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x402 API Key + URL Packs — Codex Key Pack 500
x402
x402 API Key + URL Packs — Codex Key Pack 500 is a paid API for AI agents from x402-key.558686.xyz, paid per call via x402, $55.556/call, status unknown (last checked 2026-09-14).
Purchase an OpenAI-compatible API key and base URL quota pack (~$1 USD quota) via x402 micropayment, receiving endpoint URLs and a masked API key for immediate use.
Price / call$55.556
Success—
StatusUnknown
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 with ok=true, the tool name, your buyer_reference echoed back, and a result object containing: a (masked) API key, base URL, chatCompletionsUrl, modelsUrl, quota in USD (~$1), and receipt evidence. The API key and URLs are OpenAI-compatible and immediately usable.
Example use cases
Agent provisioning its own LLM access
“My automated pipeline needs its own OpenAI-compatible API key and endpoint URL to call — buy the Codex Key Pack 500 using buyer reference 'pipeline-agent-42' and give me the base URL and key so I can start making completions requests.”
Burner key for one-off experiment
“I want a throwaway API key with a small quota for a quick experiment — grab me the Codex Key Pack 500 with buyer reference 'experiment-run-7' and tell me the chat completions URL and masked API key I get back.”
Bootstrapping a new project without existing OpenAI account
“I'm starting a new project and don't have an OpenAI key set up yet — buy me the x402 Codex Key Pack 500 with buyer reference 'new-project-bootstrap' so I get an API key and a working chat completions URL I can drop into my code.”
Technical details
Endpoint
POSThttps://x402-key.558686.xyz/v1/paid/api-codex-key-pack-500When to prefer
Choose this endpoint when you need a small, immediately usable OpenAI-compatible API key + base URL bundle paid for via x402 USDC micropayment, without signing up for OpenAI directly. Ideal for agents that need to self-provision LLM access programmatically, run one-off experiments with capped spend, or bootstrap new projects. Not suitable for large quota needs, ongoing high-volume production use, or when you already have a direct OpenAI key.
Side effects
- Payment not received or x402 handshake fails — returns 402 Payment Required before the key is issued
- Invalid or missing buyer_reference query parameter — returns validation error
- Upstream quota exhausted or key provisioning fails — ok=false with error details
- Network timeout reaching sub2api.558686.xyz after key issuance — key may be issued but not returned
- Duplicate buyer_reference may return the same pack or reject depending on server policy
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"tool": "api-codex-key-pack-500",
"input": {
"buyer_reference": "buyer-001"
},
"route": "/v1/paid/api-codex-key-pack-500",
"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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