Crypto token data endpoint (JST) via x402 micropayment on Base for $0.02/request.
What it does
This endpoint at lowpaymentfee.com provides token data for JST (JUST token) as part of a broader suite of pay-per-request APIs. The platform offers endpoints across data & analytics, AI & machine learning, finance & Web3, and infrastructure categories, all priced uniformly at $0.02 per request. Payment is handled via the x402 protocol using USDC on the Base network — no API keys, no rate limits, and no subscriptions required.
The specific endpoint `/api/v1/tokens/JST` falls under the finance/crypto category and likely returns token-level data for the JST token (e.g., price, metadata, or market information), though the exact response schema is not documented. The x402 challenge confirms the endpoint is live, accepting POST requests and requiring a payment of 20,000 base units of USDC (i.e., $0.02) per call, settled to address `0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3` on Base.
Documentation is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no further content. There is no OpenAPI spec, no response examples, and no detailed description of what the endpoint returns. The platform appears functional but under-documented.
Capabilities
Use cases
- —Fetching current data or metadata for the JST (JUST) token
- —Integrating pay-per-call token data into trading bots or dashboards
- —Agent-driven crypto market data retrieval without API key management
Fit
Best for
- —Developers wanting frictionless, keyless access to token data
- —AI agents that can settle x402 micropayments on Base
- —Low-volume or sporadic crypto data lookups where subscriptions are overkill
Not for
- —High-frequency trading requiring sub-second latency guarantees (no SLA documented)
- —Users who need comprehensive historical token data or OHLCV charts
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/tokens/JST \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 challenge with clear pricing, but there is no documentation, no OpenAPI spec, no response schema, and no example responses. The docs pages are empty beyond a wallet-connect prompt. The listing is effectively a stub with confirmed liveness.
Warnings
- —No OpenAPI spec or response schema available — actual response format is unknown
- —All documentation pages (docs, API, pricing, README) render only 'Connect wallet' with no content
- —The exact data returned for /api/v1/tokens/JST is not documented; 'token data' is inferred from the URL pattern
- —No SLA, rate limit, or uptime guarantees documented
Citations
- —Endpoint returns HTTP 402 with x402 challenge requiring 20000 base units of USDC on Basehttps://lowpaymentfee.com/api/v1/tokens/JST
- —Platform advertises $0.02/request pricing with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —USDC asset address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/tokens/JST
- —Docs, API, pricing, and README pages show only 'Connect wallet'https://lowpaymentfee.com/docs