OHLCV candlestick data for ANKR token, paid per-request via x402 on Base.
What it does
This endpoint at lowpaymentfee.com provides OHLCV (Open, High, Low, Close, Volume) market data for the ANKR cryptocurrency token. It is part of a broader suite of finance and crypto APIs offered by the same provider, all gated behind the x402 payment protocol on the Base network.
Each request costs $0.02 in USDC (the x402 challenge advertises a maxAmountRequired of 20,000 base units of USDC, which has 6 decimals, equaling $0.02). Payment is made inline via the X-PAYMENT header — no API keys, accounts, or rate limits are required. The endpoint accepts POST requests and returns JSON.
Documentation beyond the landing page is extremely sparse. The /docs, /api, /pricing, and /README pages all returned only a "Connect wallet" prompt with no substantive content. There is no OpenAPI schema, no request/response examples, and no description of accepted parameters (e.g., time range, interval, pagination). The endpoint is confirmed live — it returns a well-formed x402 402 challenge — but the lack of documentation makes it difficult to know exactly what request body to send or what response shape to expect.
Capabilities
Use cases
- —Fetching historical OHLCV candlestick data for ANKR token
- —Building trading dashboards or charting tools that need ANKR price history
- —Backtesting trading strategies using ANKR price data
- —Programmatic agents purchasing crypto market data on-demand without API keys
Fit
Best for
- —Agents or apps needing pay-per-call ANKR market data with no signup
- —Developers who want to avoid API key management and subscriptions
- —x402-compatible clients on the Base network
Not for
- —Users needing free or bulk historical data downloads
- —Applications requiring WebSocket streaming or real-time tick data
- —Users who need comprehensive documentation or guaranteed SLA
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/crypto/ANKR/ohlcv \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_token>" \
-d '{}'Endpoint
Quality
The endpoint is confirmed live via a valid x402 402 challenge, and pricing is clear ($0.02 USDC per request). However, there is no OpenAPI schema, no request/response examples, and all documentation pages are empty stubs. The exact parameters and response format must be guessed.
Warnings
- —No documentation available — /docs, /api, /pricing, and /README all return only a wallet-connect prompt with no content.
- —No OpenAPI or JSON schema describing request parameters or response format.
- —Request body structure and accepted query parameters (interval, date range, etc.) are unknown.
- —Response shape is entirely undocumented — example_request_json and example_response_json cannot be provided.
Citations
- —The endpoint returns a valid x402 challenge with maxAmountRequired of 20000 base units of USDC on Base network.https://lowpaymentfee.com/api/v1/crypto/ANKR/ohlcv
- —All APIs on the platform cost $0.02 per request with no API keys, no rate limits, and instant access on Base network.https://lowpaymentfee.com
- —USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 (6 decimals), so 20000 base units = $0.02.https://lowpaymentfee.com/api/v1/crypto/ANKR/ohlcv