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 a specific account (account ID 105) via an x402-gated API call. Payment is settled in USDC on the Base network using the x402 "exact" scheme. The cost per request is 20,000 base units of USDC (6 decimals), which equals $0.02 USD.
The provider lowpaymentfee.com hosts a broader suite of pay-per-call APIs spanning data & analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance & Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints are listed at $0.02 per request with no API keys, no rate limits, and no minimum commitments required — payment is handled entirely through the x402 protocol.
The specific endpoint probed (`/api/v1/accounts/105/balance`) is described only as "Premium API Access" with no further documentation on request parameters or response schema. The docs, pricing, and API pages on the site all render only a "Connect wallet" prompt with no additional technical content. Without an OpenAPI spec, request/response examples, or detailed documentation, the exact input format and output structure remain unknown.
Capabilities
Use cases
- —Querying account balance data with per-request USDC micropayments
- —Integrating pay-as-you-go balance lookups into agent workflows
- —Accessing financial account information without API key registration
Fit
Best for
- —Developers wanting zero-signup, pay-per-call account balance queries
- —AI agents that can settle x402 payments in USDC on Base
- —Projects needing low-cost, on-demand financial data access
Not for
- —Users who need detailed API documentation or OpenAPI specs before integrating
- —High-volume batch queries where per-request pricing may add up
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/accounts/105/balance \
-H "X-PAYMENT: <x402-payment-token>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live (returns 402 with a valid x402 challenge), but there is no OpenAPI spec, no request/response schema, no documentation beyond a generic "Premium API Access" label, and all doc pages render only a wallet-connect prompt. The purpose and output of this specific endpoint are unclear.
Warnings
- —No OpenAPI or schema documentation available for this endpoint
- —All documentation pages (docs, pricing, API, README) render only a 'Connect wallet' prompt with no technical content
- —The endpoint path suggests a hardcoded account ID (105); unclear if this is parameterizable or what data is returned
- —Response format and fields are entirely unknown
Citations
- —The endpoint returns HTTP 402 with an x402 challenge requiring 20,000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/accounts/105/balance
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/accounts/105/balance
- —All endpoints are priced at $0.02 per request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com
- —The provider offers APIs across data & analytics, AI/ML, finance & Web3, and infrastructure categorieshttps://lowpaymentfee.com