# x402 API Key + URL Pack (1000-unit, $1 Quota)

> x402 API Key + URL Pack (1000-unit, $1 Quota) is a paid API for AI agents from x402-key.558686.xyz, paid per call via x402, $111.112/call, status unknown (last checked 2026-10-23).

Purchases a small OpenAI-compatible API key and base URL quota pack (~$1 USD) via x402 micropayment, returning a ready-to-use API key, base URL, and chat completions endpoint.

## Facts

- Endpoint: POST https://x402-key.558686.xyz/v1/paid/api-codex-key-pack-1000?utm_source=zero.xyz
- Price: $111.112/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-api-key-url-pack-1000-unit-1-quota-2034bf3d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rounDbOWyUmFJgcGBhOC0

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 x402-api-key-url-pack-1000-unit-1-quota-2034bf3d -d '<json body>'
```

Example prompt: Buy me a small OpenAI-compatible API key pack — the 1000-unit $1 quota option — using my buyer reference 'buyer-001', so I can start making chat completions calls right away.

## When to prefer this

Use this endpoint when you need a ready-to-use OpenAI-compatible API key and base URL delivered instantly via a micropayment (x402 protocol), without setting up a subscription or sharing existing credentials. Ideal for agent workflows that need disposable or isolated LLM access, sandboxed experiments, or reselling small quota packs. Prefer alternatives if you need large quotas, direct OpenAI access without a proxy, or if you cannot execute x402 USDC payments.

## Known failure modes

- Payment not completed or x402 payment rejected — no key returned
- Invalid or missing buyer_reference query parameter — request rejected
- Upstream quota exhausted — key provisioned but immediately rate-limited
- x402 facilitator unreachable — payment cannot be processed
- Upstream OpenAI-compatible provider key pool depleted — provisioning fails
- Price mismatch ($111.112 USDC is unusually high relative to $1 quota — potential misconfiguration)

## How this service works

Buy a low-cost readiness check first, then buy a small OpenAI-compatible URL + API key quota pack through x402, including GPT-5.6 Soul access when your upstream key allows it. The readiness check returns URL, model, request-shape, and next-pack contract details without exposing a key.

## Output

Returns a JSON object containing: a masked and unmasked API key (sk-proj-... format), a base URL (https://sub2api.558686.xyz/v1), a chat completions URL, a models URL, the quota in USD (integer, ~$1), receipt evidence for the x402 payment, and metadata like the tool name and route.

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "tool": "api-codex-key-pack-1000",
  "input": {
   "buyer_reference": "buyer-001"
  },
  "route": "/v1/paid/api-codex-key-pack-1000",
  "result": {
   "apiKey": "sk-proj-...masked",
   "baseUrl": "https://sub2api.558686.xyz/v1",
   "quotaUsd": 1,
   "modelsUrl": "https://sub2api.558686.xyz/v1/models",
   "apiKeyMasked": "sk-proj-...masked",
   "receiptEvidence": {},
   "chatCompletionsUrl": "https://sub2api.558686.xyz/v1/chat/completions"
  },
  "project": "x402-key-url-tools",
  "deterministic": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-api-key-url-pack-1000-unit-1-quota-2034bf3d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-key.558686.xyz](https://www.zero.xyz/host/x402-key.558686.xyz/llms.txt)