> ## Documentation Index
> Fetch the complete documentation index at: https://docs.querybear.com/llms.txt
> Use this file to discover all available pages before exploring further.

# PlanetScale MCP Server

> Connect PlanetScale serverless MySQL to Claude, Cursor, ChatGPT, Codex, and Windsurf with QueryBear — a secure, read-only MCP server.

[PlanetScale](https://planetscale.com) is a serverless MySQL platform built on Vitess, with database branching and online schema changes. QueryBear connects over the standard MySQL protocol, giving your AI clients safe, read-only access through QueryBear's [security gateway](/features/security).

## Get your PlanetScale connection details

1. Open your database in the [PlanetScale dashboard](https://app.planetscale.com).
2. Click **Connect**.
3. Choose **General** (or "Connect with: MySQL") and copy the credentials — host, username, password, and database. PlanetScale generates a dedicated username/password per connection.

## Create a read-only user

PlanetScale manages users through its dashboard rather than raw `CREATE USER`. When generating a password under **Connect**, select a role with **read-only** access if your plan supports it. Otherwise, create the password and rely on QueryBear's gateway to enforce read-only.

## Add the connection to QueryBear

In the [QueryBear dashboard](https://querybear.com/dashboard) → **Connections** → **New connection** → **MySQL**. Enter the PlanetScale host, username, password, database, and set **SSL mode `require`** — PlanetScale **mandates TLS** and rejects unencrypted connections.

## PlanetScale-specific notes

* **TLS is required.** Connections without SSL fail immediately. Always use `require`.
* **No foreign key constraints by default:** PlanetScale historically disabled FKs (Vitess). This doesn't affect read queries, but your schema may not show FK relationships.
* **Branching:** Connect QueryBear to a specific branch's credentials to query that branch — e.g. point at a dev branch that's a copy of production.
* **Multi-statement queries blocked:** QueryBear's parser rejects them regardless of PlanetScale's settings.

## Connect to your AI client

* [Claude Code](/guides/mysql-claude-code)
* [Claude Desktop](/guides/mysql-claude-desktop)
* [Cursor](/guides/mysql-cursor)
* [Codex](/guides/mysql-codex)
* [Windsurf](/guides/mysql-windsurf)
* [ChatGPT](/guides/mysql-chatgpt)

## Related

* [MySQL MCP server](/databases/mysql)
* [Security model](/features/security)