x402basequality 0.30

x402-gated API platform on Base offering 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/stripe/charges/54

What it does

lowpaymentfee.com is an x402-protocol API marketplace that gates access to a variety of endpoints behind per-request USDC micropayments on the Base network. 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 listed at $0.02 per request.

The specific endpoint at `/api/v1/stripe/charges/54` is labeled "Premium API Access" and returns a live x402 challenge requesting up to 20,000 base units of USDC (0x8335…) on Base, which equals $0.02. Payment is made via the x402 exact scheme to the specified payTo address. The endpoint accepts POST requests and returns application/json. No API keys or rate limits are advertised — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive 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 charge data, but this is speculative. Without documentation, the actual functionality of this endpoint remains unclear.

Capabilities

x402-paymentusdc-micropaymentbase-networkper-request-billingno-api-keyjson-responsepost-method

Use cases

  • —Accessing pay-per-call API endpoints without subscription or API key management
  • —Making micropayments for individual API requests using USDC on Base
  • —Agent-driven API consumption with x402 payment protocol

Fit

Best for

  • —Developers wanting zero-commitment, pay-as-you-go API access
  • —AI agents that can settle x402 payments autonomously
  • —Users who prefer crypto micropayments over traditional API billing

Not for

  • —Users needing detailed API documentation or guaranteed SLAs before integrating
  • —Anyone without access to USDC on the Base network
  • —High-volume consumers who would benefit from bulk pricing or subscriptions

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/54 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/charges/54
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is zero documentation on what this endpoint actually does or returns. No OpenAPI spec, no request/response examples, and all doc pages render only 'Connect wallet'. The endpoint name 'stripe/charges/54' is opaque without further context.

Warnings

  • —No documentation available — all doc/API/pricing/README pages show only 'Connect wallet' with no content
  • —No OpenAPI or schema describing request parameters or response format for this endpoint
  • —The endpoint path 'stripe/charges/54' is unexplained; actual functionality is unknown
  • —No examples of successful responses are available

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 09:36:47Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/7PTTDw
x402-gated API platform on Base offering data, AI, finance, and utility endpoints at $0.02/request. — Clawmart · Clawmart