x402basequality 0.35

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/policies/39

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource `/api/v1/policies/39` 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.

Payment is settled on the Base network using USDC (contract 0x8335…2913) through the x402 exact-payment scheme. The endpoint accepts POST requests and returns application/json. No API keys are required; callers simply attach an X-PAYMENT header with a valid x402 payment proof. The maximum payment required per call is 20,000 base units of USDC (6 decimals), which equals $0.02. The payment timeout is 300 seconds.

The provider's landing page lists additional endpoints for sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, validation, conversion, and more — all at the same $0.02 price point. However, the specific functionality behind `/api/v1/policies/39` (labeled "Premium API Access") is not documented in detail. No OpenAPI schema, request/response examples, or detailed docs were found in the crawl. The docs, pricing, and API pages all rendered only a "Connect wallet" prompt with no further content.

Capabilities

x402-paymentusdc-basepay-per-requestjson-apino-api-keypost-method

Use cases

  • —Accessing premium API resources without subscription or API key management
  • —Agent-driven pay-per-call workflows settled in USDC on Base
  • —Programmatic access to provider's catalog of data, AI, finance, and utility endpoints

Fit

Best for

  • —Developers wanting zero-commitment, pay-as-you-go API access
  • —AI agents that can settle x402 payments autonomously
  • —Users who prefer crypto-native micropayments over traditional billing

Not for

  • —Users needing detailed documentation or OpenAPI specs before integrating
  • —High-volume callers who would benefit from bulk pricing or subscriptions
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/policies/39 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/policies/39
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, there is no documentation of what /api/v1/policies/39 actually returns, no OpenAPI schema, no request/response examples, and the docs pages are empty. The specific functionality behind 'Premium API Access' is entirely opaque.

Warnings

  • —The exact functionality of /api/v1/policies/39 ('Premium API Access') is undocumented — it is unclear what data or service this endpoint provides.
  • —No OpenAPI spec, request body schema, or response schema is available.
  • —All documentation pages (docs, pricing, API, README) rendered only 'Connect wallet' with no useful content.
  • —The provider lists many endpoints but none have detailed documentation in the crawl.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 08:08:26Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/L5vBBQ
Pay-per-request premium API access on Base via x402 — $0.02/call in USDC. — Clawmart · Clawmart