x402basequality 0.30

Pay-per-call premium API access on Base via x402 — $0.02/request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/item/47

What it does

This endpoint at `/api/v1/item/47` is part of the lowpaymentfee.com platform, which offers a collection of pay-per-request APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities. All endpoints are gated via the x402 payment protocol, settling in USDC on the Base network. The listed price is $0.02 per request (20,000 base units of USDC with 6 decimals), with no API keys, no rate limits, and no minimum commitments required.

The specific endpoint `/api/v1/item/47` is labeled "Premium API Access" but its exact functionality is not documented beyond that generic title. The site lists numerous other endpoints (metrics, reports, sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and generation), all at the same $0.02 price point. Without additional documentation or an OpenAPI spec, the precise input/output schema for this particular item endpoint is unknown.

The endpoint is live and returns a valid x402 challenge (HTTP 402) when called via POST. Payment is accepted in USDC (contract `0x8335...2913`) on Base mainnet, with a 300-second timeout. The site's docs, pricing, and API pages appear to be behind a wallet-connect gate, so no further technical documentation was retrievable from the crawl.

Capabilities

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

Use cases

  • —Accessing premium API data without traditional API key registration
  • —Making one-off paid API calls settled in USDC on Base
  • —Agent-driven programmatic access to paid endpoints without subscriptions

Fit

Best for

  • —Developers who want zero-signup, pay-as-you-go API access
  • —AI agents that can settle x402 payments autonomously
  • —Users already holding USDC on Base who want frictionless API calls

Not for

  • —Users needing detailed API documentation or OpenAPI specs before purchasing
  • —Anyone looking for free or trial-tier API access
  • —Users who cannot transact in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/item/47 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/item/47
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but the specific functionality of /api/v1/item/47 is undocumented. No OpenAPI spec, no input/output schema, and no example responses are available. The docs pages are gated behind wallet-connect and yielded no content. This is effectively a stub listing with confirmed liveness but unknown utility.

Warnings

  • —The exact functionality of /api/v1/item/47 is unknown — 'Premium API Access' is a generic label with no further documentation.
  • —All documentation pages (docs, pricing, API, README) returned only a 'Connect wallet' prompt with no usable content.
  • —No OpenAPI spec or input/output schema is available for this endpoint.
  • —The site lists many endpoints but it is unclear which are fully operational versus placeholder.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 23:48:34Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/LRTbj2
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart