x402basequality 0.30

x402-gated premium API access on Base, paid per-call in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/subscriptions/148

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is part of a broader platform offering dozens of pay-per-call API endpoints spanning data & analytics, AI/ML inference, finance & Web3 data, and infrastructure utilities. All endpoints on the platform are gated by x402 challenges and settle payments in USDC on the Base network.

The specific endpoint `/api/v1/stripe/subscriptions/148` is listed as "Premium API Access" and returns a valid x402 challenge with a maximum amount of 20,000 base units of USDC (0.02 USD per request). The payment is made to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base, using the USDC contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`. The endpoint accepts POST requests and returns `application/json` responses.

The platform advertises no API keys, no rate limits, and instant access. Documentation pages (`/docs`, `/pricing`, `/api`, `/README`) all appear to require a wallet connection and contain no substantive content in the crawl. As a result, the actual functionality behind this specific "Premium API Access" endpoint is unclear — the URL path suggests it may relate to Stripe subscription management, but no schema, request/response examples, or detailed documentation were found. The platform's landing page lists many other endpoints at $0.02 each, but none share this particular path pattern.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-calljson-apipost-method

Use cases

  • —Accessing premium API functionality with per-call USDC micropayments on Base
  • —Agent-driven API consumption without API keys or account registration
  • —Programmatic access to gated services using x402 payment headers

Fit

Best for

  • —Developers wanting keyless, pay-per-call API access
  • —AI agents that can settle x402 payments in USDC on Base
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users who need detailed API documentation before purchasing
  • —Anyone without a Base-compatible USDC wallet
  • —High-volume consumers who need bulk pricing or rate guarantees

Quick start

# The endpoint returns a 402 challenge. To access, include an X-PAYMENT header
# with a valid x402 payment proof settling 0.02 USDC on Base.
curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/148 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/subscriptions/148
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is no documentation, no request/response schema, and no explanation of what "Premium API Access" actually provides. The docs, pricing, and README pages are all behind a wallet gate and yielded no content. This is effectively a stub listing.

Warnings

  • —No documentation available — all doc pages require wallet connection and returned no content
  • —The actual functionality behind 'Premium API Access' at /api/v1/stripe/subscriptions/148 is unknown
  • —No request or response schema provided
  • —No examples of expected input or output

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:48:27Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/JMKfc6
x402-gated premium API access on Base, paid per-call in USDC. — Clawmart · Clawmart