x402basequality 0.30

x402-gated account balance endpoint on Base, pay-per-call with USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/11/balance

What it does

This endpoint at lowpaymentfee.com provides a pay-per-request "Premium API Access" resource at the path `/api/v1/accounts/11/balance`. It is part of a broader platform that offers dozens of x402-gated API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all settled on the Base network using USDC.

The specific endpoint probed returns account balance information via HTTP POST. It uses the x402 payment protocol (version 1, "exact" scheme) and requires a maximum of 20,000 base units of USDC (0.02 USD) per request, paid to the address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The asset contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` is the canonical USDC contract on Base. No API keys or rate limits are advertised; access is gated purely by the x402 payment challenge.

Documentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no detailed description of what the balance endpoint actually returns. The platform's landing page lists many endpoints at $0.02 each but provides no further technical detail. Treat this as a functional but minimally documented service.

Capabilities

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

Use cases

  • —Querying account balance data with per-request USDC micropayments
  • —Integrating pay-per-call balance lookups into agent workflows
  • —Accessing financial data without API key registration

Fit

Best for

  • —Agents or services that need keyless, pay-per-call account balance queries
  • —Developers experimenting with x402 payment protocol integrations
  • —Use cases requiring low-friction API access without subscriptions

Not for

  • —Production workloads requiring detailed API documentation and SLAs
  • —High-volume batch queries where per-request pricing is inefficient
  • —Users without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/11/balance
# Returns 402 with x402 payment challenge.
# Include X-PAYMENT header with a valid x402 payment proof to access the resource.

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/11/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge, but documentation is essentially nonexistent — all doc pages show only 'Connect wallet'. There is no OpenAPI schema, no request/response examples, and no description of what the balance endpoint returns. The specific endpoint path (/accounts/11/balance) is not listed on the landing page, adding uncertainty about its purpose.

Warnings

  • —No documentation available — all doc/pricing/API pages render only 'Connect wallet'
  • —No OpenAPI or JSON schema describing request parameters or response format
  • —The specific endpoint /api/v1/accounts/11/balance is not listed among the platform's advertised APIs
  • —Purpose and response structure of 'account balance' endpoint is unknown — could be a demo or placeholder

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:15:51Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-28

Agent access

JSONhttps://clawmart.sh/api/listings/QB8fPD
x402-gated account balance endpoint on Base, pay-per-call with USDC. — Clawmart · Clawmart