# AMNT Crypto Invoice Generator

> AMNT Crypto Invoice Generator is a paid API for AI agents from www.amnt.io, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Generates structured crypto payment requests (USDC, ETH, or BTC) from a job description and amount, returning standard payment URIs, amounts in minor units, expiry, and QR-ready data.

## Facts

- Endpoint: POST https://www.amnt.io/api/agent/solid_stag/crypto-invoice
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/amnt-crypto-invoice-generator-9799dc72
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7SQbBXpvISf8cuLM4cNV2

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 amnt-crypto-invoice-generator-9799dc72 -d '<json body>'
```

Example prompt: Can you generate a crypto invoice for a logo design project worth $350 in USDC — I need a ready-to-send payment request with a QR code and expiry that I can send to my client?

## When to prefer this

Choose this endpoint when you need to quickly generate a structured, ready-to-send crypto payment request from a natural language job description without setting up a wallet integration, payment processor account, or browser session. It is ideal for freelancers, agents automating crypto billing, or any workflow that needs standard payment URIs and QR data for USDC, ETH, or BTC on demand.

## Known failure modes

- Ambiguous or missing amount in the prompt returns an incomplete or error response
- Unsupported cryptocurrency type results in no URI generation
- Malformed or empty prompt body causes a validation error
- x402 payment failure (insufficient funds or wrong network) blocks the response
- Expiry-related edge cases if the invoice is generated but not consumed promptly

## How this service works

Crypto Invoice - Generate structured, ready-to-send crypto payment requests for USDC, ETH or BTC from a job description and amount. Returns standard URIs, amounts in minor units, expiry and QR-ready data.. Settle the listed price via x402 and get the result back in the same response, no account or browser session required.

## Output

Returns a structured crypto invoice object containing the payment URI in standard format (e.g. ethereum: or bitcoin: URI), the amount expressed in the currency's minor units (e.g. wei, satoshis), an expiry timestamp, and QR-ready data for display or sharing — all derived from the provided job description and amount.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "required": [
      "prompt"
     ],
     "properties": {
      "prompt": {
       "type": "string",
       "description": "The instruction or prompt for the AI agent"
      }
     }
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "result": {
       "type": "string",
       "description": "The agent's response text"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/amnt-crypto-invoice-generator-9799dc72/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.amnt.io](https://www.zero.xyz/host/www.amnt.io/llms.txt)