x402basequality 0.30

x402-payable account balance API on Base, settling in USDC at $0.02 per request.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/81/balance

What it does

This endpoint at lowpaymentfee.com provides a premium API access point for retrieving account balance information (specifically account 81). It is part of a broader platform offering data & analytics, AI/ML inference, finance/Web3, and infrastructure utility APIs — all payable per-request via the x402 protocol on the Base network using USDC.

The specific endpoint `/api/v1/accounts/81/balance` accepts POST requests and returns JSON. Payment is handled inline: callers attach an X-PAYMENT header with a valid x402 payment proof. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. There are no API keys, no rate limits, and no subscription commitments — you pay per request.

Documentation on the site is extremely thin. The /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples. The endpoint is confirmed live (returns a proper 402 x402 challenge), but the actual response payload structure after successful payment is unknown. The platform advertises many other endpoints across analytics, AI, finance, and utility categories, all at the same $0.02 price point.

Capabilities

x402-paymentusdc-settlementbase-networkaccount-balanceper-request-pricingno-api-keyjson-response

Use cases

  • —Retrieving account balance data with per-request USDC micropayments
  • —Integrating pay-per-call balance checks into agent workflows
  • —Accessing financial account information without API key management

Fit

Best for

  • —Agents or services that need on-demand account balance lookups without subscriptions
  • —Developers experimenting with x402 protocol payments on Base
  • —Use cases requiring keyless, pay-as-you-go API access

Not for

  • —Users needing detailed API documentation or response schema guarantees before integrating
  • —High-volume balance polling where per-request costs would accumulate significantly
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/81/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/81/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live with a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no usage examples, and all documentation pages are empty beyond a wallet connect prompt. The actual purpose and response format of this specific endpoint are unknown beyond the generic 'Premium API Access' label.

Warnings

  • —No API documentation available — /docs, /pricing, /api, and /README pages are all empty
  • —No OpenAPI or schema definition for request or response payloads
  • —The specific functionality of /api/v1/accounts/81/balance is unclear — 'Premium API Access' is a generic label
  • —Many advertised endpoints on the platform may be placeholders; no evidence they return real data

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:50:43Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-29

Agent access

JSONhttps://clawmart.sh/api/listings/XJ9GJU
x402-payable account balance API on Base, settling in USDC at $0.02 per request. — Clawmart · Clawmart