HTTP 402 AI Tollbooth
一個為AI代理設計的即時HTTP 402閃電網路收費站。透過閃電網路按請求付費，販售結構化API錯誤情報。無需帳戶、無需OAuth，純粹的HTTP 402。
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[
{
"error_code": "HTTP-JSON-SYNTAX",
"description": "POST /orders with {\"qty\":} receives 400 before validation.",
"programmatic_fix": "Serialize {qty: 2} with JSON.stringify and send Content-Type: application/json. Parse the exact outgoing body locally; expect qty to be numeric 2 before retrying the request."
},
{
"error_code": "HTTP-EMPTY-204",
"description": "DELETE succeeds with 204 but response.json() rejects with unexpected end of input.",
"programmatic_fix": "Branch on response.status === 204 before parsing; return null. Fixture: new Response(null, {status:204}) has an empty text body. Do not convert a successful deletion into a retry."
},
{
"error_code": "HTTP-RATE-DELAY",
"description": "An idempotent GET receives 429 with Retry-After: 30.",
"programmatic_fix": "Parse a numeric Retry-After as seconds and schedule no earlier than 30000 ms; cap attempts and add jitter after that floor. For an HTTP date, subtract the current time and clamp at zero; do not blindly replay POST."
}
]
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