Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.
What it does
This endpoint at `/api/v1/wire/13` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are accessed via the x402 payment protocol, settling in USDC on the Base network. The platform advertises a flat $0.02 per request with no API keys, no rate limits, and instant access.
The specific `/api/v1/wire/13` endpoint is labeled "Premium API Access" but its exact functionality is not documented beyond that generic title. The x402 challenge confirms it is live, accepts POST requests, and requires payment of up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` with a 300-second timeout. The response MIME type is `application/json`.
The broader platform lists endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, token quotes, gas estimates, geocoding, validation, conversion, and generation — all at the same $0.02 price point. However, documentation pages (`/docs`, `/pricing`, `/README`) returned only a "Connect wallet" prompt with no substantive content, so detailed request/response schemas for this or any other endpoint are unavailable.
Capabilities
Use cases
- —Accessing pay-per-request API services without needing API keys or subscriptions
- —Agent-driven workflows that need on-demand API calls settled in USDC on Base
- —Exploring a multi-category API platform (AI, finance, data, utilities) with uniform pricing
Fit
Best for
- —Developers or agents wanting frictionless, keyless API access via crypto micropayments
- —Use cases requiring low-cost per-call pricing without rate limits
- —x402-compatible agents on the Base network
Not for
- —Users who need detailed API documentation or well-defined schemas before integrating
- —Production workloads requiring SLA guarantees or support contracts
- —Users without USDC on Base or an x402-compatible payment client
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wire/13 \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{}'Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but the endpoint's actual functionality is completely undocumented — 'Premium API Access' is a generic label with no schema, no examples, and no docs pages (all return only 'Connect wallet'). This is effectively a stub listing.
Warnings
- —The specific function of /api/v1/wire/13 is unknown; 'Premium API Access' is a generic label with no further documentation.
- —All documentation pages (/docs, /pricing, /README) returned only 'Connect wallet' with no substantive content.
- —No request or response schema is available for any endpoint on this platform.
- —The platform lists many endpoint categories but none have verifiable documentation or examples.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/wire/13
- —The platform advertises $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset address is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/wire/13
- —Documentation pages /docs, /pricing, /README returned only 'Connect wallet'https://lowpaymentfee.com/docs