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Free tools

Free tools for better AI datasets.

Quick answer

Validate samples, prepare formats, document requirements, and source the data your team needs.

Formats

JSONL validator

Find the exact lines that break your JSONL file and export only valid records.

Formats

CSV to JSONL converter

Map columns, choose types explicitly and convert CSV to JSON Lines.

Formats

JSON to JSONL converter

Turn a JSON array — or an array you pick inside an object — into JSON Lines.

Formats

Chat dataset validator

Check a messages[] chat dataset for structure, roles, empty content and assistant turns.

Quality

Dataset quality checker

Measure completeness, exact duplicates and text length in a CSV, JSON or JSONL sample.

Procurement

Dataset requirements / RFP builder

Write a clear dataset requirements brief and download it as Markdown or JSON.

Formats

JSONL viewer and explorer

Browse JSONL records page by page, see every field and its types, and search what you loaded.

Formats

JSONL to CSV and Excel converter

Flatten JSON Lines into CSV with chosen columns, clear nesting rules and a spreadsheet-safe option.

Formats

JSONL to JSON converter

Wrap every JSON Lines record into one JSON array and download it.

Quality

JSON Schema validator for datasets

Check every JSONL record against your own JSON Schema and see the exact path and rule that failed.

Quality

Dataset duplicate remover

Remove exact duplicate records by whole record or chosen fields, with optional case and whitespace rules.

Quality

Train/test overlap checker

Find exact records and shared group IDs that appear in both a training and a test sample.

Quality

Train/test split tool (group-aware)

Split data into train, validation and test with a seed, keeping each conversation or source in one split.

Privacy

Privacy pattern checker

Flag emails, phone numbers, card numbers and other common sensitive details in a dataset sample.

Privacy

Password and key scanner

Find passwords, API keys, tokens and private keys left in exports, logs or tickets before you share them.

Procurement

Dataset description builder

Describe a dataset clearly — source, contents, privacy handling, allowed uses and gaps — and download it.

Procurement

Data license readiness checklist

Fourteen questions on ownership, personal details, confidential material, terms and approval before licensing data.

Procurement

Dataset fit check

Answer the questions AI buyers ask about a dataset — whether you have the data or need it — and send the brief to SourceX.

Samples are processed in your browser. File contents are not uploaded.

For business data owners

Business data inventory builder

List your systems, years and exports. Download it or ask us to review it.

Privacy rules checker

See which privacy rules are likely to come up for your records.

Call recording consent checker

Check what consent questions come up for recorded calls.

Data volume estimator

See whether your history is likely to be enough for buyers.

Data quality scorecard

Score how ready your records are for a buyer review.

Exclusive or non-exclusive?

Work out which licensing shape fits your company.

Deal terms checklist

List the terms to settle before any data moves.

Company data readiness assessment

See how ready your company's records are for a licensing review.

Data licensing readiness checklist

Check the approvals, notices and owners you'll need before licensing.

Personal details removal checker

See how much work removing personal details from your records may take.

Portfolio data opportunity assessment

Quickly screen which portfolio companies might qualify.

Which AI teams want my records?

See which kinds of AI teams usually look for records like yours.

Data request builder for AI teams

Shape a clear data request before you submit it.

Data source documentation check for AI teams

Check which source documents to ask suppliers for.

Data licensing effort check

Estimate how much of your team's time licensing may take.

What makes records more valuable?

See which factors push the value of your records up or down.

Net proceeds worksheet

Work out what a licensing offer would actually leave you after costs.

Connected systems walkthrough

See how records from your everyday tools become one prepared package.

Support record sample explorer

See what a prepared support record looks like before and after personal details are removed.

See if your company qualifies

A short company assessment. No data uploads are needed.

See if your company qualifies Talk to SourceX
See if your company qualifies