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/124` 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, accepting POST requests and settling payments in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base). The maxAmountRequired of 20,000 base units corresponds to $0.02 (USDC uses 6 decimals). The payment scheme is "exact," meaning a precise payment is required per call with a 300-second timeout.
However, the specific functionality of the `/api/v1/wire/124` route is unclear. The provider's landing page lists numerous endpoints across analytics, AI, finance, and utility categories, but `/api/v1/wire/124` is not explicitly listed among them. No OpenAPI schema, detailed documentation, or example request/response payloads are available — the docs, pricing, and API pages all render only a "Connect wallet" prompt. The actual input parameters and response format for this particular endpoint remain unknown.
Capabilities
Use cases
- —Programmatic access to premium API functionality with per-request USDC payments
- —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
- —Integrating x402-compatible endpoints into crypto-native applications
Fit
Best for
- —Developers wanting keyless, pay-per-use API access settled in USDC on Base
- —AI agents with x402 payment capability looking for low-cost endpoints
- —Projects needing no-commitment, no-rate-limit API calls
Not for
- —Users who need detailed API documentation or OpenAPI specs before integrating
- —Applications requiring fiat payment rails or non-crypto settlement
- —Use cases that need guaranteed SLAs or enterprise support
Quick start
# The endpoint requires an X-PAYMENT header with a valid x402 payment proof.
# Using curl (you need an x402 client to generate the payment header):
curl -X POST https://lowpaymentfee.com/api/v1/wire/124 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>"Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but the specific functionality of /api/v1/wire/124 is undocumented. No OpenAPI schema, no example requests/responses, and the docs pages are empty beyond a wallet-connect prompt. The endpoint's purpose within the provider's broader API suite is ambiguous.
Warnings
- —The specific route /api/v1/wire/124 is not listed on the provider's landing page among their documented endpoints — its exact functionality is unknown.
- —No OpenAPI schema or detailed documentation is available; docs/pricing/API pages only show a 'Connect wallet' prompt.
- —Input parameters and response format are entirely unspecified — integration requires trial and error or contacting the provider.
Citations
- —All endpoints priced at $0.02 per request with no API keys, rate limits, or minimumshttps://lowpaymentfee.com
- —Provider offers endpoints across data & analytics, AI & ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com
- —x402 challenge returns maxAmountRequired of 20000 in USDC on Base network with exact scheme and 300s timeouthttps://lowpaymentfee.com/api/v1/wire/124
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/wire/124