x402basequality 0.30

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/endpoint-100

What it does

lowpaymentfee.com hosts a collection of pay-per-request API endpoints accessible via the x402 payment protocol on the Base network. The specific endpoint at `/api/endpoint-100` is labeled "Premium API Access" and accepts POST requests. Payment is settled in USDC (contract 0x8335…2913 on Base) with a maximum amount of 20,000 base units, which equals $0.02 per call (USDC uses 6 decimals). No API keys or rate limits are advertised — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The broader 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 listed endpoints are priced at $0.02 per request. However, the specific endpoint probed here (`/api/endpoint-100`) does not map to any of the named endpoints on the landing page, so its exact functionality is unclear.

Documentation is extremely sparse — the /docs, /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what `/api/endpoint-100` actually returns. The x402 challenge is live and well-formed, confirming the endpoint is operational, but without documentation it is difficult to know what data or service it provides.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requesthttp-post

Use cases

  • —Agent-driven API consumption with per-call USDC micropayments
  • —Accessing data or AI inference endpoints without API key registration
  • —Programmatic pay-as-you-go API usage on Base L2

Fit

Best for

  • —Developers wanting keyless, pay-per-call API access
  • —AI agents with x402-compatible payment wallets
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users needing detailed API documentation or guaranteed SLAs
  • —Applications requiring free or high-volume bulk access at discounted rates

Quick start

curl -X POST https://lowpaymentfee.com/api/endpoint-100 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/endpoint-100
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and the specific endpoint's functionality is unknown. The docs pages are all empty wallet-connect stubs.

Warnings

  • —No documentation available — /docs, /api, /pricing, /README all return only 'Connect wallet' with no content.
  • —The endpoint path /api/endpoint-100 does not correspond to any named endpoint on the landing page; its actual functionality is unknown.
  • —No OpenAPI schema or request/response examples are provided.
  • —No information on uptime, SLAs, or data sources.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-18 23:10:00Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/cCYLb7
Pay-per-call API platform on Base network via x402 — $0.02/request in USDC. — Clawmart · Clawmart