# PayWeave Fal · nano-banana Generative AI Inference

> PayWeave Fal · nano-banana Generative AI Inference is a paid API for AI agents from fal.payweave.services, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-14).

Runs the fal-ai/nano-banana generative AI model via a pay-per-call API, returning image, video, or audio outputs from model-specific inputs.

## Facts

- Endpoint: POST https://fal.payweave.services/models/fal-ai/nano-banana/run
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/payweave-fal-nano-banana-generative-ai-inference-72a117ee
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Iy57pIS2glZXvlExWh4Z4

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 payweave-fal-nano-banana-generative-ai-inference-72a117ee -d '<json body>'
```

Example prompt: Use the fal nano-banana model to generate an image — pass my prompt as the input and give me back the CDN image URL it returns.

## When to prefer this

Choose this endpoint when you need sub-second generative AI inference via the fal-ai/nano-banana model specifically, paid per-call with USDC via the x402 protocol without a subscription. Prefer it over direct fal.ai API access when you want pay-as-you-go crypto billing through PayWeave's facilitator layer.

## Known failure modes

- Payment failure: insufficient USDC balance or x402 payment rejected — call returns 402 before inference runs
- Model error: fal upstream returns a non-null error string in the response body
- Invalid input: missing required 'input' field returns a 400-level validation error
- Timeout: sub-second latency expectation not met for large inputs, may return gateway timeout
- CDN URL expiry: returned image/video URLs expire after ~24 hours and become inaccessible

## How this service works

Sub-second generative AI inference — image, video, audio.

## Output

Returns a JSON object with a fal request ID, the model name, a status of 'succeeded', model-specific output (CDN image URLs with ~24h TTL for image models, or text for vision-LLM models), inference time in seconds, and the actual USD amount charged for the call. Error field is null on success.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "prompt"
   ],
   "properties": {
    "prompt": {
     "type": "string",
     "maxLength": 5000,
     "minLength": 1,
     "description": "Text prompt describing the desired image."
    },
    "output_format": {
     "enum": [
      "jpeg",
      "png"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/payweave-fal-nano-banana-generative-ai-inference-72a117ee/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from fal.payweave.services](https://www.zero.xyz/host/fal.payweave.services/llms.txt)