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/transactions/246

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/transactions/246` 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 x402 payment header to each request.

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 uniformly priced at $0.02 per request.

Documentation is extremely sparse — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/transactions/246` endpoint actually returns. The endpoint is live and responds with a valid x402 challenge, but without documentation it is unclear what data or functionality this specific transaction endpoint provides.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keyjson-responsepost-method

Use cases

  • —Programmatic access to API services with per-request USDC micropayments
  • —Agent-driven workflows that need keyless, pay-as-you-go API access
  • —Exploring x402 protocol integration for crypto-native applications

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that can settle USDC on Base network
  • —Use cases requiring no-signup, no-API-key access

Not for

  • —Production workloads requiring documented, stable API contracts
  • —Users who need detailed request/response schemas before integrating
  • —Non-crypto users who cannot pay in USDC on Base

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transactions/246 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transactions/246
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming it accepts USDC on Base at $0.02/request. However, there is no OpenAPI schema, no documentation, no request/response examples, and no explanation of what this specific endpoint actually does. The docs pages are empty beyond a wallet-connect prompt. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
  • —No OpenAPI or JSON schema describing request parameters or response format
  • —The purpose of /api/v1/transactions/246 ('Premium API Access') is completely undocumented
  • —Cannot verify what data or functionality this endpoint provides

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 12:53:45Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

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