x402basequality 0.35

Pay-per-call API platform on Base via x402 — data, AI, finance, and utility endpoints at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/354

What it does

lowpaymentfee.com is an x402-enabled API platform that offers a broad catalog of pay-per-request endpoints settled in USDC on the Base network. The specific endpoint at `/api/v1/charges/354` is listed as "Premium API Access" and accepts POST requests with payment via the x402 protocol. The 402 challenge indicates a max amount of 20,000 base units of USDC (0x8335…), which equals $0.02 per request (USDC uses 6 decimals).

The platform advertises four categories of APIs: 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 priced at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.

However, the specific endpoint probed (`/api/v1/charges/354`) does not correspond to any of the named endpoints on the landing page, and its description is simply "Premium API Access" with no further documentation about what it returns or what input it expects. The docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive content. Without documentation or schema details for this particular endpoint, its actual functionality remains unclear.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keypost-endpointjson-response

Use cases

  • —Paying per-call for data analytics and reports without subscription commitments
  • —Accessing AI inference endpoints (sentiment, summarization, classification, embeddings) via crypto micropayments
  • —Fetching real-time finance and crypto market data with USDC-settled requests
  • —Using utility services like geocoding and validation without API key management

Fit

Best for

  • —Developers who want zero-signup, pay-as-you-go API access
  • —Agents and bots that can settle payments via x402 on Base
  • —Users who prefer crypto micropayments over traditional API subscriptions

Not for

  • —Users who need detailed API documentation and schemas before integrating
  • —High-volume consumers who would benefit from bulk pricing or rate-limited tiers
  • —Developers without USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/354 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>" \
  -d '{}'

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/354
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), but there is no documentation, no input/output schema, and no explanation of what '/api/v1/charges/354' actually does. The docs, pricing, and README pages are all empty beyond a wallet-connect prompt. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all return only 'Connect wallet' with no content.
  • —The endpoint path '/api/v1/charges/354' does not match any of the named endpoints on the landing page; its actual functionality is unknown.
  • —No input or output schema is provided; callers cannot know what to send or what to expect back.
  • —No examples or error handling documentation available.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:48:10Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/kpW7gH
Pay-per-call API platform on Base via x402 — data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart