x402basequality 0.25

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

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

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of APIs spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all gated via the x402 protocol on the Base network and settled in USDC.

The specific endpoint `/api/v1/stripe/subscriptions/18` is listed as "Premium API Access" with a maximum cost of 20,000 base units of USDC (0.02 USD per request). The x402 challenge confirms the endpoint is live, accepts POST requests, and pays to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The asset is USDC at contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`. No API keys or rate limits are advertised; access is purely pay-per-call.

However, the actual functionality behind this specific endpoint is unclear. The path suggests it relates to Stripe subscriptions, but the crawled documentation is extremely thin — most pages only show a "Connect wallet" prompt with no further detail. There is no OpenAPI schema, no request/response examples, and no documentation explaining what data this endpoint returns or what input it expects. The platform's landing page lists many endpoints at $0.02 each but provides no deeper technical documentation for any of them.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestpost-method

Use cases

  • —Programmatic access to a premium API endpoint without requiring API keys or account registration
  • —Agent-driven workflows that need to pay per-call in USDC on Base
  • —Exploring x402-protocol-based API monetization patterns

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that can settle USDC payments on Base L2
  • —Use cases requiring keyless, pay-per-request API access

Not for

  • —Production workloads requiring well-documented, stable APIs with clear schemas
  • —Users who need to understand exact request/response formats before paying
  • —Anyone needing free or fiat-only payment options

Quick start

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

Endpoint

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

Quality

0.25/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is virtually no documentation about what this endpoint actually does, what inputs it accepts, or what it returns. No OpenAPI schema, no examples, and most doc pages are blank beyond a wallet-connect prompt. The path name 'stripe/subscriptions/18' is opaque. This is effectively a stub listing.

Warnings

  • —No documentation available — all doc/pricing/API pages only show 'Connect wallet' with no content
  • —No OpenAPI or input/output schema provided; request format is unknown
  • —The endpoint path '/api/v1/stripe/subscriptions/18' suggests Stripe subscription functionality but this is unconfirmed
  • —No examples of request or response payloads available anywhere in crawled content
  • —Platform appears to list many endpoints but none have detailed documentation

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:53:52Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/Cqqzu8
x402-gated premium API access on Base, paid per-request in USDC. — Clawmart · Clawmart