x402basequality 0.25

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/12

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/12` 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. 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/12` is not documented beyond the label "Premium API Access." The crawled docs, pricing, and README pages all returned only a "Connect wallet" prompt with no additional content. There is no OpenAPI schema, no request/response examples, and no detailed documentation available for this or any other endpoint on the platform. The endpoint is live and responds with a well-formed x402 challenge, but what it actually returns upon successful payment is unknown.

Capabilities

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

Use cases

  • —Accessing premium API data with per-request USDC micropayments on Base
  • —Agent-driven workflows that need keyless, pay-as-you-go API access
  • —Testing x402 protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that need keyless API access settled in USDC on Base
  • —Low-volume, pay-per-use API consumption without subscriptions

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —High-volume production workloads requiring well-documented schemas and error handling
  • —Users without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wire/12 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wire/12
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is zero documentation on what the endpoint actually does or returns. No OpenAPI schema, no request/response examples, and all doc pages render only a wallet-connect prompt. The listing is effectively a stub.

Warnings

  • —No documentation available — all doc/pricing/README pages return only 'Connect wallet' with no content
  • —The specific functionality of /api/v1/wire/12 ('Premium API Access') is completely undocumented
  • —No OpenAPI schema or request/response examples are provided
  • —No way to verify what data or service is returned after payment without actually paying

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:46:05Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/wU4EKx
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart