETE operations that alter database state. It does not permit DROP or other irreversible schema changes (which would be Destructive), so it falls into Write category.

From the tool's definition Tool name 'mysql_write_query' and description explicitly states 'Execute a write SQL query (INSERT, UPDATE, DELETE)'

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mysql_write_query safely

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

mysql_write_query Rate-limited

mysql_write_query 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": {
    "mysql_write_query": {
      "limits": [
        {
          "counter": "mysql_write_query_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 Mcp, apply this rule, and every mysql_write_query call is checked against it from then on.

FAQ

Questions about mysql_write_query

What does the mysql_write_query tool do? +

Execute a write SQL query (INSERT, UPDATE, DELETE). Uses prepared statements for safety. It is categorised as a Write tool in the Mysql Mcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mysql_write_query? +

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

What risk level is mysql_write_query? +

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

Can I rate-limit mysql_write_query? +

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

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

mysql_write_query is provided by the Mysql MCP server (oci:docker.io/writenotenow/mysql-mcp:v1.0.0). 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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