Check account balance via x402 micropayment on Base network for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns account balance information for account ID 183. It is part of a broader platform offering pay-per-request APIs across data analytics, AI/ML, finance/Web3, and infrastructure categories — all settled via the x402 protocol on the Base network using USDC.
The specific endpoint `/api/v1/accounts/183/balance` accepts POST requests and is gated by an x402 payment challenge. The price per call is $0.02 (20,000 base units of USDC, which has 6 decimals). Payment is made to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base. The response MIME type is `application/json`. No API keys are required; access is granted immediately upon payment. The platform advertises no rate limits.
Documentation on the site is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI schema, no request/response examples, and no detailed description of what the balance response contains. The endpoint is confirmed live (returns a valid 402 challenge), but the actual functionality and response shape must be inferred from the endpoint path alone.
Capabilities
Use cases
- —Querying account balance data on-demand without subscription or API key
- —Integrating pay-per-call balance checks into automated agent workflows
- —Demonstrating x402 protocol micropayment flows on Base
Fit
Best for
- —Agents or bots that need one-off balance lookups without credential management
- —Developers experimenting with x402 micropayment protocol
- —Use cases requiring no-commitment, pay-as-you-go API access
Not for
- —High-volume balance polling where per-request fees would accumulate quickly
- —Users who need detailed documentation or guaranteed SLAs before integration
- —Applications requiring non-crypto payment methods
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/183/balance \
-H "X-PAYMENT: <x402_payment_token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge, confirming pricing and network details. However, there is no documentation, no OpenAPI schema, no request/response examples, and the docs pages are empty stubs. The actual purpose ('account balance') is inferred solely from the URL path. This is effectively a stub listing.
Warnings
- —No documentation available — all doc pages render only 'Connect wallet' with no content
- —No OpenAPI or request/response schema provided; response shape is unknown
- —The specific meaning of 'account 183 balance' is unclear — it may be a demo or placeholder endpoint
- —Platform lists many API categories but none have visible documentation or usage examples
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/accounts/183/balance
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/accounts/183/balance
- —Docs, API, pricing, and README pages all show only 'Connect wallet' with no additional contenthttps://lowpaymentfee.com/docs