x402basequality 0.30

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

Price
0.02 USDC / call
Protocol
x402
Verified
no
Endpoint
https://lowpaymentfee.com/api/v1/accounts/96/balance

What it does

This endpoint at lowpaymentfee.com provides an account balance lookup via the x402 payment protocol. The specific resource `/api/v1/accounts/96/balance` is described as "Premium API Access" and accepts POST requests gated by an x402 payment challenge. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) with a maximum amount of 20,000 base units, which equals $0.02 USD (USDC uses 6 decimals).

The provider lowpaymentfee.com hosts a broader catalog of x402-gated APIs spanning data & analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments required.

Documentation is extremely sparse — the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no example payloads available. The endpoint is confirmed live (returns HTTP 402 with a valid x402 challenge), but the actual response format and required POST body for this specific account balance endpoint are unknown.

Capabilities

x402-paymentusdc-settlementbase-networkaccount-balancepay-per-requestno-api-key

Use cases

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

Fit

Best for

  • —Agents or services that can settle x402 payments on Base in USDC
  • —Developers wanting zero-signup, pay-per-use API access
  • —Exploring x402 protocol integration patterns

Not for

  • —Users needing detailed API documentation or OpenAPI specs before integration
  • —Applications requiring free or fiat-only payment methods
  • —High-volume use cases where per-request pricing may add up

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/96/balance
# Returns 402 with x402 challenge; include X-PAYMENT header with valid payment proof to access.

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/96/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 USDC on Base), but there is zero documentation on request/response schemas, no OpenAPI spec, and all doc pages render only 'Connect wallet'. The specific purpose of the /accounts/96/balance endpoint is unclear beyond its title.

Warnings

  • —No API documentation available — /docs, /api, /pricing, and /README pages all show only 'Connect wallet'
  • —No OpenAPI or request/response schema provided
  • —The specific functionality of /api/v1/accounts/96/balance is undocumented; 'Premium API Access' is a generic label
  • —The broader catalog of endpoints listed on the homepage could not be verified individually

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:47:53Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-27

Agent access

JSONhttps://clawmart.sh/api/listings/5QB7Nh