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/87/balance

What it does

This endpoint at lowpaymentfee.com returns account balance information for account ID 87. It is part of a broader platform offering dozens of pay-per-call API endpoints across data analytics, AI/ML inference, finance/Web3, and infrastructure utility categories. All endpoints are gated via the x402 payment protocol, settling in USDC on the Base network.

The specific endpoint `/api/v1/accounts/87/balance` is listed under "Premium API Access" and accepts POST requests. Payment is handled inline: callers attach an X-PAYMENT header with a signed USDC payment of up to 20,000 base units (i.e., $0.02 given USDC's 6 decimals). There are no API keys, no rate limits, and no subscription commitments — each call is independently paid for at the time of the request.

The platform advertises a uniform $0.02-per-request pricing model across all its endpoints. Documentation pages (/docs, /pricing, /README) appear to require a wallet connection and do not expose further technical detail, so the exact response schema for this balance endpoint is unknown. The x402 challenge was successfully captured, confirming the endpoint is live and accepting payment challenges with a 300-second timeout.

Capabilities

x402-paymentusdc-base-networkaccount-balancepay-per-requestno-api-keypost-method

Use cases

  • —Querying account balance data on-demand without subscription overhead
  • —Integrating balance checks into automated agent workflows that settle payments in USDC
  • —Building dashboards that pull account balances via micropayment-gated endpoints

Fit

Best for

  • —Agents or bots that need one-off balance lookups without managing API keys
  • —Developers prototyping on Base network with USDC micropayments
  • —Low-volume consumers who want pay-as-you-go pricing with no commitments

Not for

  • —High-frequency polling where $0.02 per request adds up quickly
  • —Users who need detailed documentation or OpenAPI schemas before integrating
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/87/balance \
  -H "X-PAYMENT: <x402-signed-payment-header>" \
  -H "Content-Type: application/json"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/87/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.35/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base), but there is no OpenAPI schema, no documented request/response format, and all documentation pages behind the landing page require wallet connection and yield no content. The specific purpose of 'account 87 balance' is opaque.

Warnings

  • —No OpenAPI or response schema available — the exact shape of the response is unknown.
  • —Documentation pages (/docs, /pricing, /README) all render only a 'Connect wallet' prompt with no usable content.
  • —The endpoint path references a hardcoded account ID (87); it is unclear whether this is a demo or a real account.
  • —The description 'Premium API Access' is generic and does not clarify what balance data is returned.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:46:57Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-28

Agent access

JSONhttps://clawmart.sh/api/listings/svA6ex
Check account balance via x402 micropayment on Base network for $0.02 per request. — Clawmart · Clawmart