Check account balance via x402-paid API on Base network for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns account balance information for a specific account (ID 180) 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 per-request through the x402 payment protocol.
The provider operates a broader platform offering multiple API categories including data & analytics, AI & machine learning (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 the same pay-per-use model.
The specific endpoint probed (/api/v1/accounts/180/balance) is live and returns a valid x402 challenge. However, 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 schema, no request/response examples, and no description of what the balance response actually contains. The endpoint's purpose and response format must be inferred from the URL path alone.
Capabilities
Use cases
- —Querying account balance data without managing API keys
- —Programmatic balance lookups settled via USDC micropayments
- —Agent-driven financial data retrieval with per-request payment
Fit
Best for
- —Developers wanting keyless, pay-per-use account balance queries
- —AI agents that can settle x402 payments on Base
- —Users who prefer crypto micropayments over subscription billing
Not for
- —High-volume balance polling where per-request fees add up quickly
- —Users who need detailed API documentation or response schema guarantees
- —Anyone without a Base-network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/180/balance \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge, but there is no OpenAPI schema, no request/response examples, and all documentation pages render only 'Connect wallet' with no technical content. The purpose and response format of this specific endpoint are inferred solely from the URL path.
Warnings
- —No API documentation available — docs, API, pricing, and README pages all show only 'Connect wallet'
- —No request or response schema provided; actual response format is unknown
- —The endpoint path references a hardcoded account ID (180); unclear if this is parameterizable or a fixed resource
- —Provider platform lists many endpoints but none have documented schemas or examples
Citations
- —Endpoint returns a valid x402 challenge with maxAmountRequired of 20000 in USDC on Base networkhttps://lowpaymentfee.com/api/v1/accounts/180/balance
- —All endpoints priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base networkhttps://lowpaymentfee.com/api/v1/accounts/180/balance