Skip to content
Datadef logo

Datadef

Generates editable cloud architecture and ER diagrams from plain-English descriptions, SQL schemas, Terraform or repositories.

From $8/moActively maintained

DataFor developersFree tier
datadef.io ↗XProduct Hunt
Open datadef.ioAlternativesSet it up for my teamIs Datadef yours? Claim the card →
At a glanceswept Oct 14, 2026

≈ 617visits/mo

Little sign of use · estimate, read Oct 14, 2026

For
Data engineers, consultants and teams diagramming data platforms, cloud architecture and ER schemas.
Price
From $8/mopricing page, read Oct 17, 2026Trial & discounts: 7-day free trial · student discount
Activity
Actively maintainedsite updated 3 weeks ago
Company
since 2024per their site
Used for
  • Generate ER diagrams from SQL, Prisma or DDL schemas
  • Draw cloud architecture from Terraform modules and resources
  • Keep diagrams synced with a Git repository's code
read off datadef.io on Oct 17, 2026
Worth knowingcomputed from what we read · each with its source
Pricingpricing page, read Oct 17, 2026

From $8/mo

Trial & discounts 7-day free trial · student discount

pricing page

The companyeach fact with its source · read Oct 17, 2026
Your datawhat they publish, each line with its page · read Oct 17, 2026

“We do not opt into OpenAI model training with your data.”

privacy policy ↗

These are Datadef's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read Oct 17, 2026
  • MCP serverio.datadef/mcpverified in the MCP registry
  • Stateanswers, 39 toolschecked 2026-10-17
  • Address to connectdatadef.io/mcp
  • MCP docsdatadef.io/agentsthe vendor's page ↗

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Databy use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

Compare Datadef with

Pick up to two.

All 10 alternatives to Datadef →

All Data tools →

Not it? Say what you need

beta

Three tools from the Atlas for the job you describe, each with what fits and what does not.

From people who use itnot part of the reading

No notes yet. What do you use Datadef for?

Sign in to leave a note
Questions this page answers
  • What is Datadef?

    Generates editable cloud architecture and ER diagrams from plain-English descriptions, SQL schemas, Terraform or repositories. It is listed in the Atlas under Data.

  • Who is Datadef for?

    Data engineers, consultants and teams diagramming data platforms, cloud architecture and ER schemas.

  • How much does Datadef cost?

    Paid plans start at $8/mo, per Datadef's pricing page on 2026-10-17.

  • Do people use Datadef?

    Little sign of use: ≈ 617 visits/mo · estimate, 2026-10.

  • Is Datadef still maintained?

    Actively maintained: site updated 3 weeks ago.

  • Does Datadef train AI on your data?

    No, per its privacy policy (2026-10-17): “We do not opt into OpenAI model training with your data.”

  • Is Datadef safe?

    We do not audit vendors. What Datadef publishes, read 2026-10-17: on training with your data, “We do not opt into OpenAI model training with your data.”.

  • Does Datadef have a free trial?

    Yes, a 7-day free trial, per its pricing page (2026-10-17).

  • Does Datadef have a student discount?

    Yes, its pricing page names a discount for students (2026-10-17).

  • How do I cancel Datadef?

    In its own words (terms of service, 2026-10-17): “You may cancel at any time from the billing portal.”

  • Does Datadef give refunds?

    In its own words (terms of service, 2026-10-17): “Refunds are issued through Polar as merchant of record, to the payment method that was charged.”

  • What are alternatives to Datadef?

    In Data, by use: Genspark, Querri, rsync.ai, Reportr, Glow Reports V1, Tabloy AI.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.