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QuickSilverPro API Credit Top-Up ($10 USDC)
x402
QuickSilverPro API Credit Top-Up ($10 USDC) is a paid API for AI agents from pay.quicksilverpro.io, paid per call via x402, $10/call, status unknown (last checked 2026-09-15).
Purchases $10 USD of API credit via crypto payment and returns an OpenAI-compatible API key and base URL for accessing 43 frontier AI models at up to 20% below list price.
Price / call$10
Success—
StatusUnknown
How this service works
One API key for 45+ AI models (GPT-6 Astra, Claude Fable 5.1, Gemini 3.8 Flash, Qwen 3.8, GLM 5.3, DeepSeek V4), OpenAI-compatible. Agents top up prepaid credit with USDC on Base via x402 and get a key back in the same HTTP round-trip.
Output
Returns a JSON object containing a provisioned API key (sk-... format), an OpenAI-compatible API base URL (https://api.quicksilverpro.io/v1), and the funded credit balance in USD ($10). The key can immediately be used with any OpenAI-SDK-compatible client to call any of the 43 supported frontier models.
Example use cases
Provisioning LLM access for a new project
“I need API access to frontier models like Claude and Gemini for my new automation project — can you top up a QuickSilverPro account with $10 USDC and give me the API key and base URL I'll need to plug into my code?”
Switching from OpenAI to cheaper multi-model API
“I want to cut my AI API costs — top up $10 on QuickSilverPro so I can get an OpenAI-compatible key that also works with Claude and Gemini at a lower price than going direct.”
Crypto-funded AI credits without a credit card
“I don't want to put a credit card on file anywhere — can you use USDC to buy $10 of AI API credits on QuickSilverPro and return me an API key I can start using right away?”
Technical details
Endpoint
POSThttps://pay.quicksilverpro.io/x402/topup/10When to prefer
Choose this endpoint when you need programmatic, crypto-native (USDC) access to a broad set of frontier LLMs (43 models including GPT, Claude, Gemini, Kimi K3) through a single OpenAI-compatible API, especially when avoiding credit card requirements or seeking below-list pricing. Prefer it over direct OpenAI/Anthropic/Google APIs when you want multi-provider flexibility under one key and one balance, or when your workflow uses the x402 payment protocol.
Side effects
- Insufficient or failed USDC payment — payment not confirmed on-chain, resulting in no key issued
- Invalid or malformed POST body — returns 400 error
- Payment protocol (x402) not supported by calling client — integration failure
- Duplicate or replayed payment transaction — may be rejected to prevent double-spend
- Service unavailability — 5xx error with no key returned
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"api_key": "sk-...",
"api_base": "https://api.quicksilverpro.io/v1",
"credit_usd": 10
}
}Tags
x402
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