# Combify Compute – Text-to-Image Generation (FLUX.1 schnell)

> Combify Compute – Text-to-Image Generation (FLUX.1 schnell) is a paid API for AI agents from compute.combify.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-11).

Generates a new image from a text prompt using the FLUX.1 schnell diffusion model, returning a base64-encoded JPEG for $0.02 USDC per call.

## Facts

- Endpoint: POST https://compute.combify.app/generate?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/combify-compute-text-to-image-generation-flux-1-schnell-17738001
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QXV3MuSQGvZ8P8BZUCzKe

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 combify-compute-text-to-image-generation-flux-1-schnell-17738001 -d '<json body>'
```

Example prompt: Generate an image of a misty mountain valley at sunrise with pine trees in the foreground — use 8 steps for a sharper result.

## When to prefer this

Choose this endpoint when you need to create a brand-new image from a text description using a fast, high-quality diffusion model. Use /caption (sibling endpoint) when you need to analyze or describe an existing image rather than generate one. Prefer this over general-purpose image APIs when you want reproducible outputs via seed control, fine-grained quality control via steps, and per-successful-call billing at a fixed $0.02 USDC.

## Known failure modes

- 402 Payment Required – call was made without a valid x402 payment or insufficient funds
- 400 Bad Request – prompt exceeds 2048 characters or steps is outside the 1–8 range
- 500 Server Error – model inference failure; retry recommended
- Empty or malformed base64 response if the model produces a degenerate output

## How this service works

Create new imagery from a text description (FLUX.1 schnell), fixed price $0.02 USDC. Use this when you need a new picture; use /caption to read an existing image. POST JSON body {prompt (required, max 2048 chars), steps (optional 1-8, default 4, higher is slower but sharper), seed (optional, same seed repeats the image)}. Returns base64 JPEG. Unpaid calls get 402; paid calls settle only on success.

## Output

Returns a base64-encoded JPEG image. On success the call is charged $0.02 USDC via x402. On failure (e.g. unpaid or invalid request) the server returns a 402 Payment Required before settlement, so you are only billed for successful generations.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "seed": {
   "type": "integer",
   "description": "Optional seed for reproducibility"
  },
  "steps": {
   "type": "integer",
   "description": "Diffusion steps, 1 to 8"
  },
  "prompt": {
   "type": "string",
   "description": "Image description, max 2048 chars"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/combify-compute-text-to-image-generation-flux-1-schnell-17738001/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from compute.combify.app](https://www.zero.xyz/host/compute.combify.app/llms.txt)