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/transactions/192

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/192` 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. The platform advertises no API keys, no rate limits, and instant access — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The broader platform offers endpoints across four 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 endpoints are priced at $0.02 per request.

The specific functionality behind `/api/v1/transactions/192` is not documented beyond the label "Premium API Access." The docs, pricing, and API pages all render only a "Connect wallet" prompt with no further detail. Without additional documentation or example responses, the exact data returned by this endpoint is unknown. The output schema indicates it accepts HTTP POST requests and is discoverable.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keyhttp-postjson-response

Use cases

  • —Accessing premium API data without traditional API key registration
  • —Making one-off API calls paid in USDC on Base
  • —Agent-driven workflows that need keyless, pay-as-you-go API access

Fit

Best for

  • —Developers who want to avoid API key management and subscriptions
  • —AI agents that can settle x402 payments autonomously
  • —Users already holding USDC on the Base network

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —Anyone without USDC on Base or an x402-compatible payment client

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/transactions/192 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/transactions/192
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid 402 challenge, but there is virtually no documentation about what data it returns. The docs, pricing, and API pages all render only 'Connect wallet' with no usable content. The endpoint path '/api/v1/transactions/192' with a numeric ID is opaque, and 'Premium API Access' is a generic label. Without example responses or schema details, this is effectively a stub listing.

Warnings

  • —No documentation available — docs, pricing, and API pages all show only 'Connect wallet'
  • —The specific functionality of /api/v1/transactions/192 is completely undocumented
  • —No response schema or example responses are available
  • —This endpoint path contains a numeric ID (192) with no explanation of what it references

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 12:23:59Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

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