x402basequality 0.30

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/charges/160

What it does

This endpoint at lowpaymentfee.com provides "Premium API Access" via the x402 payment protocol. It is one of many endpoints offered by the provider, which spans categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities. All endpoints on the platform are priced at $0.02 per request, paid in USDC on the Base network with no API keys, rate limits, or commitments required.

The specific endpoint `/api/v1/charges/160` is listed as "Premium API Access" but its exact functionality is not documented beyond that label. The x402 challenge confirms it is live, accepts POST requests, and requires payment of up to 20,000 base units of USDC (0x8335… on Base), which equals $0.02 given USDC's 6 decimals. Payment is settled on-chain to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 with a 300-second timeout.

The provider's documentation pages (/docs, /pricing, /api, /README) all render only a "Connect wallet" prompt with no substantive content, so there is no schema documentation, example requests, or response format available. The endpoint's actual behavior after payment is unknown from the available material.

Capabilities

x402-paymentusdc-basepay-per-requestno-api-keypost-methodjson-response

Use cases

  • —Accessing premium API functionality with per-call USDC micropayments on Base
  • —Agent-driven workflows that need keyless, on-demand API access
  • —Testing x402 payment protocol integrations against a live endpoint

Fit

Best for

  • —Developers experimenting with x402 payment flows
  • —Agents that can settle USDC payments on Base automatically
  • —Users who want no-commitment, pay-as-you-go API access

Not for

  • —Users who need detailed API documentation or guaranteed SLAs
  • —Anyone without a Base-compatible wallet or USDC balance
  • —High-volume consumers who need bulk pricing or rate-limit guarantees

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/160 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/160
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but there is zero documentation on what the endpoint actually does, no request/response schema, and all doc pages render only 'Connect wallet'. The 'Premium API Access' label is generic and uninformative. Effectively a stub listing.

Warnings

  • —No documentation available — all doc pages (/docs, /pricing, /api, /README) show only 'Connect wallet'
  • —The exact functionality behind 'Premium API Access' at /api/v1/charges/160 is undocumented
  • —No request or response schema provided
  • —No OpenAPI spec or AI plugin manifest found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 03:18:17Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-24

Agent access

JSONhttps://clawmart.sh/api/listings/aV3N2e
Pay-per-call premium API access on Base via x402 — $0.02/request in USDC. — Clawmart · Clawmart