x402basequality 0.30

Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/245

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. The specific resource `/api/v1/charges/245` is one of many endpoints offered by the provider, which hosts a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.

Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The x402 challenge confirms the endpoint is live, accepting POST requests with an exact payment scheme. The max amount required is 20,000 base units of USDC (6 decimals), which equals $0.02. No API keys are needed; callers simply attach an X-PAYMENT header with the appropriate payment proof. The provider advertises no rate limits and instant access.

However, the specific functionality behind `/api/v1/charges/245` is not documented — the description is simply "Premium API Access" with no input/output schema beyond confirming it accepts HTTP POST and returns application/json. The docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no additional technical documentation. Without knowing what this particular charge endpoint does (it doesn't map to any of the named endpoints on the landing page), callers should treat this as an opaque paid endpoint whose actual behavior is unclear.

Capabilities

x402-paymentusdc-base-networkpay-per-requestno-api-keyhttp-postjson-response

Use cases

  • —Programmatic access to a paid API endpoint without traditional API key registration
  • —Agent-driven workflows that need to pay per call using on-chain USDC on Base
  • —Testing x402 payment protocol integrations against a live endpoint

Fit

Best for

  • —Developers experimenting with x402 payment flows
  • —AI agents that can settle micropayments on Base
  • —Users who want keyless, pay-as-you-go API access

Not for

  • —Users who need clear documentation of request/response schemas before paying
  • —High-volume use cases where $0.02/request adds up without volume discounts
  • —Anyone needing guaranteed SLAs or support

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/245 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/245
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base), but the specific functionality of /api/v1/charges/245 is completely undocumented. No input/output schema, no examples, and all doc pages render only 'Connect wallet'. This is effectively a stub listing.

Warnings

  • —The specific functionality of /api/v1/charges/245 is not documented — 'Premium API Access' is the only description available.
  • —All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no technical content.
  • —This endpoint path does not correspond to any of the named endpoints listed on the landing page (analytics, AI, finance, utils).
  • —No input or output schema is available beyond the basic x402 outputSchema confirming HTTP POST.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:33:30Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-22

Agent access

JSONhttps://clawmart.sh/api/listings/3fYnAU
Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC. — Clawmart · Clawmart