x402basequality 0.30

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/103/balance

What it does

This endpoint at lowpaymentfee.com provides account balance information behind an x402 paywall. The specific resource `/api/v1/accounts/103/balance` accepts POST requests and returns JSON. Payment is settled in USDC on the Base network at $0.02 per call (20,000 base units with 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof.

The provider lowpaymentfee.com hosts a broader suite of pay-per-call APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance/crypto market data, and infrastructure utilities. All endpoints share the same $0.02/request pricing model and x402 payment flow on Base. However, the specific endpoint being listed here is the account balance lookup under `/api/v1/accounts/103/balance`.

Documentation beyond the landing page is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no substantive content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawl. The exact fields returned by this balance endpoint are unknown.

Capabilities

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

Use cases

  • —Querying account balance information programmatically with per-call USDC micropayments
  • —Integrating balance checks into agent workflows without managing API keys
  • —Demonstrating x402 payment protocol usage on Base network

Fit

Best for

  • —Developers experimenting with x402 protocol payments
  • —Agents needing keyless, pay-per-call balance lookups
  • —Low-volume or sporadic balance queries where subscription pricing is overkill

Not for

  • —High-volume balance polling where $0.02/request adds up quickly
  • —Users who need detailed documentation or guaranteed SLAs
  • —Querying balances on networks other than Base

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/103/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-proof>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/103/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live (402 challenge captured) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no request/response schema, no documentation beyond a landing page, and no examples. The purpose of this specific endpoint (account 103 balance) is vague with no context on what 'account 103' refers to. Effectively a stub listing.

Warnings

  • —No OpenAPI or schema documentation available — request body and response format are completely unknown
  • —All documentation pages (/docs, /api, /pricing, /README) return only a 'Connect wallet' prompt with no content
  • —The specific meaning of 'accounts/103/balance' is unclear — it is unknown what account 103 represents or whether the account ID is parameterizable
  • —The broader platform lists many endpoint categories (AI, analytics, finance, utilities) all at $0.02, but none have documented schemas

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:03:37Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/hZEk7C
Check account balance via x402 micropayment on Base network for $0.02 per request. — Clawmart · Clawmart