# imgnAI Katana Account Top-Up

> imgnAI Katana Account Top-Up is a paid API for AI agents from kat.imgnai.com, paid per call via x402, $1/call, status unknown (last checked 2026-09-14).

Add USDC funds to an imgnAI Katana account balance via an x402 micropayment

## Facts

- Endpoint: POST https://kat.imgnai.com/v1/x402/top-up
- Price: $1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/imgnai-katana-account-top-up-6cca9286
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Nt37McoWA9CXnstdgdgqV

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 imgnai-katana-account-top-up-6cca9286 -d '<json body>'
```

Example prompt: Top up my imgnAI Katana account with 5 USDC so I have credits to generate images.

## When to prefer this

Use this endpoint when an agent or user needs to add USDC credits to an imgnAI Katana account before making image generation API calls. This is the dedicated funding endpoint for the imgnAI platform and uses the x402 micropayment protocol, making it suitable for automated, programmatic top-ups without manual intervention.

## Known failure modes

- Insufficient USDC in wallet — payment fails with payment-related error
- Invalid or missing amount field — returns 400 or schema validation error
- x402 payment not completed or rejected — top-up does not go through
- Network or service downtime — request times out or returns 5xx

## How this service works

Pay-per-call AI gateway: Frontier/SOTA LLM, Image, and Video models - and proprietary low-cost imgnAI models. Includes GPT 5.5, Opus 4.8, GPT Image 2, Nano Banana 2, Seedance 2.0, Happy Horse, and Google Omni. Fully compatible with OpenAPI, HermesOS, and OpenClaw.

## Output

Returns the wallet address associated with the account, the amount of USDC credited in this transaction, and the updated total USDC balance after the top-up.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "amount_usdc"
 ],
 "properties": {
  "amount_usdc": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/imgnai-katana-account-top-up-6cca9286/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kat.imgnai.com](https://www.zero.xyz/host/kat.imgnai.com/llms.txt)