x402basequality 0.30

x402-gated account balance endpoint on Base, pay-per-call with USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/152/balance

What it does

This endpoint at lowpaymentfee.com provides an account balance lookup (account ID 152) behind an x402 paywall. It is part of a broader platform that offers a variety of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3 data, and utility services — all gated via the x402 protocol on the Base network and settled in USDC.

The specific endpoint `/api/v1/accounts/152/balance` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). The platform's landing page confirms uniform $0.02/request pricing across all endpoints, with no API keys, no rate limits, and no minimum commitments required.

Documentation is extremely sparse — 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 available. The endpoint is confirmed live (returns a proper 402 x402 challenge), but without documentation it is unclear what request body this endpoint expects or what the response payload looks like beyond the stated `application/json` MIME type.

Capabilities

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

Use cases

  • —Querying account balance data with per-request USDC micropayments
  • —Agent-driven financial data retrieval without API key management
  • —Programmatic balance checks settled on Base L2

Fit

Best for

  • —Developers wanting keyless, pay-per-use API access
  • —AI agents that can settle x402 payments on Base
  • —Users who prefer crypto micropayments over subscription billing

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integration
  • —High-volume use cases where per-request pricing may add up compared to flat-rate plans
  • —Users without a Base-compatible USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/152/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/152/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live with a valid x402 challenge and clear pricing ($0.02/request in USDC on Base). However, there is no documentation, no OpenAPI spec, no request/response examples, and the docs pages are empty. The purpose of this specific endpoint (account 152 balance) is vague and undocumented.

Warnings

  • —No API documentation available — /docs, /pricing, /api, and /README pages all show only 'Connect wallet' with no content.
  • —No OpenAPI or schema definition provided for request or response payloads.
  • —The specific purpose of 'account 152 balance' is undocumented; it is unclear what data is returned or what input is expected.
  • —The broader platform lists many endpoints (AI, analytics, finance, utils) but none have documented schemas.

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:23:35Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/akfLe3
x402-gated account balance endpoint on Base, pay-per-call with USDC. — Clawmart · Clawmart