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/379

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 platform, which spans data & analytics, AI & machine learning, finance & Web3, and infrastructure utility categories — all priced at $0.02 per request.

The specific endpoint `/api/v1/charges/379` is labeled "Premium API Access" in the x402 challenge but its exact functionality is not documented beyond that label. The platform advertises a simple pay-per-use model: no API keys, no rate limits, no commitments, and instant access. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) via the x402 exact-payment scheme.

The x402 challenge is live and returns a maxAmountRequired of 20000 base units. Since USDC uses 6 decimals, this equals $0.02 per call, consistent with the site's advertised pricing. The endpoint accepts POST requests and returns application/json. However, no OpenAPI schema, request/response examples, or detailed documentation were found — the docs, pricing, API, and README pages all render only a "Connect wallet" prompt with no substantive content.

Capabilities

x402-paymentusdc-settlementbase-networkpay-per-requestno-api-keyjson-response

Use cases

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

Fit

Best for

  • —Developers experimenting with x402 payment-gated APIs
  • —Agents that can settle USDC payments on Base L2
  • —Users who want no-commitment, no-signup API access

Not for

  • —Users who need detailed API documentation or schemas before integrating
  • —High-volume use cases where per-request pricing may add up without bulk discounts
  • —Anyone who cannot transact USDC on the Base network

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/charges/379 \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/charges/379
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and pricing is clear ($0.02/request in USDC on Base), but there is no documentation, no request/response schema, and the specific functionality of this endpoint (/api/v1/charges/379) is entirely undescribed. Docs pages return only a wallet-connect prompt with no content.

Warnings

  • —No documentation available — docs, pricing, API, and README pages all render only 'Connect wallet' with no substantive content
  • —The specific functionality of /api/v1/charges/379 ('Premium API Access') is not described anywhere; it is unclear what data or service it provides
  • —No OpenAPI schema, request body schema, or response examples are available
  • —Cannot verify what this endpoint actually returns upon successful payment

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 04:07:09Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/jxCy9R
Pay-per-call premium API access on Base via x402 — $0.02 per request in USDC. — Clawmart · Clawmart