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x402 API Key + URL Pack (50-unit Codex Pack)
x402
x402 API Key + URL Pack (50-unit Codex Pack) is a paid API for AI agents from x402-key.558686.xyz, paid per call via x402, $5.5556/call, status down (last checked 2026-09-15).
Purchases a small OpenAI-compatible API key and base URL quota pack (~$1 USD quota) via x402 micropayment, returning a ready-to-use API key, base URL, and endpoint URLs for chat completions and models.
Price / call$5.5556
Success—
StatusDown
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 full API key (sk-proj-... format), a base URL (https://sub2api.558686.xyz/v1), direct URLs for chat completions and models endpoints, the quota in USD, and receipt evidence. The pack label is 'api-codex-key-pack-50' and quotaUsd is 1.
Example use cases
Example prompt
“Buy me a Codex key pack with my buyer reference 'buyer-001' so I can get an OpenAI-compatible API key and base URL with about $1 of quota to use for chat completions.”
Technical details
Endpoint
POSThttps://x402-key.558686.xyz/v1/paid/api-codex-key-pack-50When to prefer
Use this endpoint when an agent or user needs to programmatically purchase a fresh OpenAI-compatible API key + base URL pack via x402 micropayment in USDC, especially for short-lived or quota-bounded LLM inference sessions. Prefer this over manual API key provisioning when automated, pay-per-pack access is desired without a subscription.
Side effects
- Payment not completed or x402 payment header missing — returns 402 Payment Required
- Invalid or missing buyer_reference query parameter — returns 400 Bad Request
- Upstream API key quota exhausted — returns 503 or similar error
- Payment amount mismatch (not $5.5556 USDC) — payment rejected
- Upstream GPT-5.6 Soul access not enabled on buyer's tier — key returned but model may be unavailable
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"tool": "api-codex-key-pack-50",
"input": {
"buyer_reference": "buyer-001"
},
"route": "/v1/paid/api-codex-key-pack-50",
"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
}
}Tags
x402
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