x402basequality 0.25

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/188

What it does

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

The specific endpoint `/api/v1/stripe/subscriptions/188` is listed as "Premium API Access" and returns a valid x402 challenge (HTTP 402) requesting up to 20,000 base units of USDC (0.02 USD) per call, payable to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The endpoint accepts POST requests and returns `application/json`. The x402 challenge uses the "exact" payment scheme with a 300-second timeout.

However, the actual functionality behind this endpoint is unclear. The path suggests a Stripe subscription resource, but the crawled documentation is extremely sparse — most pages (docs, api, pricing, README) render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no documentation describing what this endpoint returns or what input it expects. The platform's landing page lists many API categories at $0.02/request with claims of no API keys, no rate limits, and instant access, but none of these claims can be independently verified from the available material.

Capabilities

x402-paymentusdc-baseper-call-micropaymentjson-responsepost-method

Use cases

  • —Accessing a premium API resource with per-call USDC micropayments on Base
  • —Integrating x402-compatible agent workflows that auto-pay for API calls
  • —Testing x402 payment protocol integrations

Fit

Best for

  • —Developers experimenting with x402 micropayment-gated APIs
  • —Agents that can autonomously settle USDC payments on Base
  • —Projects needing keyless, pay-per-use API access

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —Anyone requiring non-crypto payment methods
  • —Production workloads requiring well-documented, stable APIs

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/188 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/subscriptions/188
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.25/ 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 no explanation of what the endpoint actually does. Most site pages are empty beyond a wallet-connect prompt. The listing is effectively a stub.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all render only 'Connect wallet' with no content.
  • —No OpenAPI or schema describing request parameters or response format.
  • —Actual functionality of '/api/v1/stripe/subscriptions/188' is unknown — the path suggests a Stripe subscription resource but no details are provided.
  • —Platform lists many API categories but none can be verified from crawled content.
  • —No examples of successful responses available.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 11:01:13Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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