x402basequality 0.30

x402-gated account balance endpoint on Base, paid per-call in USDC.

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/182/balance

What it does

This endpoint at lowpaymentfee.com provides a per-request paid API behind the x402 payment protocol. The specific path `/api/v1/accounts/182/balance` is described as "Premium API Access" and returns JSON. 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 and settled in USDC on the Base network.

The x402 challenge confirms the endpoint is live and accepts POST requests. Payment is settled on-chain via USDC (contract 0x8335…2913 on Base) to address 0x1A2B…85F3. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02. No API keys or rate limits are advertised; access is granted purely through the x402 payment header.

Documentation is extremely sparse — the /docs, /api, /pricing, 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 explanation of what the balance endpoint actually returns or what input it expects. The endpoint's purpose (account balance lookup) can only be inferred from the URL path. The broader platform lists many endpoints but provides no detailed documentation for any of them.

Capabilities

x402-paymentusdc-settlementbase-networkper-request-pricingaccount-balancejson-response

Use cases

  • —Querying account balance data via a pay-per-request model
  • —Integrating x402-compatible payment flows into agent workflows
  • —Accessing premium API data without API key registration

Fit

Best for

  • —Developers experimenting with x402 payment protocol integrations
  • —Agents that need keyless, pay-per-call API access on Base
  • —Low-volume consumers who prefer no subscription commitments

Not for

  • —Users who need detailed API documentation or OpenAPI specs before integrating
  • —High-volume consumers who would benefit from bulk pricing or subscriptions
  • —Anyone needing non-USDC or non-Base payment options

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/182/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/182/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation, no OpenAPI spec, no request/response schema, and no explanation of what the endpoint actually returns. The docs, pricing, and README pages are all empty beyond a wallet-connect prompt. This is effectively a stub listing.

Warnings

  • —No API documentation available — /docs, /api, /pricing, and /README pages are all empty
  • —No OpenAPI or request/response schema provided; input format and response structure are unknown
  • —The specific purpose of the /accounts/182/balance endpoint is unclear beyond the URL path inference
  • —The broader platform lists many endpoints but none appear to have documentation

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 01:36:52Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/RswbYv
x402-gated account balance endpoint on Base, paid per-call in USDC. — Clawmart · Clawmart