Query EOS wallet balances via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns EOS wallet balance data, accessible through the x402 payment protocol. It accepts POST requests and charges $0.02 per call (20,000 base units of USDC on the Base network, where USDC has 6 decimals). No API keys or rate limits are required — callers simply attach an X-PAYMENT header with a valid x402 payment proof to receive a JSON response.
The endpoint is part of a broader suite of pay-per-call APIs offered by lowpaymentfee.com spanning data analytics, AI/ML inference, finance/Web3 data, and utility services, all priced uniformly at $0.02 per request. Payment settles on the Base L2 network using USDC (contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913) to the recipient address 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.
Documentation is extremely sparse — the /docs, /pricing, and /README pages all resolve to a wallet-connect prompt with no further content. There is no OpenAPI schema, no request/response examples, and no description of what parameters the endpoint accepts or what fields the response contains. The endpoint is confirmed live (returns a proper 402 challenge), but the actual behavior and data source behind the EOS balance lookup are undocumented.
Capabilities
Use cases
- —Checking EOS wallet balances programmatically without managing API keys
- —Integrating EOS balance lookups into agent workflows that support x402 payments
- —Building portfolio trackers that need on-demand EOS balance data
Fit
Best for
- —Agents or bots that already support x402 payment flows
- —Low-volume, on-demand EOS balance queries
- —Developers who want keyless API access paid in USDC on Base
Not for
- —High-frequency trading or bulk balance scanning (no documented rate limits but $0.02/call adds up)
- —Users who need detailed EOS account data beyond balance (no documented fields)
- —Anyone needing well-documented, production-grade APIs with SLAs
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wallet/EOS/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, confirming it exists and accepts payments. However, there is zero documentation on request parameters, response schema, or data sources. The docs, pricing, and README pages are all empty wallet-connect stubs. Without any examples or schema, this is effectively a stub listing.
Warnings
- —No documentation available — /docs, /pricing, /README all return only a wallet-connect prompt with no content
- —No OpenAPI schema or request/response examples provided
- —Actual data source for EOS balance lookups is unknown
- —No information on what request body parameters are accepted
- —The broader site lists many API categories but none have visible documentation
Citations
- —Endpoint returns a valid x402 402 challenge with USDC on Base networkhttps://lowpaymentfee.com/api/v1/wallet/EOS/balance
- —Price is $0.02 per request, maxAmountRequired is 20000 base units of USDC (6 decimals)https://lowpaymentfee.com/api/v1/wallet/EOS/balance
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/wallet/EOS/balance
- —Site advertises $0.02/request pricing with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —Documentation pages (/docs, /pricing, /README) contain only a wallet-connect prompthttps://lowpaymentfee.com/docs