# mysql_update_data

A write tool on the Mysql MCP server.

Agent View of the PolicyLayer registry record for `mysql_update_data`. HTML page: https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-update-data

## Facts

- Tool: `mysql_update_data`
- Server: Mysql (`mukul975/mysql-mcp-server`) — https://policylayer.com/tools/mukul975-mysql-mcp-server.md
- Homepage: https://github.com/mukul975/mysql-mcp-server
- Risk category: Write (Medium risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "mysql_update_data",
    "arguments": {}
  }
}
```

## Why mysql_update_data is rated Medium

UPDATE operations modify data reversibly, fitting the Write category. Severity is high because unauthorized updates to production database records could corrupt business data, cause operational failures, or trigger cascading errors.

From the tool's own definition: "Tool name 'mysql_update_data' directly indicates data modification. Server description claims 'read-only queries' but this tool's name contradicts that."

## Use case

AI agents use mysql_update_data 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.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Mysql:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "mysql_update_data": {
      "limits": [
        {
          "counter": "mysql_update_data_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Mysql (232)

- `drop_event` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/drop-event.md
- `drop_partition` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/drop-partition.md
- `drop_role` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/drop-role.md
- `drop_stored_function` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/drop-stored-function.md
- `drop_stored_procedure` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/drop-stored-procedure.md
- `mysql_alter_table_drop_column` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-alter-table-drop-column.md
- `mysql_delete_data` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-delete-data.md
- `mysql_drop_database` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-database.md
- `mysql_drop_foreign_key` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-foreign-key.md
- `mysql_drop_index` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-index.md
- `mysql_drop_primary_key` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-primary-key.md
- `mysql_drop_table` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-table.md
- `mysql_drop_user` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-user.md
- `mysql_drop_view` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-view.md
- `mysql_kill_process` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-kill-process.md
- `mysql_reset_query_cache` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-reset-query-cache.md
- `mysql_revoke_privileges` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-revoke-privileges.md
- `mysql_truncate_table` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-truncate-table.md
- `create_event` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/create-event.md
- `create_stored_procedure` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/create-stored-procedure.md
- `mysql_analyze_table` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-analyze-table.md
- `mysql_auto_index_rebuild_scheduler` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-auto-index-rebuild-scheduler.md
- `mysql_flush_logs` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-flush-logs.md
- `mysql_flush_privileges` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-flush-privileges.md
- `mysql_flush_tables` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-flush-tables.md
- `mysql_lock_tables` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-lock-tables.md
- `mysql_optimize_table` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-optimize-table.md
- `mysql_repair_table` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-repair-table.md
- `mysql_set_variable` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-set-variable.md
- `mysql_unlock_tables` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-unlock-tables.md
- …and 202 more: https://policylayer.com/tools/mukul975-mysql-mcp-server.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=mukul975-mysql-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/mukul975-mysql-mcp-server