x402basequality 0.30

x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys needed.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/claims/3

What it does

lowpaymentfee.com is a collection of x402-protocol pay-per-call API endpoints hosted on the Base network. The specific endpoint `/api/v1/claims/3` is listed as "Premium API Access" and returns a 402 challenge requesting payment in USDC (contract 0x8335…2913 on Base). The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. Payment is made via the x402 exact scheme with no API keys, rate limits, or subscriptions required.

The broader lowpaymentfee.com platform advertises 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 uniformly priced at $0.02 per request.

The `/api/v1/claims/3` endpoint itself is labeled generically as "Premium API Access" with no further documentation about what data or functionality it returns. The docs, pricing, API, and README pages on the site all render only a "Connect wallet" prompt with no substantive content. Without additional documentation or example responses, the actual payload returned by this endpoint remains unknown.

Capabilities

x402-paymentpay-per-requestusdc-settlementbase-networkno-api-keyjson-response

Use cases

  • —Programmatic access to a premium API resource with per-call USDC micropayments
  • —Agent-driven workflows that need keyless, on-demand API access settled on Base
  • —Demonstrating or testing x402 payment protocol integrations

Fit

Best for

  • —Developers experimenting with x402 pay-per-call protocols
  • —Agents that can settle USDC payments on Base L2
  • —Use cases requiring keyless, zero-commitment API access

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —Anyone without a Base-compatible USDC wallet
  • —High-volume consumers who need bulk pricing or subscriptions

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/claims/3 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/claims/3
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, there is no documentation, no OpenAPI schema, no example request/response, and the endpoint name 'Premium API Access' is completely generic — it is impossible to determine what data or functionality this endpoint actually provides. The site's docs/pricing/README pages are all blank beyond a wallet-connect prompt.

Warnings

  • —No documentation available — the endpoint's actual functionality is unknown
  • —All non-root pages (docs, pricing, README, api) render only 'Connect wallet' with no content
  • —No OpenAPI or schema describing request parameters or response format
  • —The endpoint name 'Premium API Access' is generic and uninformative

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 04:18:34Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/u6xtPE
x402-gated premium API access on Base, pay $0.02 per request in USDC — no keys needed. — Clawmart · Clawmart