About Dgraph MCP Server
Dgraph MCP Server is an MCP server published by johnymontana in the Developer Tools category: a Model Context Protocol (MCP) server implementation for Dgraph graph database, built using the [mcp-go](https://github.com/mark3labs/mcp-go) library.
The repository has 5 stars and 3 forks, with the last commit a year ago. Six months or more without a commit doesn't mean the server is broken, but check the open issues before depending on it in production.
Install
git clone https://github.com/johnymontana/dgraph-mcp-serverThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
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README
Dgraph MCP Server
A Model Context Protocol (MCP) server implementation for Dgraph graph database, built using the mcp-go library.
Overview
This project implements an MCP server that allows LLM applications to interact with a Dgraph database. It provides tools for:
- Executing DQL queries
- Performing mutations
- Altering the schema
- Retrieving the current schema
Prerequisites
- Go 1.18 or higher
- Dgraph database (running locally or remotely)
Installation
- Clone this repository
- Install dependencies:
go mod download
Configuration
The server can be configured using environment variables:
DGRAPH_HOST: Dgraph host address (default:localhost:9080)
Usage
Running the Server
go run main.go
The server uses standard input/output for communication with LLM applications.
Available Tools
1. dgraph_query
Execute a DQL query against Dgraph.
Parameters:
query(string, required): The DQL query to executevariables(object, optional): Variables for the query
Example:
{
"tool": "dgraph_query",
"params": {
"query": "{ me(func: has(name)) { name } }"
}
}
2. dgraph_mutate
Execute a mutation against Dgraph.
Parameters:
mutation(string, required): The RDF mutation to executecommit(boolean, optional): Whether to commit the transaction (default: true)
Example:
{
"tool": "dgraph_mutate",
"params": {
"mutation": "_:person <name> \"John Doe\" .",
"commit": true
}
}
3. dgraph_alter_schema
Alter the Dgraph schema.
Parameters:
schema(string, required): The schema definition to apply
Example:
{
"tool": "dgraph_alter_schema",
"params": {
"schema": "name: string @index(exact) ."
}
}
Available Resources
1. dgraph://schema
Returns the current Dgraph schema.
Integration with LLM Applications
This server can be integrated with any LLM application that supports the Model Context Protocol (MCP). The server communicates via standard input/output, making it easy to integrate with various LLM frameworks.
Example Queries
Basic Query
{
people(func: has(name)) {
name
age
friends {
name
}
}
}
Adding Data
_:alice <name> "Alice" .
_:alice <age> "30" .
_:bob <name> "Bob" .
_:bob <age> "32" .
_:alice <friend> _:bob .
Schema Definition
name: string @index(exact) .
age: int .
friend: [uid] .
License
MIT
README fetched from the repository 7 days ago. The original is authoritative.