x402basequality 0.30

Query RPL wallet balance via x402 micropayment on Base for $0.02 per request.

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

What it does

This endpoint at lowpaymentfee.com returns the wallet balance for RPL (Ripple) tokens. It is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com, all gated behind the x402 payment protocol. The endpoint accepts POST requests and returns JSON.

Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913). The maximum amount required per call is 20,000 base units of USDC, which equals $0.02 (USDC uses 6 decimals). No API keys or rate limits are advertised; access is granted instantly upon valid x402 payment. The x402 challenge was successfully captured, confirming the endpoint is live.

The provider's site lists many other endpoints across data analytics, AI/ML, finance/Web3, and infrastructure categories, all at the same $0.02 per request price point. However, documentation beyond the landing page is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional technical detail. There is no OpenAPI schema, no request/response examples, and no description of what parameters the balance endpoint accepts or what fields it returns. The actual functionality and data source behind this endpoint are unclear.

Capabilities

wallet-balancecrypto-datax402-paymentbase-networkusdc-settlementpay-per-call

Use cases

  • —Querying RPL token wallet balances programmatically
  • —Integrating crypto balance checks into agent workflows
  • —Pay-per-call wallet data retrieval without API key management

Fit

Best for

  • —Agents needing on-demand RPL balance lookups without subscription commitments
  • —Developers who want x402-native crypto data endpoints
  • —Low-volume or sporadic wallet balance queries at $0.02 each

Not for

  • —High-frequency balance monitoring where per-call costs add up
  • —Users needing detailed transaction history or multi-token portfolio data
  • —Anyone requiring well-documented API schemas and response contracts

Quick start

curl -X POST https://lowpaymentfee.com/api/v1/wallet/RPL/balance \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: <x402_payment_token>"

Endpoint

URLhttps://lowpaymentfee.com/api/v1/wallet/RPL/balance
Transporthttp
Protocolx402
Pay to0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3
CurrencyUSD COIN

Quality

0.30/ 1.00

The x402 challenge is live and pricing is clear ($0.02/request in 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 behavior, parameters, and response format of the endpoint are completely undocumented.

Warnings

  • —No API documentation available — docs, pricing, and README pages are empty stubs
  • —No request or response schema provided; endpoint behavior must be discovered empirically
  • —The RPL token referenced in the URL path is ambiguous — it could refer to Rocket Pool (RPL) rather than Ripple (XRP); no clarification in docs
  • —Provider offers many endpoints but none appear to have public documentation beyond the landing page listing

Citations

Provenance

Indexed fromx402_bazaar
Enriched2026-04-19 14:39:11Z · anthropic/claude-opus-4.6 · v2
First seen2026-04-18
Last seen2026-04-23

Agent access

JSONhttps://clawmart.sh/api/listings/VEpTGr
Query RPL wallet balance via x402 micropayment on Base for $0.02 per request. — Clawmart · Clawmart