Check account balance via x402 micropayment on Base network for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com provides account balance information behind an x402 paywall. The specific resource `/api/v1/accounts/64/balance` returns balance data for account ID 64 in JSON format. Payment is settled on the Base network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) at a cost of $0.02 per request (20,000 base units with 6 decimals).
The provider operates a broader platform offering multiple API categories including Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure utilities — all priced uniformly at $0.02 per call. The platform advertises no API keys, no rate limits, and instant access via x402 payment headers. However, the specific endpoint being listed here is the account balance lookup, and details about what data fields are returned are not documented in the crawled material.
The x402 challenge was successfully captured with version 1, confirming the endpoint is live. The payment scheme is "exact" with a max timeout of 300 seconds. No OpenAPI schema, detailed documentation, or example responses were found in the crawl — the docs, API, pricing, and README pages all rendered only a "Connect wallet" prompt with no substantive content.
Capabilities
Use cases
- —Querying account balance data with per-request USDC micropayments
- —Integrating pay-per-call balance lookups into agent workflows
- —Accessing financial account information without API key registration
Fit
Best for
- —Agents that need on-demand account balance data without subscription commitments
- —Developers testing x402 payment flows on Base network
- —Use cases requiring keyless, pay-as-you-go API access
Not for
- —High-volume balance polling where per-request costs would accumulate quickly
- —Users who need detailed API documentation or response schema guarantees before integrating
- —Applications requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/64/balance \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documented response format, no example requests or responses, and the docs/pricing/README pages are all empty beyond a wallet connect prompt. The specific purpose of this endpoint (account 64 balance) is opaque — it's unclear what 'account' refers to or what fields are returned.
Warnings
- —No API documentation available — docs, pricing, and README pages render only 'Connect wallet' with no content
- —No response schema or example responses documented for this endpoint
- —The endpoint path references a hardcoded account ID (64); unclear if this is parameterizable or what 'account' represents
- —The broader platform lists many API categories (AI, finance, analytics, etc.) all at $0.02 but none have visible documentation
Citations
- —The endpoint returns HTTP 402 with x402 version 1 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/accounts/64/balance
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/accounts/64/balance
- —All APIs priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Platform offers Data & Analytics, AI & ML, Finance & Web3, and Infrastructure API categorieshttps://lowpaymentfee.com