x402basequality 0.30

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/charges/18

What it does

lowpaymentfee.com is an x402-enabled API marketplace that offers a variety of 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 priced at $0.02 per request and settle payments in USDC on the Base network.

The specific endpoint at `/api/v1/stripe/charges/18` is labeled "Premium API Access" and its x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02. Payment is made via the x402 exact scheme — no API keys, subscriptions, or rate limits are required. The endpoint accepts HTTP POST requests and returns application/json.

Documentation beyond the landing page is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no additional content. There is no OpenAPI spec, no request/response schema documentation, and no examples of what this particular endpoint actually returns. The name "stripe/charges" suggests it may relate to Stripe payment or charge data, but this is unconfirmed. Prospective users should be aware that the actual functionality behind this endpoint is undocumented.

Capabilities

x402-paymentusdc-basepay-per-requesthttp-postjson-responseno-api-keyno-rate-limit

Use cases

  • —Accessing premium API data without managing API keys or subscriptions
  • —Making one-off paid API calls settled in USDC on Base
  • —Integrating pay-per-request endpoints into agent workflows

Fit

Best for

  • —Developers wanting zero-friction API access without signup
  • —AI agents that can settle x402 payments autonomously
  • —Users who prefer crypto micropayments over traditional billing

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who need bulk pricing or subscription discounts
  • —Users without access to USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/18 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/charges/18
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, confirming pricing and payment details. However, there is no documentation, no OpenAPI schema, no request/response examples, and the actual functionality of this specific endpoint ('stripe/charges/18') is unclear. The docs, pricing, and README pages are all blank beyond a wallet connect prompt.

Warnings

  • —No documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet'
  • —No OpenAPI or schema definition for request or response payloads
  • —The actual functionality of /api/v1/stripe/charges/18 ('Premium API Access') is undocumented and unclear
  • —No examples of expected input or output are provided anywhere

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 09:22:05Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/5uxPsv
Pay-per-call API platform on Base via x402 — analytics, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart