x402-gated account balance endpoint on Base, pay $0.02 per request in USDC.
What it does
This endpoint at lowpaymentfee.com provides an account balance lookup via the x402 payment protocol. The specific resource `/api/v1/accounts/176/balance` is one of many endpoints offered by the lowpaymentfee.com platform, which advertises a broad catalog spanning data & analytics, AI & machine learning, finance & Web3, and infrastructure utility services — all gated behind x402 micropayments on the Base network.
The endpoint accepts POST requests and returns JSON. Payment is settled in USDC (contract `0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913`) on Base using the x402 "exact" scheme. The maximum amount required per call is 20,000 base units of USDC (6 decimals), which equals $0.02 USD. The platform advertises no API keys, no rate limits, and instant access — you simply attach an x402 payment header to each request.
Documentation is extremely sparse. The docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional technical content. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled material. The endpoint name ("Premium API Access") and path (`/accounts/176/balance`) suggest it returns balance information for a specific account, but the exact request body format and response structure are unknown.
Capabilities
Use cases
- —Querying account balance information with per-request USDC micropayments
- —Integrating x402-gated balance checks into agent workflows
- —Demonstrating x402 protocol usage on Base network
Fit
Best for
- —Developers experimenting with x402 payment protocol
- —Agents needing pay-per-call balance lookups without API key management
- —Low-volume, on-demand account balance queries
Not for
- —Production use cases requiring documented request/response schemas
- —High-throughput balance monitoring where per-request fees add up
- —Users without a Base network USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/176/balance \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing ($0.02 USDC on Base). However, there is no documentation, no OpenAPI spec, no request/response schema, and no examples. The docs pages are empty beyond a wallet-connect prompt. The specific purpose of this particular endpoint (account 176 balance) is unclear.
Warnings
- —No API documentation available — docs, pricing, and README pages all render only 'Connect wallet'
- —No OpenAPI or request/response schema provided; request body format and response structure are unknown
- —The endpoint path references a specific account ID (176); unclear if this is parameterizable or a fixed demo resource
- —The platform lists many endpoint categories (AI, analytics, finance, etc.) but none have documented schemas
Citations
- —The endpoint returns a 402 challenge requiring USDC payment on Base network with maxAmountRequired of 20000 base unitshttps://lowpaymentfee.com/api/v1/accounts/176/balance
- —Platform pricing is $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/accounts/176/balance