Check VET (VeChain) wallet balances via x402 micropayment — $0.02 per request on Base.
What it does
This endpoint at lowpaymentfee.com returns VeChain (VET) wallet balance data, accessed through the x402 payment protocol. 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 infrastructure utilities. All endpoints on the platform share a uniform $0.02-per-request pricing model settled in USDC on the Base network.
The specific endpoint `/api/v1/wallet/VET/balance` accepts POST requests and returns JSON. Payment is handled via the x402 exact-payment scheme: callers attach an `X-PAYMENT` header with a signed USDC payment of up to 20,000 base units (i.e., $0.02, since USDC uses 6 decimals) to the provider's address on Base. No API keys, subscriptions, or rate limits are advertised — access is purely pay-per-call.
Documentation is extremely sparse. The provider's docs, pricing, and API 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 crawled material. The endpoint is confirmed live (returns a proper 402 challenge), but the actual request format (e.g., whether a wallet address is passed in the POST body or as a query parameter) and the response schema are unknown.
Capabilities
Use cases
- —Querying VeChain (VET) wallet balances programmatically
- —Integrating VET balance checks into portfolio trackers or dashboards
- —Automated agents checking on-chain VET holdings before executing trades
Fit
Best for
- —Developers needing quick, keyless VET balance lookups
- —AI agents with x402-compatible wallets on Base
- —Pay-as-you-go crypto data queries without subscription overhead
Not for
- —Bulk or high-volume balance scanning (no documented batch support)
- —Users who need detailed VET transaction history or token transfer data
- —Anyone without a Base-network USDC wallet for x402 payments
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/wallet/VET/balance \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-signed-payment-header>" \
-d '{"address": "0xYourVETAddress"}'Example
Request
{
"address": "0x1234567890abcdef1234567890abcdef12345678"
}Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, documentation is essentially nonexistent — no OpenAPI spec, no request/response schemas, no examples. The request body format and response structure are entirely inferred. This is effectively a stub listing.
Warnings
- —No documentation available — docs, pricing, and API pages all render only 'Connect wallet' with no technical content.
- —Request body schema is unknown; the example_request_json is speculative.
- —Response schema is completely unknown; no example_response_json can be provided.
- —No OpenAPI or machine-readable spec found.
- —The broader platform lists many endpoints but none have documented schemas.
Citations
- —The endpoint returns a 402 challenge with x402Version 1, accepting USDC on Base with maxAmountRequired of 20000 base units.https://lowpaymentfee.com/api/v1/wallet/VET/balance
- —All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on the Base network.https://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 is the canonical USDC contract on Base.https://lowpaymentfee.com/api/v1/wallet/VET/balance