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/89

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 payment wall. It is part of a broader platform that offers multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities — all payable per-request via the x402 protocol on the Base network using USDC.

The specific endpoint `/api/v1/stripe/subscriptions/89` is listed as "Premium API Access" and requires a POST request with an x402 payment header. The challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per call (USDC uses 6 decimals). The platform advertises no API keys, no rate limits, and instant access — payment is the only authentication mechanism.

Documentation on the site is extremely thin. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of what the "Premium API Access" endpoint actually returns or what input it expects beyond a POST method. The endpoint is confirmed live (returns a valid 402 challenge), but the lack of documentation makes it difficult to determine the actual functionality behind this particular subscription-style path.

Capabilities

x402-paymentusdc-baseper-request-billingpost-methodno-api-key

Use cases

  • —Accessing premium API functionality with per-request USDC micropayments on Base
  • —Agent-driven API consumption without pre-registration or API keys
  • —Programmatic access to subscription-gated resources via x402 protocol

Fit

Best for

  • —Developers wanting key-less, pay-per-use API access
  • —AI agents that can settle x402 payments autonomously
  • —Users already holding USDC on Base who want frictionless API calls

Not for

  • —Users needing detailed API documentation or response schemas before purchasing
  • —Anyone without USDC on the Base network
  • —Production use cases requiring SLA guarantees or support

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/89 \
  -H "X-PAYMENT: <x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/subscriptions/89
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge, but there is virtually no documentation: no OpenAPI spec, no request/response examples, no description of what the endpoint actually does beyond the label 'Premium API Access'. The docs pages are empty. This is effectively a stub listing.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet' with no content.
  • —The endpoint path '/api/v1/stripe/subscriptions/89' suggests a subscription model but no details on what is subscribed to or what data is returned.
  • —No OpenAPI schema or response examples are available; actual functionality is unknown.
  • —No robots.txt or agents.txt present on the origin.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:08:00Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/pjmfFC