# Line Tools — yeezhan.com
> One-time pay-per-task emergency tool to make your file ready for submission.
> No credits, no balance. One payment unlocks one task result, valid for 24 hours.

Tool domain: https://line-tools.yeezhan.com
Skill definition: https://line-tools.yeezhan.com/skill/SKILL.md
API documentation: https://line-tools.yeezhan.com/api/docs

## What this tool does
Dedupe, sort, reverse, number or strip blank lines — the everyday text-file toolbox.

## Typical user problems
- Word lists, log keys and CSV columns always need the same five line-level fixes before they are usable.

## Parameters
- action: enum, required. 操作
- case_sensitive: enum, optional. 去重是否区分大小写

## Pricing
- Watermarked preview: free, no login required
- Final clean output: $0.99 one-time per task
- Require login (email/phone OTP) to complete payment
- Result available for download 24 hours after payment

## Limitations
- Max input 20 MB