x402basequality 0.30

x402-gated account balance endpoint on Base, paying $0.02 per request in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/27/balance

What it does

This endpoint at lowpaymentfee.com provides account balance information via a POST request, gated behind the x402 payment protocol. The specific resource is `/api/v1/accounts/27/balance`, which returns JSON data upon payment. It is part of a broader platform that advertises multiple API categories including data & analytics, AI & machine learning, finance & Web3, and infrastructure utilities — all priced at $0.02 per request.

Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with the x402 "exact" scheme. The maximum amount required is 20,000 base units, which at 6 decimals equals $0.02 USD per call. No API keys or rate limits are advertised; access is instant once payment is included in the X-PAYMENT header. The endpoint returned a valid 402 challenge during probing, confirming it is live.

The specific functionality of this particular endpoint (account balance for account ID 27) is not well-documented beyond the generic "Premium API Access" label. The broader site lists many endpoints but the docs, pricing, and README pages all render only a "Connect wallet" prompt with no additional technical documentation. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawl. The endpoint appears functional but its exact input parameters and response shape are unknown.

Capabilities

x402-paymentusdc-settlementbase-networkaccount-balancejson-responsepay-per-request

Use cases

  • —Querying account balance data with per-request USDC micropayments
  • —Integrating x402-compatible payment flows into agent workflows
  • —Accessing financial account information without API key registration

Fit

Best for

  • —Agents or services that already support x402 payment protocol
  • —Use cases requiring keyless, pay-per-request API access on Base
  • —Developers experimenting with x402 micropayment patterns

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integration
  • —High-volume use cases where per-request pricing may add up without bulk discounts
  • —Anyone without a Base-network USDC wallet

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/27/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-header>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/27/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 402 challenge, but there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The docs pages all render only 'Connect wallet' with no content. The specific purpose of this endpoint (account 27 balance) is unclear and undocumented.

Warnings

  • —No OpenAPI spec or schema available for request or response
  • —All documentation pages (docs, pricing, README, api) render only 'Connect wallet' with no useful content
  • —The endpoint path references a specific account ID (27) with no explanation of what this represents
  • —No request body schema or response examples are available — integration requires trial and error

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:17:31Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-28

Agent access

JSONhttps://clawmart.sh/api/listings/j4gDFs
x402-gated account balance endpoint on Base, paying $0.02 per request in USDC. — Clawmart · Clawmart