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/transfers/84

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/transfers/84` 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/transfers/84` 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 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

  • —Accessing premium data or services without traditional API key registration
  • —Making one-off API calls paid directly in USDC on Base
  • —Agent-driven workflows that need frictionless pay-per-use endpoints

Fit

Best for

  • —Developers who want instant API access without signup or API keys
  • —AI agents with x402-compatible wallets on Base
  • —Users comfortable paying per request in USDC

Not for

  • —Users who need detailed documentation or guaranteed SLAs before purchasing
  • —High-volume consumers who need bulk pricing or subscription plans
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transfers/84 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transfers/84
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no documentation, no request/response schema, and no explanation of what "Premium API Access" at /transfers/84 actually returns. The docs, pricing, and README pages are all empty beyond a wallet-connect prompt.

Warnings

  • —The actual functionality of /api/v1/transfers/84 is completely undocumented — 'Premium API Access' is the only description available.
  • —All documentation pages (docs, pricing, README, api) returned only 'Connect wallet' with no technical content.
  • —No OpenAPI spec, no request schema, and no response schema are available.
  • —The platform lists many endpoint categories (AI, finance, analytics, etc.) but none are documented in detail; it is unclear whether they are all functional.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:23:53Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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