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/7` is one of many endpoints offered by the provider, which hosts a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.
The endpoint accepts HTTP POST requests and is gated by an x402 payment challenge. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum amount of 20,000 base units (i.e., $0.02 given USDC's 6 decimals). There are no API keys, no rate limits, and no subscription commitments — callers simply attach an X-PAYMENT header with a valid x402 payment proof to access the resource.
The provider's landing page lists 16 endpoints across four categories (analytics/metrics, AI inference, finance/crypto, and utility services), all at the same $0.02 price point. However, the specific functionality behind `/api/v1/wire/7` is not documented beyond the generic label "Premium API Access." No OpenAPI schema, request/response examples, or detailed documentation were found in the crawl. The docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive content.
Capabilities
Use cases
- —Accessing premium API functionality with per-request USDC micropayments on Base
- —Agent-driven workflows that need keyless, pay-as-you-go API access
- —Integrating x402-compatible endpoints into automated pipelines without subscription overhead
Fit
Best for
- —Developers or agents already set up with x402 payment flows on Base
- —Use cases requiring low-cost, no-commitment API calls
- —Crypto-native applications that prefer on-chain settlement over traditional billing
Not for
- —Users who need detailed API documentation or guaranteed SLAs before integrating
- —Applications requiring high-throughput batch processing where per-call fees add up
- —Anyone without a Base-compatible USDC wallet or x402 client
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/7 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>" \
-d '{}'Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming pricing and payment details. However, there is no documentation, no OpenAPI schema, no request/response examples, and the specific functionality of /api/v1/wire/7 is entirely undescribed beyond a generic label. The docs pages are empty stubs.
Warnings
- —The specific functionality of /api/v1/wire/7 is not documented — 'Premium API Access' is a generic label with no details on what data or service is returned.
- —All documentation pages (docs, API, pricing, README) returned only 'Connect wallet' with no substantive content.
- —No OpenAPI schema, request body schema, or response schema is available.
- —The provider lists 16 endpoints on the landing page but /api/v1/wire/7 does not appear among them, making its purpose unclear.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/wire/7
- —All listed endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant access on the Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/wire/7