x402basequality 0.35

Check BAT wallet balance via x402 micropayment on Base for $0.02 per request.

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

What it does

This endpoint at lowpaymentfee.com returns the wallet balance for the Basic Attention Token (BAT) cryptocurrency. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, spanning data analytics, AI/ML inference, finance/Web3, and infrastructure utilities. All endpoints on the platform use the x402 payment protocol, settling in USDC on the Base network.

The specific endpoint `/api/v1/wallet/BAT/balance` accepts POST requests and is gated behind an x402 challenge. The maximum amount required per call is 20,000 base units of USDC (which uses 6 decimals), equating to $0.02 per request. No API keys are needed; payment is handled inline via the X-PAYMENT header. The response MIME type is application/json.

Documentation on the site is extremely sparse — the docs, pricing, and API pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled material. The endpoint is confirmed live (returns a proper 402 challenge), but the actual response schema for a successful paid call is unknown.

Capabilities

wallet-balancebat-tokencrypto-balance-lookupx402-paymentusdc-base-settlementpay-per-request

Use cases

  • —Querying the current BAT balance of a wallet address
  • —Building portfolio trackers that need BAT balance data
  • —Automated agents checking BAT holdings before executing trades
  • —Monitoring BAT wallet balances for alerting or reporting

Fit

Best for

  • —Agents needing on-demand BAT balance lookups without API key management
  • —Micropayment-friendly workflows where per-call pricing is preferred
  • —Developers integrating x402-compatible payment flows on Base

Not for

  • —Bulk or high-frequency balance polling where $0.02/call adds up quickly
  • —Users needing balances for tokens other than BAT (different endpoints exist)
  • —Anyone requiring detailed documentation or guaranteed SLAs

Quick start

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

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wallet/BAT/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. However, there is no OpenAPI spec, no documented request body schema, no response schema, and no usage examples. The docs pages are empty stubs. The actual functionality (what input is expected, what the response looks like) must be entirely inferred from the URL path.

Warnings

  • —No OpenAPI or schema documentation available — request and response formats are unknown
  • —All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no technical content
  • —The specific wallet/BAT/balance endpoint is not listed on the homepage's API catalog, raising questions about whether it is a fully supported production endpoint
  • —No rate limit or SLA information provided

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:32:08Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/BgFudP
Check BAT wallet balance via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart