100% Free Developer Tool · Zero Data Ingestion

Microsoft Data API Builder (DAB) Studio & AI MCP Exporter

Instantly transform Microsoft Fabric SQL, Lakehouse, and Azure SQL databases into enterprise-grade REST, GraphQL, and Model Context Protocol (MCP) APIs. Enforce Microsoft Entra ID Row-Level Security (RLS) and arm AI Agents (Claude, Cursor, OpenAI) with safe, typed database tools—zero backend code required.

Quick Jump: Launch DAB Studio DAB+MCP Architecture Why DAB for AI Comparison Table FAQ Read In-Depth Guide

Interactive Data API Builder (DAB) Studio

Follow the 3-step workflow below to extract schema, design your ER graph, and export AI MCP tools.

100% Client-Side Execution

Data API Builder (DAB) Studio Community Sandbox Mode

Governed Data API & AI Agent Studio

Turn Microsoft Fabric SQL, Warehouses, and Azure SQL into secure REST, GraphQL, and AI Model Context Protocol (MCP) tools.

Deploy Live APIs

Select Target Database Engine

Choose your cloud SQL engine or use a 1-click pre-configured schema starter.

Or pick a 1-click starter template:

Interactive Architecture

How Data API Builder Compiles Entities into Live AI Tools

Explore how schema, configuration, and security policies compile into REST, GraphQL, and Model Context Protocol (MCP) endpoints.

DAB + MCP = SQL MCP

“You don't write code. You write configuration.”

You don't write an MCP server — you enable /mcp on Data API Builder (DAB), and your database entities + column descriptions + Entra ID permissions automatically become the AI tools.

Simulate Traffic Flow:

1. Data & Config Inputs

Database Schema

Tables · Views · Stored Procs

Target Database(s)

Fabric SQL · Lakehouse · PG

dab-config.json

Entities, Relations & Claims

Data API Builder Engine

Zero-Trust Gateway

Endpoint Compilation Pipeline

Runtime Engine

In-Memory Model

Endpoint Factory

Security & Query Optimization

Query Builder

Entra ID & RLS

@claims Filter

Predicate:WHERE tenant_id = @claims.tid

3. Protocols & Consumers

REST

Methods & Filters

OData $filter · $select

{...}

Client

Web / Mobile Apps

MCP

SQL MCP

Tools & Resources

/mcp

AI Agent

Claude · Cursor

GraphQL

Types & Mutations

Nested Relink Resolvers

⚛️ SDL

Client

Microservices

Live Code Inspector:

Target: Claude 3.7 / Cursor AI Agent

Model Context Protocol (MCP) Tool Schema — Consumed by Claude Desktop & Cursorsyntax: json

{
  "name": "query_fabric_orders",
  "description": "Fetch enterprise sales orders with Entra ID tenant isolation and pagination",
  "inputSchema": {
    "type": "object",
    "properties": {
      "customerId": { "type": "integer", "description": "Target customer ID" },
      "minTotal": { "type": "number", "description": "Minimum order amount filter" },
      "status": { "type": "string", "enum": ["Completed", "Pending", "Shipped"] }
    },
    "required": ["customerId"]
  }
}

1. Zero Custom Backend Code

Stop building and maintaining redundant Express/FastAPI boilerplate. DAB compiles production endpoints directly from your schema with connection pooling and pagination built in.

2. Instant AI Model Context (MCP)

Meynos automatically exports your DAB config into Model Context Protocol (MCP) servers. Claude and Cursor immediately gain safe, typed query tools without risk of raw SQL injection.

3. Native Entra ID Security

Enterprise RBAC and `@claims` session context predicates enforce Row-Level Security on every request, ensuring complete multi-tenant data isolation for humans and AI agents alike.

The Problem & The Solution

Why Modern Teams Need Data API Builder for AI Copilots

Giving generative AI direct SQL access is dangerous, unscalable, and breaches enterprise compliance. Data API Builder creates an intelligent, zero-trust API gateway between your data and AI agents.

The Danger of Direct SQL Agents

AI agents executing raw SQL can hallucinate joins, trigger expensive unindexed table scans, bypass row-level permissions, and inadvertently leak cross-tenant data.

Zero-Trust Entra ID & RLS

DAB evaluates security predicates dynamically on every request. Even if an AI agent requests all rows, DAB automatically appends WHERE tenant_id = @claims.tid.

1-Click MCP for Claude & Cursor

Meynos automatically compiles your DAB schema into Model Context Protocol (MCP) definitions. AI agents receive strongly-typed tools to safely search and mutate records.

Architecture Comparison: Direct SQL vs. DAB vs. Custom Backend

Compare security, development velocity, and maintenance overhead across different AI data access strategies.

Capability	Raw SQL with AI Agents	Custom API Backend (Node/Python)	Microsoft Data API Builder (DAB)
Time to Production	1 day (High risk)	3 - 6 weeks of boilerplate	Instant (5 minutes)
Row-Level Security (RLS)	❌ AI can bypass prompts	⚠️ Manual auth middleware code	✅ Native Entra ID @claims enforcement
AI Agent Tool Integration	❌ Unstructured text dumps	⚠️ Manual OpenAPI / MCP maintenance	✅ Automated Claude/Cursor MCP Tool Exporter
GraphQL & REST Support	❌ None	⚠️ Requires separate resolvers	✅ Unified REST + GraphQL from 1 config
Database Engine Compatibility	Varies by driver	Custom ORM mapping	✅ Fabric SQL, Azure SQL, Postgres, Cosmos

Frequently Asked Questions

Everything you need to know about Microsoft Data API Builder and AI Agent Tooling.

No. The Meynos DAB Studio runs 100% client-side in your browser via optimized WebAssembly and JavaScript parsers. Your DDL scripts, connection secrets, and generated JSON configurations never leave your machine.