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Gel Database MCP Server

by christian561

A TypeScript-based Model Context Protocol (MCP) server designed to streamline Gel database operations with EdgeQL queries. It provides tools for LLM Agents to automate learning about your schema, and writing, validating, and executing database queries.

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What is Gel Database MCP Server?

The Gel Database MCP Server is a TypeScript-based server that implements the Model Context Protocol. It allows LLM agents to interact with Gel databases using EdgeQL queries, providing tools for schema discovery, query validation, and execution.

How to use Gel Database MCP Server?

To use the server, install dependencies, initialize a Gel project, generate EdgeQL JavaScript query builder files, update connection settings, build the project, and then run the server. The README provides a quick start guide with detailed instructions and code snippets. You can connect the MCP server in Cursor by adding a new server with the command node your/full/path/to/build/index.js.

Key features of Gel Database MCP Server

  • Schema Discovery (describe-schema)

  • Query Validation (validate-query)

  • EdgeQL Query Execution (execute-edgeql)

  • Gel Documentation Search (search-gel-docs)

  • Typescript Query Execution (execute-typescript)

Use cases of Gel Database MCP Server

  • Automating database interactions with LLM agents

  • Generating and validating EdgeQL queries using natural language

  • Integrating Gel databases with tools like Cursor Agent and Claude Code

  • Building applications that require dynamic database querying based on user input

  • Simplifying database schema exploration and understanding for LLMs

FAQ from Gel Database MCP Server

What is the Model Context Protocol (MCP)?

The Model Context Protocol is a standard for enabling LLMs to interact with external tools and services, allowing them to perform tasks beyond simple text generation.

What is Gel?

Gel is a database system that uses EdgeQL as its query language.

Why use this server?

This server simplifies the integration of Gel databases with LLM agents, enabling natural language querying and automation of database operations.

What LLMs are compatible with this server?

While primarily tested with Cursor's agent using Claude-3.7-sonnet-thinking, it should work with other agents and LLMs that support the Model Context Protocol.

How do I update the server after schema changes?

After any schema changes, re-run the command npx @gel/generate edgeql-js to regenerate the EdgeQL JavaScript query builder files.