# Sub2API Codex GPT-5.5 Prepaid API Key Pack

> Sub2API Codex GPT-5.5 Prepaid API Key Pack is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.111/call, status unknown (last checked 2026-09-14).

Purchase a prepaid sub2api OpenAI-compatible API key with a custom USD quota for the Codex GPT-5.5 group, returned after x402 payment settlement.

## Facts

- Endpoint: GET https://gpt55.558686.xyz/v1/paid/sub2api-codex-key-pack-custom
- Price: $0.111/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sub2api-codex-gpt-5-5-prepaid-api-key-pack-70caad18
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Totg0NhD8DiBMJzo2g9xQ

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 sub2api-codex-gpt-5-5-prepaid-api-key-pack-70caad18
```

Example prompt: Buy me a sub2api Codex GPT-5.5 prepaid API key pack with a $5 quota — I need the full API key and base URL so I can start making OpenAI-compatible requests.

## When to prefer this

Use this endpoint when an agent or user needs a one-time, prepaid OpenAI-compatible API key for GPT-5.5 via the sub2api Codex group, especially when wanting to purchase access at a discounted rate (official price divided by 9) with a custom dollar quota between $1 and $1000 via x402 micropayment.

## Known failure modes

- quota_usd below minimum of $1 — returns validation error
- quota_usd above maximum of $1000 — returns validation error
- x402 payment not settled — key not returned, only masked example exposed
- sub2api key provisioning failure — downstream provider error
- missing required quota_usd parameter — returns 400 bad request

## How this service works

API Codex GPT-5.5 Key + URL Pack sold through quote-first x402. Buyer receives a one-time OpenAI-compatible API key plus base URL, chat completions URL, models URL, quota metadata, and receipt evidence after settlement. Quota is custom quota_usd, minimum $1 and sale price is quotaUsd * 0.111112, the official-price/9 floor for cost=official/18 and 50% gross margin. This is worth buying because it is an immediately usable API credential bundle, not a prompt file or static report. The full API key is returned only in the paid response; public assets expose only masked examples.

## Output

After x402 payment settlement, the agent receives a JSON response containing ok status, a productId, and a sub2apiCodexKeyPack object with the full API key and base URL for the sub2api Codex group, sized to the requested USD quota.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "quota_usd"
     ],
     "properties": {
      "quota_usd": {
       "type": "number",
       "maximum": 1000,
       "minimum": 1,
       "description": "Requested sub2api key quota in USD. Sale price is quota_usd * 0.111112."
      },
      "buyer_reference": {
       "type": "string",
       "maxLength": 160
      }
     },
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "ok",
      "productId",
      "apiCodexKeyPack",
      "sub2apiCodexKeyPack"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "productId": {
       "type": "string"
      },
      "secretBoundary": {
       "type": "object",
       "additionalProperties": true
      },
      "apiCodexKeyPack": {
       "type": "object",
       "additionalProperties": true
      },
      "sub2apiCodexKeyPack": {
       "type": "object",
       "additionalProperties": true
      }
     },
     "additionalProperties": true
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sub2api-codex-gpt-5-5-prepaid-api-key-pack-70caad18/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)