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/12

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. The specific endpoint `/api/v1/stripe/subscriptions/12` is listed separately from the site's broader catalog of data, AI, finance, and utility APIs. The x402 challenge indicates it accepts payment via the "exact" scheme on the Base network, settling in USDC (contract 0x8335…2913) to address 0x1A2B…85F3. The maximum amount required is 20,000 base units of USDC, which at 6 decimals equals $0.02 per request.

The parent site lowpaymentfee.com hosts a broader suite of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment, summarization, classification, embeddings), finance/crypto market data, and infrastructure utilities — all priced at $0.02 per request with no API keys, no rate limits, and no commitments. However, this specific endpoint's path (`/stripe/subscriptions/12`) suggests it may relate to a Stripe subscription management or proxy function rather than the general-purpose APIs listed on the homepage.

Documentation is extremely sparse: the /docs, /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what this particular endpoint returns or expects as input beyond the x402 challenge's indication that it accepts HTTP POST with JSON output. The endpoint is confirmed live (402 challenge captured successfully).

Capabilities

x402-paymentusdc-settlementbase-networkper-call-pricinghttp-postjson-response

Use cases

  • —Paying per-call for premium API access without API keys or subscriptions
  • —Programmatic access to a Stripe subscription-related endpoint via crypto micropayments
  • —Agent-driven API consumption settled in USDC on Base

Fit

Best for

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

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who want bulk pricing or subscription discounts
  • —Anyone requiring non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/12 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/subscriptions/12
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 OpenAPI schema, no request/response examples, and the endpoint's actual functionality (what it returns for a successful paid request) is unknown. The path suggests Stripe subscription management but this is unconfirmed.

Warnings

  • —No documentation available — /docs, /pricing, /api, and /README pages all return only a wallet-connect prompt
  • —No OpenAPI or input/output schema beyond the x402 challenge metadata
  • —The endpoint path '/api/v1/stripe/subscriptions/12' suggests Stripe subscription functionality but no details are provided on what data is returned or what input is expected
  • —Cannot verify what the endpoint actually does when payment is provided

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:45:15Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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