# fastapi.online Image Flip

> fastapi.online Image Flip is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Flips an image horizontally or vertically, returning the mirrored result

## Facts

- Endpoint: POST https://api.fastapi.online/image-flip
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fastapi-online-image-flip-aa47ff11
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wuL-zJ9x_XXvsomKLPJ20

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fastapi-online-image-flip-aa47ff11 -d '<json body>'
```

Example prompt: Can you flip this photo horizontally so it's mirrored left-to-right?

## When to prefer this

Choose this endpoint when you need a simple, cheap ($0.001 USDC), no-signup image flip operation accessible via crypto micropayment. Ideal for agents that need on-the-fly image orientation correction without integrating a full image editing SDK or cloud provider account. Suitable for PNG, JPEG, and WebP inputs.

## Known failure modes

- Unsupported image format returns an error
- Invalid direction value (not 'horizontal' or 'vertical') causes a 422 validation error
- File too large may time out or return a payload error
- Corrupted or malformed image binary results in processing failure
- Missing required 'file' field returns 422 Unprocessable Entity

## How this service works

Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&amp;A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding &amp; crypto utilities, date/time calculators, geo/coordinate math, math &amp; finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.

## Output

Returns the transformed image file with the specified flip applied — either a horizontal mirror (left-right reversal) or vertical mirror (top-bottom reversal) — in the same format as the input (PNG/JPEG/WebP).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "file": {
   "type": "string",
   "format": "binary",
   "description": "Image file (PNG/JPEG/WebP)"
  },
  "direction": {
   "type": "string",
   "description": "horizontal|vertical"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fastapi-online-image-flip-aa47ff11/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.fastapi.online](https://www.zero.xyz/host/api.fastapi.online/llms.txt)