Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific path `/api/v1/wire/128` 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 each request requires a single micropayment. The timeout is 300 seconds.
However, the specific functionality behind `/api/v1/wire/128` 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, agents should treat it as an opaque premium endpoint until further documentation is available.
Capabilities
Use cases
- —Programmatic access to premium API services without subscription or API key management
- —Agent-driven workflows that need on-demand, pay-as-you-go endpoint access
- —Integrating x402-compatible micropayments into automated pipelines
Fit
Best for
- —Developers or agents already using x402-compatible wallets on Base
- —Low-volume or sporadic API consumers who prefer per-call pricing over subscriptions
- —Crypto-native applications that can settle USDC payments on Base
Not for
- —Users who need detailed documentation or OpenAPI schemas before integrating
- —High-volume consumers who would benefit from bulk pricing or rate-limited plans
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/128 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Example
Request
{
"url": "https://lowpaymentfee.com/api/v1/wire/128",
"body": {},
"method": "POST",
"headers": {
"X-PAYMENT": "<x402-payment-header>",
"Content-Type": "application/json"
}
}Endpoint
Quality
The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but the specific functionality of /api/v1/wire/128 is undocumented. No OpenAPI schema, no response examples, and all doc pages returned only 'Connect wallet' with no content. The endpoint path does not appear in the provider's listed API catalog.
Warnings
- —The path /api/v1/wire/128 is not listed among the provider's documented APIs — its specific functionality is unknown.
- —All documentation pages (docs, pricing, API, README) returned only 'Connect wallet' with no usable content.
- —No OpenAPI spec, output schema, or response examples are available.
- —The endpoint's actual behavior and response format cannot be verified without making a paid request.
Citations
- —All endpoints priced at $0.02/request with no API keys, rate limits, or commitmentshttps://lowpaymentfee.com
- —x402 challenge returns maxAmountRequired of 20000 base units in USDC on Base networkhttps://lowpaymentfee.com/api/v1/wire/128
- —USDC asset contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/wire/128
- —Provider offers APIs across data & analytics, AI & ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com