# GPT-5.5 100-Call Prepaid Pack Purchase

> GPT-5.5 100-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 2026-10-13).

Purchase a prepaid pack of 100 GPT-5.5 API call credits for $1.60 USDC via x402 payment on Base

## Facts

- Endpoint: GET https://gpt55.558686.xyz/v1/paid/call-packs/gpt-5.5-100?utm_source=zero.xyz
- Price: $1.6/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gpt-5-5-100-call-prepaid-pack-purchase-ea470cfb
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_LU8lGEagKBo0rU7oCnbbp

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-5-5-100-call-prepaid-pack-purchase-ea470cfb
```

Example prompt: Buy me the 100-call prepaid pack for GPT-5.5 so I have credits ready to use — pay $1.60 USDC from my Base wallet via x402 and give me the token.

## When to prefer this

Choose this endpoint when you need to bulk-purchase 100 prepaid GPT-5.5 API call credits at a discounted rate ($1.60 USDC for 100 calls, ~$0.016/call) via x402 USDC payment on Base, rather than paying per individual call. Prefer this over per-call endpoints when running pipelines, agent workflows, or prototypes that will make many sequential requests and want lower per-call cost and a reusable token.

## Known failure modes

- Payment not authorized or insufficient USDC balance — x402 payment fails and no pack is issued
- Invalid or malformed request path — returns error if pack ID not found
- Rate limiting or quota exceeded on the gateway — request rejected
- Network or upstream gateway timeout — no pack created
- x402 facilitator unreachable — payment flow cannot complete

## 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 ('gpt-5.5-100-call-pack'), model name ('gpt-5.5'), price, title ('GPT-5.5 100 Prepaid Call Credits'), a prepaid token (pk_test_***), discount factor (0.8), exact USD price (~$1.59992), call count (100), remaining calls (100), and product ID ('model-call-pack').

## 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-5.5-100-call-pack",
   "model": "gpt-5.5",
   "price": "$1.60",
   "title": "GPT-5.5 100 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-5-5-100-call-prepaid-pack-purchase-ea470cfb/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)