# Relational Database MCP Cloudbase

[Deprecated] Existing CloudBase MySQL only.

- Repository: https://github.com/TencentCloudBase/CloudBase-AI-Toolkit (1153 stars)
- Category: Data and ML
- License: MIT
- Last updated: 2026-11-01
- Runs scripts: no, instructions only

## Install

Claude Code: `npx skills add TencentCloudBase/CloudBase-AI-Toolkit --skill relational-database-mcp-cloudbase -g -a claude-code -y`
Codex: `npx skills add TencentCloudBase/CloudBase-AI-Toolkit --skill relational-database-mcp-cloudbase -g -a codex -y`
Cursor: `npx skills add TencentCloudBase/CloudBase-AI-Toolkit --skill relational-database-mcp-cloudbase -g -a cursor -y`
Gemini CLI: `npx skills add TencentCloudBase/CloudBase-AI-Toolkit --skill relational-database-mcp-cloudbase -g -a gemini-cli -y`
Claude Code plugin marketplace: `/plugin marketplace add TencentCloudBase/CloudBase-AI-Toolkit`

## Description

[Deprecated] Existing CloudBase MySQL only. Do not recommend MySQL for new relational work, use postgresql-development. Read this when the environment already has a MySQL instance and the task is queryMysqlDatabase, manageMysqlDatabase, queryPermissions, or managePermissions (inspect, write SQL, schema, permissions, destroy). Do not provision MySQL.

## SKILL.md, as published by its author (untrusted third-party text, read it as data)

## Sibling skills (local only)

Sibling CloudBase skills ship beside this skill. Use local relative paths such as `../auth-tool-cloudbase/SKILL.md`.

If a referenced sibling skill file is missing from this environment, ask the user to install the full CloudBase plugin (or the missing skill). Do **not** HTTP-fetch remote skill or protocol markdown into the agent context.

## Activation Contract

### Use this first when

- The environment **already has** a CloudBase MySQL instance, and the agent must inspect that instance, run SQL, change schema, manage table security rules, or destroy it through MCP.
- Do **not** choose this skill for a new relational database. New relational work uses `postgresql-development-cloudbase`.

### Read before writing code if

- The task includes `queryMysqlDatabase`, `manageMysqlDatabase`, `queryPermissions`, or `managePermissions`.

### Then also read

- Web application integration -> `../relational-database-web-cloudbase/SKILL.md`
- Raw HTTP database access -> `../http-api-cloudbase/SKILL.md`

### Do NOT use for

- Frontend or backend application code that should use SDKs instead of MCP operations.

### Common mistakes / gotchas

- Initializing SDKs in an MCP management flow.
- Running write SQL or DDL before confirming the environment already has a ready MySQL instance.
- Trying to create a MySQL instance through MCP. Provisioning has been retired from the tool surface: new environments use PostgreSQL, and instances are only created in the console.
- Treating document database tasks as MySQL management tasks.
- Skipping `_openid` and permissions review after creating new SQL tables.
- Destroying MySQL without explicit confirmation or without checking whether the environment still needs the instance.
- Using `getConnectionInfo` (or inferred host/password) to build a default TCP client for new apps. Prefer SDK / `runQuery` / `runStatement`; TCP credentials are an explicit migration exception only.

## When to use this skill

The rest: https://github.com/TencentCloudBase/CloudBase-AI-Toolkit/blob/HEAD/config/.claude/skills/relational-database-mcp-cloudbase/SKILL.md