Python CLI Tools That
Solve Real Problems

Four focused tools for data wrangling, JSON processing, prompt engineering, and market intelligence. Open source. Install in seconds. Pro editions for power users.

The Toolkit

Each tool does one thing well. No bloat, no dependencies you don't need.

Data

CSV Cleaner

Fix messy CSV files in one command. Handles encoding issues, duplicate rows, inconsistent delimiters, and malformed fields automatically.

$ csv-cleaner fix data.csv
Cleaned 1,247 rows · Fixed 83 issues
JSON

JSONKit

Swiss Army knife for JSON. Format, validate, query, diff, flatten, and convert — all from one command. Works with pipes and stdin.

$ python jsonkit.py diff old.json new.json
~ $.email: changed · + $.role · 2 differences
AI / LLM

PromptLab

Test, compare, and version your LLM prompts from the terminal. Run A/B tests across models, track costs, and ship prompts with confidence.

$ promptlab test prompts/ --models gpt-4o,claude
Ran 24 tests · 3 regressions found
Markets

Polymarket Scanner

Find mispricings on Polymarket and other prediction markets. Surfaces arbitrage opportunities, tracks odds movement, and exports alerts.

$ polymarket-scanner scan --min-edge 5%
Found 7 opportunities · Best edge: 12.3%

Why These Tools?

Zero Config

pip install and run. No YAML files, no setup wizards. Sensible defaults that work out of the box.

Single-Purpose

Each tool solves one problem well. No feature creep, no "platform" tax. Compose them with your existing workflow.

Open Source Core

The free version is genuinely useful. Pro editions add power-user features, not paywalled basics.

CLI-First

Built for the terminal. Pipe data in, get results out. Works in scripts, CI/CD, and notebooks.

Start building with better tools

All three tools are free and open source. Pro editions are a one-time purchase.