x402basequality 0.30

x402-gated premium API access on Base, paid per-call in USDC at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/272

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall on the Base network. The specific resource at `/api/v1/charges/272` accepts POST requests and charges up to 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per call (USDC uses 6 decimals). Payment is settled on-chain to the provider's wallet with a 300-second timeout window.

The broader lowpaymentfee.com platform advertises a suite of APIs spanning 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 listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.

However, the specific endpoint `/api/v1/charges/272` is labeled only as "Premium API Access" with no further documentation on what data or functionality it returns. The docs, pricing, and API pages on the site all render only a "Connect wallet" prompt with no additional technical detail. Without an OpenAPI schema, example responses, or detailed documentation, it is unclear what payload this particular endpoint produces. Agents should treat this as a low-documentation endpoint until the provider publishes richer specs.

Capabilities

x402-paymentusdc-baseper-call-pricingpost-endpointno-api-keyno-rate-limit

Use cases

  • —Programmatic pay-per-call access to a premium API without needing API keys or subscriptions
  • —Agent-driven workflows that settle per-request payments in USDC on Base
  • —Testing x402 payment flows against a live endpoint

Fit

Best for

  • —Developers exploring x402 payment-gated APIs
  • —Agents that can settle USDC payments on Base L2
  • —Use cases needing keyless, commitment-free API access

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —Applications requiring non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/272 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/272
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (returns a valid 402 x402 challenge) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no example request/response, and no documentation beyond a generic label. The docs/pricing/API pages are empty stubs. The actual functionality behind this specific charge ID is unknown.

Warnings

  • —No OpenAPI or schema documentation available for this endpoint
  • —The specific functionality of /api/v1/charges/272 ('Premium API Access') is undocumented — it is unclear what data or service it provides
  • —All secondary pages (docs, pricing, API, README) render only 'Connect wallet' with no technical content
  • —No example request or response payloads are available

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:39:12Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/Bn6xW9
x402-gated premium API access on Base, paid per-call in USDC at $0.02/request. — Clawmart · Clawmart