x402basequality 0.35

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/accounts/44

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific path `/api/v1/accounts/44` is one of many endpoints offered by the provider, which hosts a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.

The endpoint is live and returns a valid x402 challenge (HTTP 402) requesting payment of up to 20,000 base units of USDC (0x8335…2913) on the Base network. Since USDC uses 6 decimals, this translates to $0.02 per call. Payment is made via the `exact` scheme to the specified payTo address, with a 300-second timeout. The response MIME type is `application/json`, and the input method is HTTP POST.

The provider advertises no API keys, no rate limits, and instant access. Documentation pages (/docs, /pricing, /README) appear to require a wallet connection and contain no substantive content when crawled without one. As a result, the actual response schema and detailed behavior of the `/api/v1/accounts/44` endpoint are unknown — the name "Premium API Access" is the only descriptor available. The broader site lists sibling endpoints for metrics, reports, sentiment analysis, summarization, classification, embeddings, price feeds, exchange rates, geocoding, and more, all at the same $0.02 price point.

Capabilities

x402-paymentusdc-basepay-per-requestjson-apihttp-post

Use cases

  • —Accessing premium data or services with per-call USDC micropayments on Base
  • —Agent-driven API consumption without API keys or subscriptions
  • —Programmatic pay-as-you-go access to a multi-category API platform

Fit

Best for

  • —Developers or agents wanting keyless, pay-per-request API access
  • —Users who prefer crypto micropayments over subscription billing
  • —Automated workflows needing low-friction API calls on Base

Not for

  • —Users who need detailed documentation or response schema guarantees before integrating
  • —High-volume consumers who would benefit from bulk pricing or rate-limited tiers
  • —Anyone unable to pay in USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/44 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/44
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documentation of request/response formats, and the specific purpose of /api/v1/accounts/44 is entirely opaque beyond the label 'Premium API Access'. Documentation pages require wallet connection and yielded no content.

Warnings

  • —The specific function of /api/v1/accounts/44 is unknown — 'Premium API Access' is the only description available.
  • —All documentation pages (/docs, /pricing, /README) returned only a 'Connect wallet' prompt with no substantive content.
  • —No request or response schema is documented; integration requires trial-and-error or wallet-gated docs.
  • —The provider lists many endpoints but none have detailed public documentation.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:36:58Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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