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/payments/264

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 at `/api/v1/payments/264` is labeled "Premium API Access" and accepts POST requests. The platform advertises a flat $0.02 per request across all its endpoints, with no API keys, no rate limits, and instant access.

The site lists four categories of APIs: 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 (geocoding, validation, conversion, generation). However, this specific endpoint (`/api/v1/payments/264`) is listed as "Premium API Access" and does not clearly map to any of those categories. The x402 challenge confirms a maxAmountRequired of 20000 base units of USDC (6 decimals), which equals $0.02.

Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what this particular endpoint actually returns. The endpoint is live and responds with a valid x402 challenge, but without documentation it is unclear what data or functionality "Premium API Access" provides.

Capabilities

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

Use cases

  • —Accessing premium API data with per-request USDC micropayments
  • —Agent-driven API consumption without pre-registration or API keys
  • —Programmatic pay-as-you-go access to unspecified premium content

Fit

Best for

  • —Developers wanting zero-signup API access via crypto micropayments
  • —AI agents that can settle x402 payments on Base
  • —Users who prefer pay-per-call over subscription models

Not for

  • —Users who need detailed API documentation before integrating
  • —Anyone requiring fiat-only payment methods
  • —High-volume consumers who need bulk pricing or rate guarantees

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/payments/264 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/payments/264
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live with a valid x402 challenge, but there is no documentation, no OpenAPI schema, no request/response examples, and no clear description of what 'Premium API Access' actually returns. The docs pages are empty. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content
  • —No OpenAPI or schema describing request parameters or response format
  • —The purpose of '/api/v1/payments/264' ('Premium API Access') is not explained anywhere on the site
  • —Cannot verify what data or functionality this endpoint actually provides

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 06:50:16Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/Wvgq7x
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart