x402basequality 0.35

Check account balance via x402 micropayment on Base network for $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/146/balance

What it does

This endpoint at lowpaymentfee.com returns account balance information for a specific account (account ID 146) behind an x402 paywall. It is part of a broader platform offering dozens of pay-per-call APIs spanning data analytics, AI/ML inference, finance/Web3 data, and infrastructure utilities — all priced at $0.02 per request and settled in USDC on the Base network.

The specific endpoint `/api/v1/accounts/146/balance` accepts POST requests and charges a maximum of 20,000 base units of USDC (0.02 USDC, i.e., $0.02) per call. Payment is made via the x402 protocol: callers include an X-PAYMENT header with a signed payment proof, and the server verifies it before returning the JSON response. No API keys, rate limits, or upfront commitments are required — access is instant once payment is attached.

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. Documentation pages beyond the landing page appear to require a wallet connection and were not crawlable, so detailed request/response schemas for this specific balance endpoint are not available.

Capabilities

x402-paymentusdc-base-networkaccount-balancepay-per-requestno-api-keyjson-response

Use cases

  • —Querying account balance data programmatically with per-request USDC micropayments
  • —Integrating balance lookups into agent workflows without managing API keys
  • —Demonstrating x402 protocol payment flows on Base network

Fit

Best for

  • —Developers experimenting with x402 pay-per-call APIs
  • —Agents that need on-demand account balance data without subscription overhead
  • —Projects already using USDC on Base that want frictionless API access

Not for

  • —High-volume balance polling where $0.02/request adds up quickly
  • —Users who need detailed API documentation or response schemas before integrating
  • —Applications requiring non-crypto payment methods

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/146/balance \
  -H "X-PAYMENT: <x402-payment-proof>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/146/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge confirmed) and pricing is clear ($0.02 USDC on Base). However, there is no documentation on request parameters, response schema, or what 'account 146 balance' actually represents. The docs, API, pricing, and README pages all returned only a 'Connect wallet' prompt with no useful content. This is effectively a stub listing.

Warnings

  • —No request or response schema available — the endpoint's actual data output is unknown
  • —Documentation pages require wallet connection and could not be crawled
  • —The specific meaning of 'account 146 balance' is unclear — it may be a demo or placeholder endpoint
  • —No OpenAPI spec or ai-plugin manifest found

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:20:03Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/xLnqMB
Check account balance via x402 micropayment on Base network for $0.02 per request. — Clawmart · Clawmart