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01. Agent chat
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// Start here

Describe a CSV transform.

Attach a CSV or a "corrupted + cleaned" pair. The agent writes Python; the right panel runs it in your browser and — with a pair — auto-refines until output matches.

— Drop empty rows and dedupe by email— Split full_name into first and last— Convert prices from EUR strings to numeric— Or use "Learn pair" (auto-analysis + self-healing loop)
Drop CSV or Excel here · Files stay local
02. Tool workspace
Awaiting configuration
// Awaiting configuration

Your automated tool will appear here once the AI agent configures it.

Describe a CSV transform in the chat on the left. When the agent emits Python, this panel becomes a runnable in-browser tool.

CSVians AI

CSV surgery, with receipts.

CSVians AI cleans, reshapes and automates spreadsheet data from a simple chat, then audits every row so you know nothing was silently lost.

SAMPLE FILE · CONTACTS.CSV

Every change has a receipt.

3 original rows accounted for

Original file

Rownameemailamount
01Ada Leeada@example.com42
02 Sam Roy SAM@example.com$68
03Ada Leeada@example.com42

Cleaned solution

Rownameemailamount
01Ada Leeada@example.com42
02Sam Roysam@example.com68
03———

Spacing trimmed. Email case unified. Currency cleaned. One duplicate removed — nothing else lost.

01

Describe the fix

Upload a CSV and tell the agent what to clean, rename, split or calculate in plain words.

02

Run it in your browser

The agent writes Python that runs locally on your device. Your file is never sent to a server to run.

03

Check the receipts

Compare and Audit show every matched, changed, duplicated or removed row before you download.

Common questions

What is CSVians AI?

A chat-first workspace for cleaning and transforming CSV and Excel files. It turns your instructions into a reusable tool and proves what changed.

Is my data safe?

Transforms and checks run inside your browser. Only the parts of your request needed for the AI agent are sent to write the code.

How does the safety audit work?

The audit uniquely tracks matched and unmatched records, helping you review what was kept, changed, duplicated or removed.

Can I reuse a tool?

Yes. Save any working tool as a template and run it again on next month's file in one click.

New here? Read the CSV cleanup guide or browse ready-made templates.