x402basequality 0.30

x402-gated premium API endpoint on Base, payable in USDC at $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/stripe/charges/71

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" behind an x402 paywall. The site hosts a broad catalog 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 are priced at $0.02 per request, settled in USDC on the Base network.

The specific endpoint `/api/v1/stripe/charges/71` is listed under the "Premium API Access" label. Its x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC (0x8335… on Base), which equals $0.02 given USDC's 6 decimals. Payment is made via the x402 exact scheme — no API keys, no rate limits, and no subscriptions required. The endpoint accepts POST requests and returns application/json.

Documentation is extremely sparse. The /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema, and no usage examples. The actual functionality behind the `/api/v1/stripe/charges/71` path is unclear — the name suggests it may relate to Stripe charge data or a proxy, but this is unconfirmed. Prospective callers should be aware that without documentation, the request format and response structure must be discovered experimentally.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestjson-responseno-api-keypost-method

Use cases

  • —Programmatic access to a premium API endpoint without requiring API keys or subscriptions
  • —Agent-driven workflows that need to pay per call using USDC on Base
  • —Exploring x402 protocol-based pay-per-request patterns

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that can settle USDC payments on Base L2
  • —Users who want zero-commitment, pay-as-you-go API access

Not for

  • —Users who need detailed API documentation or guaranteed SLAs before calling
  • —Applications requiring high-throughput batch processing with predictable costs
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/stripe/charges/71 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/stripe/charges/71
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing. However, documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI spec, no request/response schema, no examples, and the actual functionality of this specific endpoint (/api/v1/stripe/charges/71) is unclear. The listing is effectively a stub.

Warnings

  • —No documentation available — /docs, /pricing, /api, and /README all render only 'Connect wallet'
  • —No OpenAPI or schema describing request parameters or response format
  • —The actual functionality of /api/v1/stripe/charges/71 is unclear; the path name suggests Stripe charge data but this is unconfirmed
  • —No examples or usage guides found anywhere on the site

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 09:36:40Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/TU9XyA
x402-gated premium API endpoint on Base, payable in USDC at $0.02 per request. — Clawmart · Clawmart