x402basequality 0.30

Pay-per-call API platform on Base network via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/wire/57

What it does

lowpaymentfee.com is a pay-per-request API platform that uses the x402 protocol to accept USDC payments on the Base network. The specific endpoint `/api/v1/wire/57` is listed as "Premium API Access" and returns a 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02) per call. The platform advertises no API keys, no rate limits, and instant access — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The broader platform offers endpoints across four categories: Data & Analytics (metrics, reports, data export, insights), AI & Machine Learning (sentiment analysis, text summarization, classification, embeddings), Finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and Infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are priced at $0.02 per request.

This particular endpoint (`/api/v1/wire/57`) does not have detailed documentation beyond the generic "Premium API Access" label. The crawled docs, pricing, and README pages all returned only a "Connect wallet" prompt with no additional content. Without an OpenAPI schema, request/response examples, or documentation describing what this specific endpoint returns, its exact functionality remains unclear. Callers should be aware that the endpoint accepts POST requests and returns `application/json`, but the input parameters and output structure are not documented.

Capabilities

x402-paymentusdc-base-networkpay-per-requestjson-apipost-method

Use cases

  • —Accessing premium API functionality with per-request USDC micropayments
  • —Integrating pay-as-you-go API calls into agent workflows without API key management
  • —Testing x402 protocol payment flows on the Base network

Fit

Best for

  • —Developers wanting keyless, 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 API documentation or OpenAPI specs before integrating
  • —High-volume callers who would benefit from bulk pricing or subscriptions
  • —Developers who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wire/57 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wire/57
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming it accepts USDC on Base at $0.02/request. However, there is no OpenAPI schema, no request/response examples, and no documentation describing what '/api/v1/wire/57' actually does beyond the generic label 'Premium API Access'. All doc pages returned only 'Connect wallet' with no content.

Warnings

  • —No documentation available — all doc/pricing/README pages return only 'Connect wallet' with no useful content
  • —The specific functionality of /api/v1/wire/57 ('Premium API Access') is completely undocumented
  • —No OpenAPI schema or input/output examples are provided
  • —No request body schema is documented; callers must guess at required parameters

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 15:07:30Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/YXXQbS
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart