Query KAVA wallet balances via x402 micropayment on Base for $0.02 per request.
What it does
This endpoint at lowpaymentfee.com returns KAVA wallet balance data, accessible through the x402 payment protocol. It requires a per-call micropayment of $0.02 in USDC on the Base network — no API keys, no rate limits, and no sign-up required. The caller simply includes an X-PAYMENT header with a valid x402 payment proof, and the endpoint responds with JSON.
The provider operates a broader platform offering dozens of pay-per-call endpoints across categories including data analytics, AI/ML inference (sentiment analysis, summarization, classification, embeddings), finance and Web3 (price feeds, exchange rates, token quotes, gas estimates), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02-per-request pricing model settled in USDC on Base.
Documentation beyond the landing page is sparse — the /docs, /pricing, /api, and /README pages all resolve to a minimal "Connect wallet" prompt with no further technical detail. There is no OpenAPI spec, no request/response schema documentation, and no usage examples available from the crawled material. The endpoint is confirmed live (returns a proper 402 x402 challenge), but the actual response format for a paid request is unknown.
Capabilities
Use cases
- —Checking KAVA token balances for a given wallet address
- —Integrating KAVA balance lookups into portfolio trackers or dashboards
- —Automated monitoring of KAVA wallet holdings by AI agents
Fit
Best for
- —Agents or apps needing on-demand KAVA balance queries without API key management
- —Developers who prefer pay-per-call pricing over subscription models
- —Quick prototyping where frictionless access matters more than detailed documentation
Not for
- —High-volume batch queries where per-request costs add up quickly
- —Use cases requiring detailed transaction history or full blockchain indexing
- —Users who need comprehensive API documentation and SDKs before integrating
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wallet/KAVA/balance \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_proof>" \
-d '{"address": "kava1..."}'Example
Request
{
"address": "kava1exampleaddress123"
}Endpoint
Quality
The endpoint is confirmed live via a valid 402 x402 challenge, and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI spec, no documented request/response schema, no usage examples, and the docs pages are all empty stubs. The request body and response format are entirely inferred.
Warnings
- —No API documentation available — /docs, /pricing, /api, and /README all return only a 'Connect wallet' stub.
- —No OpenAPI or JSON schema provided; request and response formats are unknown and inferred.
- —The example_request_json is speculative — the actual required fields are undocumented.
- —Provider offers many endpoints across diverse categories (AI, finance, geo, etc.) with identical $0.02 pricing; unclear what backing services power these.
Citations
- —Endpoint returns a valid x402 402 challenge with maxAmountRequired of 20000 base units (USDC, 6 decimals = $0.02) on Base networkhttps://lowpaymentfee.com/api/v1/wallet/KAVA/balance
- —Provider advertises $0.02 per request, no API keys, no rate limits, instant access, Base networkhttps://lowpaymentfee.com
- —USDC asset contract on Base: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/wallet/KAVA/balance
- —Docs, pricing, API, and README pages all resolve to minimal 'Connect wallet' contenthttps://lowpaymentfee.com/docs