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/143

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/143` is listed as "Premium API Access" and returns a standard x402 402 challenge requesting up to 20,000 base units of USDC (i.e., $0.02) per call. No API keys or rate limits are required; callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The broader platform advertises multiple API categories including 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.

However, the specific functionality behind `/api/v1/wire/143` is not documented beyond the label "Premium API Access." The crawled docs, pricing, API, and README pages all returned only a "Connect wallet" prompt with no additional technical documentation, schemas, or example payloads. Without paying and calling the endpoint, the actual response format and data returned remain unknown.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keyhttp-post

Use cases

  • —Programmatic access to a premium API endpoint with per-call USDC micropayments
  • —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
  • —Testing x402 protocol integrations against a live endpoint

Fit

Best for

  • —Developers or agents wanting frictionless pay-per-call access without API key management
  • —x402-compatible agents that can settle USDC on Base
  • —Low-volume or bursty workloads where flat $0.02/request pricing is attractive

Not for

  • —Users who need detailed documentation or guaranteed SLAs before integrating
  • —High-volume bulk consumers who need volume discounts or subscription pricing
  • —Anyone unable to transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wire/143 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_proof>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wire/143
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming pricing and payment details. However, the actual functionality behind /api/v1/wire/143 is completely undocumented — no input schema, no output schema, no examples, and all documentation pages return only a wallet-connect prompt. This is effectively a stub listing.

Warnings

  • —The specific functionality of /api/v1/wire/143 ('Premium API Access') is not documented anywhere in the crawled material.
  • —All documentation pages (/docs, /api, /pricing, /README) returned only 'Connect wallet' with no usable content.
  • —No input or output schema is available; callers cannot know what to send or what to expect back.
  • —The platform lists many API categories (AI, finance, data, etc.) but none are documented beyond endpoint names and prices.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:49:30Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/Asa6Gm
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart