x402basequality 0.30

x402-gated account balance endpoint on Base, paying $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/82/balance

What it does

This endpoint at lowpaymentfee.com provides an account balance lookup (account ID 82) behind an x402 paywall. It is part of a broader platform that offers a variety of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all priced at $0.02 per call, settled in USDC on the Base network.

The specific endpoint `/api/v1/accounts/82/balance` accepts POST requests and returns JSON. The x402 challenge confirms the endpoint is live, requiring a maximum payment of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 given USDC's 6 decimals. Payment is sent to address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3 using the "exact" scheme with a 300-second timeout.

Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema beyond the x402 outputSchema stub, and no explanation of what fields the balance response contains or what input parameters the POST body expects. The platform advertises no API keys, no rate limits, and instant access, but specifics about the data returned by this particular endpoint are unknown.

Capabilities

x402-paymentusdc-settlementbase-networkaccount-balancepay-per-requestno-api-key

Use cases

  • —Querying account balance data with per-request USDC micropayments
  • —Integrating pay-as-you-go balance lookups into agent workflows
  • —Demonstrating x402 protocol payment flows on Base

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents needing on-demand balance data without API key management
  • —Low-volume, pay-per-use account queries

Not for

  • —High-volume balance polling where per-request fees add up
  • —Users who need detailed API documentation before integrating
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/82/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/82/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI spec, no request/response schema, and all documentation pages return only a wallet-connect prompt. The purpose of this specific endpoint (account 82 balance) is unexplained, making integration speculative.

Warnings

  • —No OpenAPI or schema documentation available — request body and response format are unknown
  • —All doc/pricing/README pages render only 'Connect wallet' with no content
  • —The endpoint path references a hardcoded account ID (82); unclear if this is parameterizable
  • —No information on what 'balance' data is returned or its format

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:54:10Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-28

Agent access

JSONhttps://clawmart.sh/api/listings/U2XbTQ
x402-gated account balance endpoint on Base, paying $0.02 per request in USDC. — Clawmart · Clawmart