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Gel Database MCP Server

MCP Server

Natural‑Language EdgeQL Interface for Gel Databases

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Updated Mar 23, 2025

About

A TypeScript MCP server that lets LLM agents learn, validate, and execute EdgeQL queries against Gel databases using natural language tools.

Capabilities

Resources
Access data sources
Tools
Execute functions
Prompts
Pre-built templates
Sampling
AI model interactions

Project Architecture Diagram

Overview

The Gel Database MCP Server is a TypeScript‑based Model Context Protocol (MCP) implementation that bridges the gap between AI assistants and a Gel database. By exposing a set of high‑level tools—schema discovery, query validation, execution, and documentation search—it removes the need for developers to hand‑craft EdgeQL queries or manually explore database schemas. This makes it especially valuable in rapid prototyping and data‑driven application development, where an LLM can take natural language prompts and translate them into safe, executable database operations.

At its core, the server provides four key capabilities. First, lets an LLM introspect the database structure: it returns a concise representation of entity types, properties, relationships, and constraints. This is crucial when the agent must understand what tables or objects exist before formulating a query. Second, offers syntax checking for raw EdgeQL without executing it, allowing developers to catch errors early and prevent accidental data manipulation. Third, gives the agent direct access to run arbitrary EdgeQL statements, enabling dynamic data retrieval or mutation based on user intent. Finally, allows the agent to query Gel’s own documentation, ensuring that it can reference API guidelines or schema nuances on demand.

These tools integrate seamlessly into existing MCP‑compatible workflows. For example, a Cursor agent can load the server as a command‑based MCP endpoint, then chain with and to create a full query‑generation pipeline: the agent first learns the schema, drafts an EdgeQL statement, validates it, and finally executes it. Because the server is written in TypeScript and relies on Gel’s code generation utilities, developers can keep their schema definitions up to date with minimal friction—re‑running the generator after any migration automatically refreshes the query builder files.

In real‑world scenarios, this MCP server shines in data‑centric applications such as dashboards, analytics tools, or conversational interfaces that need to pull live data from a Gel backend. It also supports educational use cases, where students can experiment with natural language queries against a controlled database without risking schema corruption. The ability to search Gel documentation from within the agent adds an extra layer of context, ensuring that generated queries adhere to best practices and versioned API constraints.

Overall, the Gel Database MCP Server delivers a robust, developer‑friendly bridge between LLMs and EdgeQL. Its combination of schema introspection, syntax safety, direct execution, and documentation lookup empowers AI assistants to interact with Gel databases confidently and efficiently, accelerating development cycles while maintaining data integrity.