Check LEO wallet balance via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns the wallet balance for LEO (likely the LEO token) via a pay-per-call x402 protocol. The endpoint is live and returns a 402 challenge requiring payment of 20,000 base units of USDC on the Base network (0.02 USD, since USDC uses 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof to access the data.
The provider, lowpaymentfee.com, hosts a broader suite of x402-gated APIs spanning data analytics, AI/ML inference, finance/Web3 market data, and infrastructure utilities, all priced at $0.02 per request. However, this specific listing covers only the `/api/v1/wallet/LEO/balance` endpoint. 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 spec, no request/response schema documentation, and no usage examples provided by the site.
Because of the lack of documentation, the exact request body format and response structure are unknown. The x402 challenge indicates the endpoint accepts HTTP POST requests and returns `application/json`. Callers should expect to need a valid x402 payment header settled in USDC on Base to the address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3`.
Capabilities
Use cases
- —Querying the current LEO token wallet balance programmatically
- —Integrating LEO balance checks into trading bots or portfolio dashboards
- —Agent-driven wallet monitoring without API key management
Fit
Best for
- —Developers needing quick, keyless access to LEO wallet balances
- —AI agents that can settle x402 micropayments on Base
- —Applications requiring pay-per-use crypto data without subscriptions
Not for
- —Users needing bulk or high-frequency balance queries at lower cost (no volume discounts documented)
- —Developers requiring detailed API documentation or response schema guarantees
- —Querying balances for tokens other than LEO (this endpoint is LEO-specific)
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wallet/LEO/balance \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>"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 OpenAPI spec, no documented request/response schema, no usage examples, and all documentation pages render only a wallet-connect prompt. The actual functionality and response format must be inferred entirely from the URL path.
Warnings
- —No API documentation available — docs, pricing, and README pages all show only 'Connect wallet' with no technical content.
- —No request body schema or response schema documented; callers must guess the expected format.
- —The broader site lists many endpoints across diverse categories (AI, analytics, finance, infrastructure) all at $0.02 — unclear whether all are fully implemented or stubs.
- —No information on uptime, SLAs, or the provider's identity.
Citations
- —The endpoint returns a 402 challenge requiring 20,000 base units of USDC on Base (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), which equals $0.02.https://lowpaymentfee.com/api/v1/wallet/LEO/balance
- —The site advertises $0.02 per request with no API keys, no rate limits, and instant access on the Base network.https://lowpaymentfee.com
- —Documentation pages (docs, api, pricing, README) render only a 'Connect wallet' prompt with no additional content.https://lowpaymentfee.com/docs