Query LUNC wallet balances via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns wallet balance information for Terra Classic (LUNC) tokens. It is part of a broader suite of pay-per-call APIs offered by the same provider, spanning data analytics, AI/ML inference, finance/Web3, and utility services. All endpoints use the x402 payment protocol, settling in USDC on the Base network.
The specific endpoint `/api/v1/wallet/LUNC/balance` accepts POST requests and returns JSON. The x402 challenge advertises a maximum cost of 20,000 base units of USDC (0x8335…2913 on Base), which equals $0.02 per request (USDC uses 6 decimals). No API keys are required; payment is handled entirely through the X-PAYMENT header. The provider advertises no rate limits and instant access.
Documentation is extremely sparse — the /docs, /pricing, /api, and /README pages all render only a "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema, and no usage examples available from the crawl. The endpoint is confirmed live (returns a proper 402 challenge), but the actual response format and accepted request parameters are unknown.
Capabilities
Use cases
- —Checking LUNC token balances for a given wallet address
- —Integrating LUNC balance data into portfolio tracking dashboards
- —Automated monitoring of Terra Classic wallet holdings
Fit
Best for
- —Agents or bots needing on-demand LUNC balance checks without API key management
- —Developers wanting low-cost, pay-per-call crypto balance queries
- —x402-compatible clients on the Base network
Not for
- —Bulk or high-frequency balance polling across many chains (only LUNC supported here)
- —Users who need detailed transaction history or full blockchain indexing
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wallet/LUNC/balance \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{"address": "terra1..."}'Example
Request
{
"address": "terra1exampleaddress123"
}Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing ($0.02 USDC on Base). However, there is no OpenAPI spec, no documentation beyond a landing page listing, no response schema, and no examples. The actual request body format and response structure are entirely unknown and had to be guessed.
Warnings
- —No OpenAPI or schema documentation available — request/response formats are unknown
- —All documentation pages (/docs, /pricing, /api, /README) render only 'Connect wallet' with no content
- —Example request JSON is inferred/guessed; actual required fields are unconfirmed
- —Provider offers many endpoints but none have published technical docs
Citations
- —The endpoint returns a 402 challenge with maxAmountRequired of 20000 base units of USDC on Base networkhttps://lowpaymentfee.com/api/v1/wallet/LUNC/balance
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/wallet/LUNC/balance
- —Provider advertises $0.02 per request, no API keys, no rate limits, instant access on Base networkhttps://lowpaymentfee.com