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x402 API Key + URL Pack (Codex 100 — $11 USDC)
x402
x402 API Key + URL Pack (Codex 100 — $11 USDC) is a paid API for AI agents from x402-key.558686.xyz, paid per call via x402, $11.1112/call, status down (last checked 2026-09-15).
Purchases a $1 USD quota OpenAI-compatible API key pack via x402 micropayment, returning a base URL, API key, and endpoint URLs for GPT-compatible LLM access.
Price / call$11.1112
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
A JSON object containing: ok (boolean success flag), apiKey (the provisioned secret key), apiKeyMasked (safe display version), baseUrl (OpenAI-compatible base URL), chatCompletionsUrl (direct chat completions endpoint), modelsUrl (models listing endpoint), quotaUsd (integer quota in USD), and receiptEvidence (payment receipt data).
Example use cases
Spin up LLM access for an agent
“I'm building an autonomous agent and need an OpenAI-compatible API key with a small quota right now — buy me a Codex 100 key pack using buyer reference 'agent-fleet-42' and send back the base URL and key.”
Crypto-native LLM key provisioning
“I want to pay with USDC and get an API key for a GPT-compatible chat completions endpoint — use buyer reference 'crypto-dev-7' to purchase the Codex 100 pack and give me the chatCompletionsUrl and API key.”
Temporary key for a one-off LLM task
“I just need a temporary API key with a $1 quota for a quick GPT-compatible job — grab me the Codex 100 key pack with buyer reference 'temp-task-99' and return the full base URL and masked key.”
Technical details
Endpoint
POSThttps://x402-key.558686.xyz/v1/paid/sub2api-codex-key-pack-100When to prefer
Choose this endpoint when you need to programmatically purchase a small, ready-to-use OpenAI-compatible API key and base URL in a single x402 micropayment flow, especially in crypto-native or agent-driven workflows where human key management is impractical. Prefer this over manual key provisioning when you need deterministic, receipt-backed credential delivery at low cost ($11.11 USDC for the pack). Best suited for agent pipelines that self-fund LLM access on demand.
Side effects
- Payment not completed or x402 payment header missing — returns 402 Payment Required
- Invalid or missing buyer_reference query parameter — request rejected
- Quota pack already exhausted or upstream key disallows GPT-5.6 Soul — limited model availability
- Network error or upstream proxy unavailability at sub2api.558686.xyz — service unavailable
- Payment amount mismatch — wrong USDC amount sent, payment rejected
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"tool": "api-codex-key-pack-100",
"input": {
"buyer_reference": "buyer-001"
},
"route": "/v1/paid/sub2api-codex-key-pack-100",
"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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