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txn2/mcp-datahub

Overview

txn2/mcp-datahub

Go Library Overview¶

mcp-datahub is designed as a composable Go library. Import it into your own MCP server to add DataHub capabilities alongside other tools.

Why Use as a Library?¶

Custom Authentication: Add your own auth layer (OAuth, API keys, etc.)
Tenant Isolation: Filter results by tenant/organization
Audit Logging: Log all tool invocations for compliance
Tool Composition: Combine with Trino, NiFi, S3, and other MCP tools
Custom Middleware: Add rate limiting, caching, or transformations

Packages¶

pkg/client¶

The DataHub GraphQL client:

import "github.com/txn2/mcp-datahub/pkg/client"

c, err := client.New(client.Config{
    URL:   "https://datahub.company.com",
    Token: os.Getenv("DATAHUB_TOKEN"),
})

result, err := c.Search(ctx, "customers", client.WithLimit(20))

pkg/tools¶

The MCP toolkit for registering tools:

import "github.com/txn2/mcp-datahub/pkg/tools"

toolkit := tools.NewToolkit(datahubClient)
toolkit.RegisterAll(server)

pkg/types¶

Domain types for DataHub entities:

import "github.com/txn2/mcp-datahub/pkg/types"

var entity *types.Entity
var schema *types.SchemaMetadata
var lineage *types.LineageResult

Next Steps¶