TiDB Cloud Zero Server

Give any AI agent a persistent MySQL database through the Model Context Protocol.

Zero config — the server automatically provisions a free TiDB Cloud Zero instance on first use. No signup, no API keys, no credentials. Just run it.

How It Works

┌─────────────┐     MCP      ┌──────────────┐    HTTPS     ┌─────────────────┐
│  AI Agent   │◄────────────►│  MCP Server  │◄────────────►│ TiDB Cloud Zero │
│  (Claude,   │   stdio/http │  (this repo) │  /v1beta/sql │  (free MySQL)   │
│   Cursor)   │              │              │   pure HTTP  │                 │
└─────────────┘              └──────────────┘              └─────────────────┘

On first query, the server calls POST https://zero.tidbapi.com/v1alpha1/instances to create a free database, then uses the TiDB Serverless HTTP API for all SQL — pure HTTPS, no MySQL driver, no persistent connections.

The instance credentials are cached locally (~/.tidb-cloud-zero-mcp/instance.json) and reused until expiry.

Quick Start

git clone https://github.com/siddontang/tidb-cloud-zero-mcp.git
cd tidb-cloud-zero-mcp
uv run server.py

That's it. No environment variables needed. The first query auto-provisions a database.

Connect to Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "tidb": {
      "command": "uv",
      "args": ["run", "--project", "/path/to/tidb-cloud-zero-mcp", "server.py"]
    }
  }
}

Connect to Claude Code

claude mcp add tidb -- uv run --project /path/to/tidb-cloud-zero-mcp server.py

Connect to Cursor / Windsurf

Add to your MCP settings:

{
  "tidb": {
    "command": "uv",
    "args": ["run", "--project", "/path/to/tidb-cloud-zero-mcp", "server.py"]
  }
}

HTTP Transport

uv run server.py --transport http
# Connect at http://localhost:8000/mcp

Bring Your Own Database (Optional)

If you already have a TiDB Cloud instance, set TIDB_URL:

export TIDB_URL="mysql://user:password@host/database"
uv run server.py

Or individual variables:

export TIDB_HOST="gateway01.us-west-2.prod.aws.tidbcloud.com"
export TIDB_USERNAME="your_user"
export TIDB_PASSWORD="your_password"
export TIDB_DATABASE="test"

Tools

Tool	Description
query	Run SELECT / SHOW / DESCRIBE / EXPLAIN
execute	Run CREATE / INSERT / UPDATE / DELETE / ALTER
batch_execute	Run multiple SQL statements sequentially
list_tables	List all tables with row counts
describe_table	Get table schema
get_database_info	Database info, version, and instance status

Example Interactions

Once connected, ask your AI agent:

• "Create a users table and add some sample data"
• "Show me all tables in the database"
• "Analyze the data in the orders table"
• "Write a query to find the top 10 customers by revenue"

The agent uses MCP tools to interact with TiDB Cloud Zero directly — no configuration needed.

Architecture

Every SQL query is a single HTTP POST to TiDB's Serverless HTTP API:

POST https://http-{host}/v1beta/sql
Authorization: Basic {base64(user:pass)}
TiDB-Database: {database}
Content-Type: application/json

{"query": "SELECT * FROM users"}

This means:

• No MySQL driver — works anywhere with HTTPS
• No connection management — stateless, each query is independent
• Edge-compatible — runs in serverless functions and edge workers
• Auto-provisioning — database created on first use via Zero API

Why TiDB Cloud Zero?

Feature	Benefit
Zero signup	No account, no credit card — just use it
MySQL compatible	Works with every tool, ORM, and language
Serverless	No provisioning, no maintenance
HTTP API	No drivers needed, pure HTTPS
Vector Search	Store embeddings alongside relational data
Disposable	72-hour instances for testing and demos

Development

uv sync                          # Install dependencies
uv run mcp dev server.py         # Test with MCP Inspector
uv run server.py --transport http # Run HTTP server

License

MIT

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