# GPT-5.6 Luna 100-Call Prepaid Pack Purchase

> GPT-5.6 Luna 100-Call Prepaid Pack Purchase is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $1.6/call, status unknown (last checked 2026-10-11).

Purchase a prepaid bundle of 100 GPT-5.6 Luna API call credits for $1.60 USDC via x402 payment on Base

## Facts

- Endpoint: GET https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-luna-100?utm_source=zero.xyz
- Price: $1.6/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gpt-5-6-luna-100-call-prepaid-pack-purchase-13586010
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wGPmZhVq54Y4aJT9SELns

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 gpt-5-6-luna-100-call-prepaid-pack-purchase-13586010
```

Example prompt: Buy me a 100-call prepaid pack for GPT-5.6 Luna so I have credits ready to use — pay with USDC via my Base wallet.

## When to prefer this

Choose this endpoint when you want to pre-purchase a bulk bundle of 100 GPT-5.6 Luna API calls at a discounted rate ($0.016 per call vs pay-per-call pricing) using USDC on Base. Prefer this over per-call endpoints when running automated pipelines, demos, or agent workflows that need guaranteed quota without repeated per-request payments. The 20% discount (0.8 factor) makes this cost-effective for medium-volume use cases.

## Known failure modes

- Insufficient USDC balance in wallet — payment fails with 402 response
- x402 payment protocol not supported by client — fallback quote flow required
- Pack already purchased or token already issued — may return duplicate or conflict error
- Network congestion on Base blockchain delaying payment confirmation
- Invalid or expired browser wallet session — authentication failure

## How this service works

GPT-5.6 Luna API Base USDC and OpenAI-compatible x402 chat: one request for $0.00293, paid by browser wallet or a quote-first agent fallback.

## Output

Returns a JSON object confirming the purchase with: pack ID, model name (gpt-5.6-luna), price paid ($1.60), pack title, an API access token (pk_test_***), discount factor (0.8), exact USD price, total call count (100), and remaining calls (100) — ready to use for subsequent chat completions.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "additionalProperties": true
    },
    "queryParams": {
     "type": "object",
     "properties": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "additionalProperties": true
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "pack": {
   "id": "gpt-5.6-luna-100-call-pack",
   "model": "gpt-5.6-luna",
   "price": "$1.6",
   "title": "GPT-5.6 Luna 100 Prepaid Call Credits",
   "token": "pk_test_***",
   "discount": 0.8,
   "priceUsd": 1.59992,
   "callCount": 100,
   "remainingCalls": 100
  },
  "productId": "model-call-pack"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gpt-5-6-luna-100-call-prepaid-pack-purchase-13586010/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from gpt55.558686.xyz](https://www.zero.xyz/host/gpt55.558686.xyz/llms.txt)