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/127

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall, settling payments in USDC on the Base network. The specific endpoint `/api/v1/stripe/charges/127` is part of a broader platform that offers dozens of pay-per-call APIs spanning data & analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints on the platform are priced at $0.02 per request.

The x402 challenge confirms the endpoint is live, accepting POST requests and requiring an X-PAYMENT header with an "exact" scheme payment of 20,000 base units of USDC (0x8335…2913 on Base). Since USDC uses 6 decimals, this equals $0.02 per call. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout. No API keys or rate limits are advertised — access is purely payment-gated.

Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional content. There is no OpenAPI schema, no request/response examples, and no description of what the `/api/v1/stripe/charges/127` endpoint specifically returns. The endpoint path suggests it may relate to Stripe charge data, but this is speculative. Without documentation or sample responses, the actual functionality of this particular endpoint remains unclear.

Capabilities

x402-paymentusdc-basepay-per-callno-api-keyno-rate-limithttp-post

Use cases

  • —Accessing premium API data without traditional API key registration
  • —Making one-off paid API calls settled in USDC on Base
  • —Agent-driven programmatic access to gated endpoints via x402 protocol

Fit

Best for

  • —Developers who want keyless, pay-per-call API access
  • —AI agents with USDC on Base that need to purchase API calls autonomously
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users needing detailed API documentation or response schemas before purchasing
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone without a Base-compatible wallet holding USDC

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/127 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/charges/127
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02/call in USDC on Base), but there is no documentation, no OpenAPI schema, no request/response examples, and no explanation of what this specific endpoint actually returns. The docs pages are empty beyond a wallet-connect prompt.

Warnings

  • —No documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
  • —No OpenAPI or output schema describing request parameters or response format
  • —The specific purpose of /api/v1/stripe/charges/127 is unclear — the endpoint name suggests Stripe charge data but this is unconfirmed
  • —No request or response examples available anywhere in crawled content

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 09:21:43Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/6qCchN
x402-gated premium API access on Base, paid per-call in USDC at $0.02/request. — Clawmart · Clawmart