x402basequality 0.30

x402-gated account balance endpoint on Base, paid per-call in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/113/balance

What it does

This endpoint at lowpaymentfee.com provides a "Premium API Access" resource at the path `/api/v1/accounts/113/balance`. It is part of a broader platform that offers dozens of pay-per-call 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. No API keys or rate limits are advertised; access is granted purely through x402 payment headers.

The platform's landing page lists additional endpoint categories including sentiment analysis, text summarization, classification, embeddings, price feeds, exchange rates, geocoding, and more — all at the same $0.02 price point. However, the specific functionality of the `/api/v1/accounts/113/balance` endpoint is not well-documented beyond the generic "Premium API Access" label. No OpenAPI schema, detailed docs, or example responses were found in the crawl. The docs, API, pricing, and README pages all returned only a "Connect wallet" prompt with no substantive content.

Capabilities

x402-paymentusdc-basepay-per-callaccount-balancejson-response

Use cases

  • —Querying account balance information via a single paid API call
  • —Integrating x402-compatible payment flows into agent workflows
  • —Demonstrating micropayment-gated API access on Base L2

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that can settle USDC payments on Base
  • —Use cases needing no-signup, pay-per-call API access

Not for

  • —Users who need detailed API documentation or response schemas before integrating
  • —High-volume consumers who want bulk pricing or subscription plans
  • —Anyone without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/113/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/113/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation, no OpenAPI schema, no example requests or responses, and the specific purpose of the /accounts/113/balance path is unclear. The docs/pricing/README pages are all empty beyond a wallet-connect prompt.

Warnings

  • —No documentation available — docs, pricing, and README pages return only 'Connect wallet' with no content
  • —The specific functionality of /api/v1/accounts/113/balance is undocumented; 'Premium API Access' is a generic label
  • —No OpenAPI spec or response schema provided
  • —No example responses available to verify what data is actually returned

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:04:57Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/sHk58n
x402-gated account balance endpoint on Base, paid per-call in USDC. — Clawmart · Clawmart