x402basequality 0.30

Pay-per-call API platform on Base (USDC) covering data, AI, finance, and utility endpoints at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/transfers/33

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a broad catalog of pay-per-request endpoints settled in USDC on the Base network. The specific endpoint at `/api/v1/transfers/33` is listed as "Premium API Access" and costs up to $0.02 per call (maxAmountRequired of 20,000 base units of USDC, which is 6-decimal, equaling $0.02). Payment is handled via the x402 protocol — no API keys, accounts, or rate limits are required; callers simply attach an X-PAYMENT header with a valid payment proof.

The broader platform advertises four endpoint 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 listed endpoints share the same $0.02/request pricing.

The specific functionality behind `/api/v1/transfers/33` 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 further documentation it is unclear what data or service this particular endpoint returns. The endpoint is confirmed live — it returns a proper 402 x402 challenge when probed via POST.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keypost-endpoint

Use cases

  • —Accessing premium API data with per-call USDC micropayments on Base
  • —Agent-driven workflows that need keyless, pay-as-you-go API access
  • —Programmatic access to data/analytics, AI inference, finance, or utility endpoints without subscription commitments

Fit

Best for

  • —Developers wanting zero-commitment, pay-per-use API access
  • —AI agents that can settle x402 payments autonomously on Base
  • —Users who prefer crypto-native micropayments over traditional API key subscriptions

Not for

  • —Users who need detailed API documentation or OpenAPI schemas before integrating
  • —High-volume consumers who would benefit from bulk/subscription pricing

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transfers/33 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transfers/33
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and the specific functionality of /api/v1/transfers/33 is entirely undescribed. The docs, pricing, API, and README pages all returned only 'Connect wallet' with no useful content.

Warnings

  • —The specific functionality of /api/v1/transfers/33 ('Premium API Access') is completely undocumented — it is unclear what data or service it provides.
  • —No OpenAPI spec, request schema, or response schema is available.
  • —All documentation pages (docs, api, pricing, README) returned only a 'Connect wallet' prompt with no technical content.
  • —The broad catalog of endpoints listed on the homepage cannot be verified as functional from the crawl data alone.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:05:45Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/4TnVWs
Pay-per-call API platform on Base (USDC) covering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart