# GPT-5.6 Luna x402 Prepaid Call Pack (100 Calls)

> GPT-5.6 Luna x402 Prepaid Call Pack (100 Calls) is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $8/call, status down (last checked 2026-10-13).

Purchase a prepaid pack of 100 GPT-5.6 Luna API call credits for $8 USDC via x402 payment, returning a token for subsequent chat requests.

## Facts

- Endpoint: GET https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.6-sol-100?utm_source=zero.xyz
- Price: $8/call
- Payment: x402
- Status: down
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gpt-5-6-luna-x402-prepaid-call-pack-100-calls-b7f9f3ab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6LF3g-qhuEVI83P7ya8cb

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-x402-prepaid-call-pack-100-calls-b7f9f3ab
```

Example prompt: Buy me a 100-call prepaid credit pack for the GPT-5.6 Luna API — I want to pay with USDC so I can batch a bunch of chat requests without paying per-call each time.

## When to prefer this

Choose this endpoint when you need to make multiple GPT-5.6 Luna chat requests and want to prepay in bulk to avoid per-call payment overhead, get an 80% discount rate, and receive a reusable token. Prefer this over single-call endpoints when your agent or application will make 10+ requests in a session. Use when you have a USDC wallet set up for x402 payments.

## Known failure modes

- Payment failure if USDC wallet balance is insufficient
- x402 payment not accepted if browser wallet or agent fallback is misconfigured
- Invalid or expired payment quote causing a 402 error
- Rate limiting or quota exhaustion on the provisioning endpoint
- Network timeout during pack provisioning

## 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 containing: a unique call pack ID, the model name (gpt-5.6-sol), price string, a prepaid token (pk_test_***), a discount rate (0.8), the price in USD (~$7.9996), total call count (100), remaining calls (100), and a product ID ('model-call-pack'). This token can be used for subsequent OpenAI-compatible API calls against the GPT-5.6 Luna model.

## 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-sol-100-call-pack",
   "model": "gpt-5.6-sol",
   "price": "$8.00",
   "title": "GPT-5.6 Soul 100 Prepaid Call Credits",
   "token": "pk_test_***",
   "discount": 0.8,
   "priceUsd": 7.9996,
   "callCount": 100,
   "remainingCalls": 100
  },
  "productId": "model-call-pack"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gpt-5-6-luna-x402-prepaid-call-pack-100-calls-b7f9f3ab/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)