# Photo Straightener — 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://straighten.yeezhan.com
Skill definition: https://straighten.yeezhan.com/skill/SKILL.md
API documentation: https://straighten.yeezhan.com/api/docs

## What this tool does
Rotate by a fine angle to level the horizon, then auto-trim the rotated corners away.

## Typical user problems
- Handheld horizons never come out level. Rotate by a fraction of a degree and the empty corners left behind are trimmed automatically — no manual crop needed.

## Parameters
- angle: number (range -45-45°), required. 校正角度. 正值顺时针，负值逆时针；超出范围自动钳制

## 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 50 MB