Get the current price of JST token via a pay-per-call x402 endpoint on Base.
What it does
This endpoint returns the current price of the JST (JUST) token. It is part of a broader suite of pay-per-request APIs hosted at lowpaymentfee.com, which covers data analytics, AI/ML inference, finance/Web3 data, and utility services. All endpoints use the x402 payment protocol, settling in USDC on the Base network.
The specific endpoint `/api/v1/tokens/JST/price` accepts POST requests and returns JSON. Each call costs $0.02 in USDC (maxAmountRequired of 20,000 base units with 6 decimals). Payment is made via the x402 `X-PAYMENT` header using the "exact" scheme. No API keys or accounts are required — access is granted per-request upon payment. The provider advertises no rate limits and instant access.
The site lists many other endpoints across categories like sentiment analysis, text summarization, exchange rates, gas estimates, and geocoding, all at the same $0.02/request price point. Documentation pages beyond the landing page appear to require a wallet connection and contain no additional content. There is no OpenAPI schema or detailed request/response documentation available, so the exact response format must be inferred from the endpoint's purpose (token price data).
Capabilities
Use cases
- —Fetching the current market price of the JST (JUST) token programmatically
- —Building trading bots or dashboards that need on-demand token pricing
- —Agents that need real-time crypto price data without managing API keys
Fit
Best for
- —AI agents needing keyless, pay-per-call token price data
- —Developers who want to avoid API key management and subscriptions
- —Low-volume or sporadic crypto price lookups at $0.02 per call
Not for
- —High-frequency trading requiring sub-second latency and bulk pricing
- —Users who need historical price data or OHLCV candles (not documented)
- —Anyone needing price data for free or at sub-cent costs
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/tokens/JST/price \
-H "X-PAYMENT: <x402-payment-header>" \
-H "Content-Type: application/json"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge. However, there is no OpenAPI schema, no documented request/response format, and all docs pages beyond the landing page are empty (wallet-gated). The exact response structure is unknown.
Warnings
- —No OpenAPI or request/response schema available — response format is undocumented
- —Documentation pages (/docs, /api, /pricing, /README) all appear empty or wallet-gated
- —The broader site lists many endpoints across very different domains (AI, geocoding, finance) at identical pricing, which may indicate a generic wrapper rather than a specialized data provider
- —Exact data source for JST token price is unknown
Citations
- —The endpoint returns HTTP 402 with x402 challenge requiring USDC payment on Base networkhttps://lowpaymentfee.com/api/v1/tokens/JST/price
- —maxAmountRequired is 20000 base units of USDC (asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913), which equals $0.02https://lowpaymentfee.com/api/v1/tokens/JST/price
- —All endpoints priced at $0.02/request with no API keys, no rate limits, and instant accesshttps://lowpaymentfee.com