mysql_concat

Concatenate multiple columns with an optional separator.

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

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/io-github-neverinfamous-mysql-mcp/mysql-concat.md

WHAT IT DOES

What mysql_concat does on Mysql Mcp

AI agents call mysql_concat to retrieve information from Mysql Mcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why mysql_concat is rated Low

The tool performs string concatenation on existing columns, which is a read-only operation. It returns a result set without executing INSERT, UPDATE, DELETE, or DDL statements. The operation has no side effects on data persistence, classification as a low-severity Read activity. No data is created, modified, or destroyed.

From the tool's definition Tool name 'mysql_concat' and description 'Concatenate multiple columns with an optional separator' indicate a query/transformation operation that retrieves and reformats column data without modifying the underlying database.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs mysql_concat 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_concat, this is the rule to start with:

mysql_concat Allowed

mysql_concat is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "mysql_concat": {}
  }
}

ALLOW ONLY 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_concat call is checked against it from then on.

FAQ

Questions about mysql_concat

What does the mysql_concat tool do? +

Concatenate multiple columns with an optional separator. It is categorised as a Read tool in the Mysql Mcp MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on mysql_concat? +

Register the Mysql MCP server in PolicyLayer and add a rule for mysql_concat: 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_concat? +

mysql_concat is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit mysql_concat? +

Yes. Add a rate_limit block to the mysql_concat 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_concat completely? +

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

mysql_concat 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.

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