Pay-per-call premium API access on Base network via x402 protocol at $0.02/request in USDC.
What it does
This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is one of many endpoints offered by the platform, 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, no rate limits, and no commitments required.
The specific endpoint `/api/v1/wire/28` is labeled "Premium API Access" but its exact functionality is not documented beyond the generic description. The x402 challenge confirms it is live, accepts POST requests, and charges a maximum of 20,000 base units of USDC (0.02 USD given 6 decimals) per call. Payment is settled on-chain to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 using the USDC contract on Base (0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913).
The platform advertises instant access with no signup, leveraging the x402 HTTP payment standard. Documentation pages exist but appear gated behind a wallet connection, so detailed request/response schemas are not publicly available.
Capabilities
Use cases
- —Accessing premium API services without signup or API key management
- —Making one-off paid API calls settled in USDC on Base
- —Integrating pay-per-use endpoints into autonomous agent workflows
Fit
Best for
- —Developers wanting frictionless pay-per-call API access
- —AI agents that can settle x402 payments autonomously
- —Users who prefer crypto micropayments over subscription billing
Not for
- —Users needing detailed documentation or OpenAPI specs before integrating
- —High-volume use cases where per-request pricing may add up
- —Users without access to USDC on the Base network
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/28 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>" \
-d '{}'Endpoint
Quality
The endpoint is confirmed live via 402 challenge and pricing is clear ($0.02 USDC on Base), but there is no documentation of what the endpoint actually does, no request/response schema, and no examples. The 'Premium API Access' label is generic and uninformative.
Warnings
- —Exact functionality of /api/v1/wire/28 is undocumented — 'Premium API Access' is a generic label
- —Documentation pages are gated behind wallet connection and provide no public content
- —No OpenAPI spec or response schema available
- —Cannot verify what data or service this endpoint actually returns
Citations
- —Endpoint returns 402 with x402 challenge requiring 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/wire/28
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/wire/28