Pay-per-request premium API access via x402 on Base network using USDC.
What it does
This endpoint at lowpaymentfee.com provides a "Premium API Access" resource behind an x402 paywall. The site hosts a broad collection of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request and payable in USDC on the Base network with no API keys, rate limits, or commitments required.
The specific endpoint `/api/v1/generate/resource/101` is listed under the site's umbrella but its exact functionality is not documented in the crawled material. The x402 challenge confirms it is live, accepts POST requests, and requires payment of up to 20,000 units of USDC (0x8335… on Base). The site's landing page groups a "Generation" utility under Infrastructure, which may correspond to this resource, but the precise input/output schema and behavior are not specified beyond the generic x402 outputSchema stub.
Because the docs, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive content, there is very limited documentation available. Users should expect to experiment with POST requests after payment to discover the actual API contract. The $0.02 flat pricing and no-key, no-rate-limit model make it straightforward for agent-based consumption, but the lack of documented request/response schemas is a significant gap.
Capabilities
Use cases
- —Programmatic resource generation via a single POST request with USDC micropayment
- —Agent-based API consumption without pre-registration or API key management
- —Exploring x402 payment protocol integration for automated workflows
Fit
Best for
- —Developers experimenting with x402 pay-per-request protocols
- —AI agents that need keyless, on-demand API access
- —Users who want to pay per call with no subscription commitment
Not for
- —Users who need well-documented request/response schemas before integrating
- —High-volume use cases where per-request pricing may be expensive at scale
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/generate/resource/101 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Example
Request
{
"url": "https://lowpaymentfee.com/api/v1/generate/resource/101",
"body": {},
"method": "POST",
"headers": {
"X-PAYMENT": "<x402-payment-token>",
"Content-Type": "application/json"
}
}Endpoint
Quality
The x402 challenge is live and confirms the endpoint accepts POST with USDC on Base. However, there is no documentation of what this specific resource does, no request/response schema, and the docs/pricing/README pages are all empty beyond a wallet-connect prompt. The listing is effectively a stub with confirmed liveness.
Warnings
- —No documentation available for this specific endpoint — functionality must be inferred or discovered experimentally
- —Docs, pricing, and README pages all return only 'Connect wallet' with no content
- —The maxAmountRequired of 20000 USDC units needs clarification on decimal precision (likely 0.02 USDC given 6 decimals, but unconfirmed)
- —No OpenAPI spec, no input schema, and no example responses are provided by the provider
Citations
- —The endpoint returns a 402 challenge with x402Version 1, accepting USDC on Base networkhttps://lowpaymentfee.com/api/v1/generate/resource/101
- —The site lists APIs at $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/generate/resource/101
- —Docs, pricing, and README pages returned only 'Connect wallet' with no substantive contenthttps://lowpaymentfee.com/docs