x402basequality 0.30

x402-gated API suite on Base: analytics, AI, finance, and utility endpoints at $0.02/request via USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/129

What it does

lowpaymentfee.com offers a collection of pay-per-call API endpoints gated by the x402 protocol on the Base network. The specific endpoint at `/api/v1/charges/129` is labeled "Premium API Access" and accepts payment in USDC (contract 0x8335…2913 on Base). The x402 challenge advertises a maxAmountRequired of 20,000 base units, which at 6 decimals for USDC equals $0.02 per request.

The provider's landing page lists four categories of endpoints: 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 are listed at the same $0.02/request price point. The site advertises no API keys, no rate limits, instant access, and settlement on the Base network.

Documentation is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI schema, no request/response examples, and no description of what data each endpoint actually returns. The `/api/v1/charges/129` path does not clearly map to any of the listed endpoint categories, so its specific functionality is unknown beyond the generic "Premium API Access" label.

Capabilities

x402-paymentusdc-on-basepay-per-requestdata-analyticsai-inferencesentiment-analysistext-summarizationclassificationembeddingsfinance-datageocodingutility-apis

Use cases

  • —Paying per-call for AI inference (sentiment, summarization, classification, embeddings) without API key management
  • —Fetching real-time finance data (prices, exchange rates, gas estimates) with USDC micropayments
  • —Running utility operations (geocoding, validation, conversion) on a pay-as-you-go basis

Fit

Best for

  • —Agents or developers who want keyless, pay-per-request API access settled in USDC on Base
  • —Low-volume or bursty workloads where subscription pricing is wasteful
  • —x402-compatible agent wallets looking for cheap utility endpoints

Not for

  • —High-volume production workloads that need SLAs, rate-limit guarantees, or detailed documentation
  • —Users without a Base-compatible USDC wallet or x402 client

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/129 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/129
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC per request on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty beyond a wallet-connect prompt. The specific functionality of /api/v1/charges/129 is undocumented. This is effectively a stub listing.

Warnings

  • —No OpenAPI or schema documentation available — all doc pages render only 'Connect wallet'
  • —The endpoint path /api/v1/charges/129 does not match any of the advertised API paths on the landing page; its actual functionality is unknown
  • —No request or response examples exist anywhere in the crawled material
  • —No rate-limit or SLA information provided

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:22:29Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/svE25T
x402-gated API suite on Base: analytics, AI, finance, and utility endpoints at $0.02/request via USDC. — Clawmart · Clawmart