x402basequality 0.35

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/158

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. The endpoint is located at `/api/v1/stripe/subscriptions/158` and accepts POST requests. Payment is settled on the Base network using USDC (contract 0x8335…2913) via the x402 "exact" scheme.

The x402 challenge advertises a maxAmountRequired of 20,000 base units. Since USDC uses 6 decimals, this converts to $0.02 per request, consistent with the site's stated pricing of $0.02/request across all its endpoints. The provider advertises no API keys, no rate limits, and instant access.

The broader lowpaymentfee.com platform offers multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. However, this specific endpoint (`/api/v1/stripe/subscriptions/158`) is labeled "Premium API Access" without further documentation on what data or functionality it returns. The docs, pricing, API, and README pages all render only a "Connect wallet" prompt, providing no additional technical detail. Without request/response schema documentation, the actual behavior of this endpoint remains unclear.

Capabilities

x402-paymentusdc-settlementbase-networkper-request-billingpost-method

Use cases

  • —Programmatic access to a premium API endpoint with per-request USDC micropayments
  • —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
  • —Testing x402 payment flows against a live endpoint

Fit

Best for

  • —Developers experimenting with x402 protocol payments
  • —Agents that can settle USDC on Base for per-call API access
  • —Use cases requiring no API key or subscription commitment

Not for

  • —Users needing detailed API documentation or guaranteed SLAs
  • —Applications requiring known, well-documented response schemas
  • —Non-crypto payment workflows

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/subscriptions/158
# Returns 402 with x402 challenge; attach X-PAYMENT header with valid USDC payment on Base to access.

Example

Response

{
  "error": "X-PAYMENT header is required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3",
      "scheme": "exact",
      "network": "base",
      "mimeType": "application/json",
      "resource": "https://lowpaymentfee.com/api/v1/stripe/subscriptions/158",
      "description": "Premium API Access",
      "maxAmountRequired": "20000",
      "maxTimeoutSeconds": 300
    }
  ],
  "x402Version": 1
}

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/subscriptions/158
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation on what the endpoint actually does, no request/response schema, and the docs/pricing/README pages are all empty beyond a wallet connect prompt. The endpoint path ('stripe/subscriptions/158') is opaque and unexplained.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all show only 'Connect wallet'
  • —The endpoint path '/api/v1/stripe/subscriptions/158' is unexplained; actual functionality is unknown
  • —No request body schema or response schema documented
  • —No OpenAPI spec or ai-plugin manifest found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 10:48:27Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

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