x402basequality 0.30

x402-gated premium API endpoint on Base, paid per-call in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/charges/9

What it does

This endpoint at lowpaymentfee.com is one of many x402-protocol-gated API services offered by the provider. The specific resource `/api/v1/stripe/charges/9` is labeled "Premium API Access" and accepts POST requests, settling payments in USDC on the Base network. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (6 decimals), which equals $0.02 per request.

The broader lowpaymentfee.com platform offers a catalog of pay-per-call endpoints spanning data & analytics (metrics, reports, data export, insights), AI & machine learning (sentiment analysis, text summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.

However, the specific functionality behind this particular endpoint (`/api/v1/stripe/charges/9`) is unclear. The path suggests it may relate to Stripe charge operations, but no documentation, request schema, or response schema is available. The docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive content. Without knowing what this endpoint actually does or what POST body it expects, callers should proceed cautiously.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-callno-api-keypost-endpoint

Use cases

  • —Programmatic access to a premium API resource gated by x402 micropayments
  • —Agent-driven workflows that need keyless, pay-as-you-go API access on Base
  • —Testing x402 protocol integrations with a low-cost endpoint

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —AI agents that can settle USDC payments on Base
  • —Use cases requiring no-signup, no-API-key access

Not for

  • —Users who need clear documentation on request/response schemas before calling
  • —Production workloads requiring well-documented, stable API contracts
  • —Anyone without a Base-compatible USDC wallet

Quick start

# The endpoint returns 402 with an x402 challenge.
# After constructing a valid X-PAYMENT header (USDC on Base),
# POST to the resource:

curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/9 \
  -H "X-PAYMENT: <signed-x402-payment-token>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/charges/9
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02/request in USDC on Base), but there is no documentation, no request/response schema, and the actual functionality of this specific endpoint is unknown. The docs pages are empty beyond a wallet-connect prompt.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all return only 'Connect wallet' with no content.
  • —The specific functionality of /api/v1/stripe/charges/9 is unknown; the path implies Stripe charge operations but nothing confirms this.
  • —No request body schema or response schema is provided; callers cannot know what to send or what to expect back.
  • —No OpenAPI spec or AI plugin manifest found.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 09:37:35Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/7zscH6
x402-gated premium API endpoint on Base, paid per-call in USDC. — Clawmart · Clawmart