add_connection · Mysql Mcp Webui MCP: Risk & Policy

WHAT IT DOES

What add_connection does on Mysql Mcp Webui

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

WHY IT NEEDS A POLICY

Why add_connection needs a policy

Adding a new database connection modifies server configuration by storing credentials and connection parameters. This is a Write operation (creates/modifies data reversibly) rather than Read (no side effects).

From the tool's definition Tool description states: 'Add a new MySQL connection to the server' and 'create a new MySQL connection with the provided credentials.' This creates new persistent configuration data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_connection Rate-limited

add_connection 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_connection": {
      "limits": [
        {
          "counter": "add_connection_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 Mysql Mcp Webui, so you can run agents against it safely.

FAQ

Questions about add_connection

What does the add_connection tool do? +

Add a new MySQL connection to the server. This tool allows you to create a new MySQL connection with the provided credentials. The connection will be tested before being saved to ensure it. It is categorised as a Write tool in the Mysql Mcp Webui 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_connection? +

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

What risk level is add_connection? +

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

Can I rate-limit add_connection? +

Yes. Add a rate_limit block to the add_connection 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_connection completely? +

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

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