alter_event

Alter a scheduled event.

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/alter-event.md

WHAT IT DOES

What alter_event does on Mysql

AI agents use alter_event 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 alter_event is rated Medium

ALTER EVENT modifies an existing scheduled event in MySQL, changing its definition, schedule, or body. This is a reversible modification (Write), not destructive. However, it carries high severity because altering scheduled events can change automated database operations, potentially affecting data integrity, replication, or critical maintenance tasks at scale.

From the tool's definition 'Alter a scheduled event' — modifies an existing scheduled database event

Attacks that exploit this kind of access

RECOMMENDED RULE

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

alter_event Rate-limited

alter_event 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": {
    "alter_event": {
      "limits": [
        {
          "counter": "alter_event_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 alter_event call is checked against it from then on.

FAQ

Questions about alter_event

What does the alter_event tool do? +

Alter a scheduled event. 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 alter_event? +

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

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

Can I rate-limit alter_event? +

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

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

alter_event 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

More on Mysql, and thousands of servers like it.

This server

All 233 Mysql tools →

Across the catalogue

calendar_create_event on Apple Apps MCP → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →