Early access · validating the idea

Ask your database. Get the chart.

Self-service BI for teams without a data team. We're validating an AI agent that plugs into any database you already run, read-only, learns what every table means, asks when something is unclear, and turns plain questions into dashboards anyone can build. If enough teams want it, we'll build it.

Sits on top of
what you run
  • PostgreSQL
  • MySQL
  • SQL Server
  • Snowflake
  • BigQuery
  • Oracle
  • Databricks
  • Redshift
  • MariaDB
  • ClickHouse
  • SQLite

We're validating the idea. Enough signups and we build it, and you get first access. No spam.

◉Read-only by designDesigned to never write to your database. Not one row.
⛁Schema onlyDesigned so only schema metadata leaves your environment, never row-level data
⇄Any databasePlanned for Postgres to Snowflake: if it speaks SQL, it should work

The problem

The data is all there. Getting a chart out of it is the hard part.

Most companies already have a perfectly good database. What they don't have is the time or the people to model it, document it, and answer every “can you pull this for me?” that lands in the queue.

01

The report queue never empties

Every question waits for the one person who knows SQL. By the time the answer arrives, the decision has already been made on gut feel.

02

Classic BI needs months of setup

Semantic layers, data models, a consultant. It's a big project before anyone sees their first chart, and it goes stale as the schema changes.

03

Nobody remembers what flag_2 means

Cryptic column names, half-documented joins and duplicate tables make generic AI chat tools confidently wrong. Guessing isn't good enough for numbers you'll act on.

How it would work

From connection string to dashboard, without a data project in between.

1Connect

Plug into the database you have.

Point it at Postgres, SQL Server, Snowflake or any other database. It's designed to be strictly read-only: it never writes, and there's nothing to migrate.

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2Map

The agent learns your schema.

It reads every table and column, works out which data can answer which questions, and reverse-engineers joins from your existing reports. By design, only schema metadata leaves your environment.

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3Clarify

It asks instead of guessing.

Two columns that could both be “revenue”? A status code nobody documented? You get a short, specific question, and the answer is remembered for everyone.

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4Build

Prompt it. Drag it. Share it.

Type a question, get a chart, and drag it onto a dashboard. Anyone on the team can do it, with the SQL one click away for those who want to check it.

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Who it's for

Designed for the people who need answers, not another tool to learn.

◎

Founders & general managers

See revenue, retention and margins yourself, without waiting on a hire you haven't made yet.

◇

Operations & finance leads

Stop exporting to spreadsheets every Monday. Ask the question once and pin the answer to a live dashboard.

△

The one data person

Hand the ad-hoc requests to the agent and spend your week on the work only you can do.

□

Software & SaaS teams

Give customer success and product a safe, read-only way to explore the production replica.

FAQ

Questions, answered.

Something missing? Email whowantswhat.studio@gmail.com.

Which databases does it work with?

The goal is any database: PostgreSQL, MySQL, MariaDB, SQL Server, Oracle, SQLite, Snowflake, BigQuery, Redshift, Databricks, ClickHouse and more. If your team can query it today, the agent should be able to map it. Tell us what you run when you sign up, as it shapes what we support first.

Do I need a data team or a semantic layer first?

No. That's the point. The agent builds the map of tables, metrics and relationships itself, using your schema and the reports you already have. You only step in when it asks a clarifying question.

Could it change or delete anything in my database?

No. It's being designed to be read-only: it would never write to your database, alter a table or delete a row. You'd connect it with read-only credentials you control and can revoke at any time, and you could review the SQL behind every chart.

Would my data leave our environment?

It's designed so only schema metadata does: table names, column names, types and relationships. Row-level data would never leave your environment.

What happens when the agent isn't sure?

It asks. Ambiguous columns, overlapping tables and undocumented codes show up as short questions with suggested answers. Your answer becomes part of the shared definition, so nobody has to answer it twice.

How is this different from asking a chatbot to write SQL?

A chatbot sees one question at a time and guesses. This agent keeps a persistent, reviewed model of your data, learns joins from real reports, and turns answers into charts and dashboards you can rearrange and share.

Is it real yet? Can I see it?

Not yet, and we'd rather be upfront about that. Plainjoin is an idea we're validating. The screens on this page are a concept preview, not a working product. Waitlist signups decide whether it gets built: if enough teams want it, we build it. Early signups help shape what it does and get first access.

What will it cost?

Joining the waitlist is free and commits you to nothing. Pricing isn't set yet. If we build it, early signups get first access, and teams in the early pilot would use it free in return for honest feedback.

Early access

Want this? Tell us.

Plainjoin is an idea in validation. If enough teams want it, we'll build it. Tell us a little about yours: early signups shape what gets built and get first access.

  • Designed to be read-only: it never writes to your database
  • Designed so only schema metadata leaves your environment
  • Help decide what gets built first
  • First access, and a free early pilot if it launches

No spam. We'll only email you about whether it gets built and early access.

Suggestion box

What should it do for you?

Plainjoin isn't built yet, so this is the best time to shape it. Tell us what you'd want it to do, or what's painful about getting reports today. Every suggestion is read by a human.

  • No signup needed, email is optional
  • The most-requested ideas get built first, if it gets built

What matters most to you? optional, pick any

Anonymous unless you add your email. We won't add you to any list.