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/122

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. It is part of a broader platform that offers dozens of pay-per-request API endpoints spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all settled on the Base network using USDC.

The specific endpoint `/api/v1/stripe/subscriptions/122` is labeled "Premium API Access" in the x402 challenge. The maximum amount required per call is 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 USD (USDC uses 6 decimals). The payment scheme is "exact" and the timeout is 300 seconds. No API keys or rate limits are advertised; access is granted purely via the x402 payment header.

Documentation on the site is extremely thin — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema beyond the x402 challenge's outputSchema stub, and no description of what this particular endpoint actually returns. The endpoint name suggests it may relate to Stripe subscription management, but this is speculative. The platform's landing page confirms the $0.02/request pricing model and lists the Base network as the settlement layer.

Capabilities

x402-paymentusdc-settlementbase-networkper-request-pricingno-api-keyhttp-post

Use cases

  • —Programmatic access to premium API functionality paid per-call with USDC on Base
  • —Agent-driven workflows that need keyless, pay-as-you-go API access
  • —Integrating x402-compatible payment flows into automated pipelines

Fit

Best for

  • —Developers or agents already holding USDC on Base who want frictionless per-call API access
  • —x402-native agent toolchains that auto-negotiate payment challenges
  • —Low-volume or bursty usage patterns where subscription pricing is wasteful

Not for

  • —Users who need detailed API documentation or response schemas before integrating
  • —High-volume consumers who would benefit from bulk/subscription pricing rather than per-call charges
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/122 \
  -H "X-PAYMENT: <x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/subscriptions/122
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a wallet-connect prompt, and the actual functionality of this specific endpoint is unclear. The listing is effectively a stub.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
  • —No OpenAPI or request/response schema provided; actual endpoint behavior is unknown
  • —Endpoint path suggests Stripe subscription management but no confirmation exists
  • —The purpose of 'Premium API Access' vs. the other $0.02 endpoints on the platform is not explained

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:49:20Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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