x402basequality 0.30

x402-gated premium API access on Base, paid per-call in USDC at $0.02/request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/charges/29

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. It is one of many endpoints offered by the lowpaymentfee.com platform, which hosts a variety of API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform share a uniform pricing model of $0.02 per request, settled in USDC on the Base network.

The specific endpoint `/api/v1/stripe/charges/29` accepts POST requests and returns JSON. Its exact functionality is not documented beyond the label "Premium API Access" — the platform does not provide OpenAPI specs, detailed parameter documentation, or example responses for this particular route. The x402 challenge confirms the endpoint is live and accepts payment via the "exact" scheme on Base, with a max amount of 20,000 base units of USDC (i.e., $0.02 given USDC's 6 decimals). Payment is sent to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`, and the asset contract is the canonical Base USDC (`0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`).

The platform advertises no API keys, no rate limits, and instant access. However, documentation pages (/docs, /pricing, /api, /README) all resolve to a minimal "Connect wallet" page with no substantive content. Without input/output schema details or usage examples, callers must experiment to discover what this endpoint actually does or returns.

Capabilities

x402-paymentusdc-baseper-call-pricingjson-responsepost-method

Use cases

  • —Programmatic pay-per-call access to a premium API without API key management
  • —Agent-driven workflows that need to pay for API calls on-chain via x402
  • —Exploring x402 payment protocol integrations on the Base network

Fit

Best for

  • —Developers experimenting with x402 payment-gated APIs
  • —Agents that settle API costs in USDC on Base
  • —Use cases requiring keyless, per-request billing

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before integrating
  • —Applications requiring well-defined input/output schemas
  • —High-volume use cases where $0.02/request adds up without volume discounts

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/29 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>" \
  -d '{}'

Example

Request

{
  "url": "https://lowpaymentfee.com/api/v1/stripe/charges/29",
  "body": {},
  "method": "POST",
  "headers": {
    "X-PAYMENT": "<x402-payment-token>",
    "Content-Type": "application/json"
  }
}

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/charges/29
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, confirming pricing and payment details. However, there is no documentation, no OpenAPI schema, no example responses, and the endpoint's actual functionality beyond the label 'Premium API Access' is completely unknown. All doc pages return only 'Connect wallet' with no content.

Warnings

  • —No documentation available — /docs, /pricing, /api, and /README pages are all empty stubs showing only 'Connect wallet'.
  • —The exact functionality of /api/v1/stripe/charges/29 is undocumented; the name suggests Stripe charge-related operations but this is unconfirmed.
  • —No input or output schema is provided beyond the basic outputSchema stub in the x402 challenge.
  • —The platform lists many API categories (AI, analytics, finance, etc.) but none have visible documentation.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 09:31:43Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/4nAbCx
x402-gated premium API access on Base, paid per-call in USDC at $0.02/request. — Clawmart · Clawmart