Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific route `/api/v1/wire/101` is one of many endpoints offered by the provider, which spans categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are priced at $0.02 per request, paid in USDC on the Base network with no API keys, rate limits, or commitments required.
The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain using USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). The payment scheme is "exact," meaning the caller pays a fixed amount per call. The timeout is 300 seconds.
However, the specific functionality behind `/api/v1/wire/101` is not documented on the provider's site — it does not appear in the listed API catalog. The crawled docs, pricing, API, and README pages all returned only a "Connect wallet" prompt with no additional documentation or schema details. Without knowing what this particular endpoint returns or what input it expects, callers should treat it as an opaque premium endpoint until further documentation is available.
Capabilities
Use cases
- —Programmatic access to premium API services without traditional API key management
- —Agent-driven workflows that need on-demand, pay-as-you-go API calls settled in USDC
- —Integrating crypto-native payment rails into automated data or utility pipelines
Fit
Best for
- —Developers wanting zero-signup, pay-per-use API access
- —AI agents with Base USDC wallets needing on-demand endpoint calls
- —Projects that prefer crypto micropayments over subscription billing
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —High-volume use cases where $0.02/request adds up and bulk pricing is preferred
- —Developers without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/101 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>" \
-d '{}'Example
Request
{
"url": "https://lowpaymentfee.com/api/v1/wire/101",
"body": {},
"method": "POST",
"headers": {
"X-PAYMENT": "<x402-payment-token>",
"Content-Type": "application/json"
}
}Endpoint
Quality
The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, the specific functionality of /api/v1/wire/101 is undocumented — it does not appear in the provider's listed API catalog, and all doc/pricing/README pages returned only 'Connect wallet' with no content. No input/output schema, no examples, and no description of what the endpoint actually does.
Warnings
- —The endpoint /api/v1/wire/101 is not listed in the provider's public API catalog — its purpose is unknown.
- —All documentation pages (docs, pricing, API, README) returned only 'Connect wallet' with no usable content.
- —No input or output schema is available; callers cannot know what to send or what to expect back.
- —The provider site lists many endpoints but provides no detailed documentation for any of them.
Citations
- —All endpoints priced at $0.02 per request with no API keys, rate limits, or commitmentshttps://lowpaymentfee.com
- —Endpoint is live and returns a valid x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/wire/101
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/wire/101
- —Provider lists endpoints across data/analytics, AI/ML, finance/Web3, and infrastructure categorieshttps://lowpaymentfee.com