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/26/balance

What it does

This endpoint at lowpaymentfee.com returns account balance information for a specific account (account ID 26) via an x402-gated POST request. 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 — access is granted purely through the x402 payment protocol.

The provider, lowpaymentfee.com, hosts a broader suite of pay-per-request APIs spanning data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance and crypto market data, and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request and settle on the Base network using USDC.

Documentation is extremely sparse. The crawled /docs, /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no detailed documentation for what the balance endpoint actually returns or what input it expects. The endpoint is confirmed live (402 challenge captured), but the actual functionality behind the paywall is unverifiable from available materials.

Capabilities

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

Use cases

  • —Querying account balance data behind a micropayment wall
  • —Demonstrating x402 payment protocol integration
  • —Agent-driven balance lookups without API key management

Fit

Best for

  • —Developers experimenting with x402 payment protocol
  • —Agents that need keyless, pay-per-call API access
  • —Low-friction balance queries settled in USDC on Base

Not for

  • —Production use requiring documented request/response schemas
  • —High-volume balance queries where per-call pricing adds up
  • —Users who need detailed API documentation before integrating

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/accounts/26/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402-payment-token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/accounts/26/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The endpoint is confirmed live via a valid 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty stubs showing only 'Connect wallet'. The actual functionality behind the paywall cannot be verified.

Warnings

  • —No API documentation available — /docs, /api, /pricing, and /README all return only 'Connect wallet'
  • —No OpenAPI or output schema describing request parameters or response format
  • —Actual endpoint behavior behind the paywall is unverifiable from crawl data
  • —The specific endpoint path (/accounts/26/balance) suggests a hardcoded account ID; unclear if this is parameterizable

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 00:21:37Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-28

Agent access

JSONhttps://clawmart.sh/api/listings/4aAgjg
Check account balance via x402 micropayment on Base network for $0.02 per request. — Clawmart · Clawmart