azuresql-db-dab

A way to create REST and GraphQL web APIs over a local Azure SQL Database without writing application code. REST and GraphQL are two common formats that let other software read and change data over the web.

In plain words
What is it for?
Expose tables as APIs, provide create/read/update/delete operations, and give web or mobile applications access to Azure SQL data through REST or GraphQL.
Why use it?
It removes the need to build and maintain a separate API layer for basic database access. You describe database tables as entities in a configuration file, and Data API Builder serves them.

Skill for Claude CodeCodex

Part of the azure-sql-database-container plugin — 17 skills shipped together

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/microsoft/azure-sql-database-container/azuresql-db-dab
Any agent
npx skills add microsoft/azure-sql-database-container --skill azuresql-db-dab
Clone the repo
git clone --depth 1 https://github.com/microsoft/azure-sql-database-container

Made for: Claude Code, Codex.

Or install azure-sql-database-container, the plugin that ships this one along with the rest of its 17 skills.

Per session 192 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,466 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00192 $0.02466
Opus 5 $0.00096 $0.01233
Sonnet 5 $0.00038 $0.00493
Haiku 4.5 $0.00019 $0.00247

Measured 3d ago against content hash f8ae4b42891f, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

azuresql-db-dab scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl http://localhost:5000/api/Book
skills/azuresql-db-dab/SKILL.md · 170 lines

How it starts

The opening of the file, as written. The whole thing — 170 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Instant REST + GraphQL API on the Azure SQL Database container with Data API Builder

Generate a full REST and GraphQL API over the local Azure SQL Database container (Private Preview) with no application code, using Data API Builder (DAB) - Microsoft's first-party open-source engine. You describe tables as entities in dab-config.json; DAB serves them. DAB connects over the normal TDS protocol with a plain connection string, so no change tracking or special engine feature is needed.

Load-bearing facts (inlined; full engine detail in azuresql-db-container)

  • This is the Azure SQL Database engine (Private Preview), not the SQL Server image mcr.microsoft.com/mssql/server. SERVERPROPERTY('EngineEdition') returns 5, SERVERPROPERTY('Edition') returns 'SQL Azure'.
  • Image: sqldbpreview-dpgaeqhmgphzd4bk.azurecr.io/azure-sql/db-dev:latest (x64, linux/amd64). Registry is private: sign in first with docker login sqldbpreview-dpgaeqhmgphzd4bk.azurecr.io using the shared pull-only credentials from https://aka.ms/sqldbcontainerpreview-signup (they may rotate). Registry and tag are provisional during Private Preview.
  • Required env: ACCEPT_EULA=Y and a complex MSSQL_SA_PASSWORD (8+ chars, upper/lower/digit/symbol). Engine listens on 1433.
  • The engine does NOT auto-create databases. Run CREATE DATABASE appdb on a master connection before DAB connects with Database=appdb. Do not use USE to switch databases (in a user-database session it returns Msg 40508); select the database in the connection string.
  • On a non-x64 host add --platform linux/amd64.

For the full engine model (readiness loop, vectors, troubleshooting) see the azuresql-db-container skill. To start the container and provision appdb first, use azuresql-db-container or azuresql-db-scaffold.

Step 1: install DAB

Two supported ways. Pick the CLI for local dev; pick the container to wire DAB into a compose stack (see references/dab-snippets.md).

Read the full file on GitHub · 170 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 170 lines · 192 tokens per session scan A f8ae4b42891f

Subscribe to this mod's changes

azuresql-db-dab is a skill published in the GitHub repository microsoft/azure-sql-database-container (16 stars, last pushed 2d ago), licensed MIT. It adds 192 tokens to every session and 2,466 once invoked, about $0.0010 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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