x402basequality 0.35

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/30/balance

What it does

This endpoint at lowpaymentfee.com provides a "Premium API Access" resource at the path `/api/v1/accounts/30/balance`. It is part of a broader platform that offers dozens of pay-per-request API endpoints spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all gated via the x402 payment protocol on the Base network.

The specific endpoint probed returns an x402 challenge requesting payment in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913` on Base) with a `maxAmountRequired` of 20,000 base units. Since USDC uses 6 decimals, this translates to $0.02 per request, consistent with the platform's advertised flat pricing of $0.02/request across all endpoints. Payment is made via the `exact` scheme, and the endpoint accepts POST requests.

The platform advertises no API keys, no rate limits, and instant access. Documentation pages (`/docs`, `/pricing`, `/api`, `/README`) all returned only a "Connect wallet" prompt with no substantive content, so the actual response schema and detailed behavior of this particular balance endpoint remain undocumented. The endpoint is live (returns a proper 402 challenge), but without documentation or example responses, it is unclear exactly what data the balance response contains or what input parameters (if any) the POST body expects.

Capabilities

x402-paymentusdc-basepay-per-requestaccount-balancejson-responseno-api-key

Use cases

  • —Querying account balance data via a single paid API call
  • —Integrating pay-per-request balance lookups into agent workflows
  • —Accessing financial data without API key registration

Fit

Best for

  • —Agents that can settle x402 payments in USDC on Base
  • —Developers wanting zero-signup, pay-per-call API access
  • —Prototyping with micropayment-gated endpoints

Not for

  • —Users who need detailed API documentation or response schemas before integrating
  • —High-volume use cases where $0.02/request adds up significantly
  • —Users without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/30/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/30/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI schema, no documentation beyond a wallet-connect prompt, no example responses, and the purpose of this specific '/accounts/30/balance' path is unclear. Effectively a stub listing.

Warnings

  • —No API documentation available — all doc pages return only 'Connect wallet' with no content
  • —Response schema for this endpoint is completely unknown
  • —The specific meaning of 'accounts/30/balance' is undocumented — it is unclear whether '30' is a fixed demo account or a parameterized path
  • —No input schema documented for the POST body

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:23:25Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-28

Agent access

JSONhttps://clawmart.sh/api/listings/S95JdN
x402-gated account balance endpoint on Base, pay-per-call with USDC. — Clawmart · Clawmart