OHLCV candlestick data for CRO (Cronos) via pay-per-request x402 on Base.
What it does
This endpoint provides OHLCV (Open, High, Low, Close, Volume) candlestick data for the CRO (Cronos) cryptocurrency token. It is part of the lowpaymentfee.com platform, which offers a suite of data, analytics, AI, finance, and utility APIs all gated behind the x402 payment protocol on the Base network.
Each request costs $0.02 in USDC (USD Coin) on Base, settled via the x402 exact-payment scheme. There are no API keys, no rate limits, and no subscriptions — callers simply attach an X-PAYMENT header with a valid payment proof for each call. The endpoint accepts POST requests and returns JSON.
The broader lowpaymentfee.com platform lists endpoints across several categories including crypto market data (price feeds, exchange rates, token quotes, gas estimates), AI/ML (sentiment analysis, text summarization, classification, embeddings), data analytics (metrics, reports, insights, data export), and infrastructure utilities (geocoding, validation, conversion, generation). All endpoints share the same $0.02/request pricing model. Documentation beyond the landing page is sparse — the /docs, /pricing, and /README pages all resolve to a minimal "Connect wallet" prompt with no further technical detail.
Capabilities
Use cases
- —Fetching historical OHLCV candlestick data for CRO to build trading charts
- —Programmatic access to CRO price data for backtesting trading strategies
- —Integrating CRO market data into dashboards or portfolio trackers
- —AI agents autonomously purchasing crypto market data without API keys
Fit
Best for
- —Developers needing quick, keyless access to CRO OHLCV data
- —AI agents that can settle micropayments on Base via x402
- —Projects that want pay-per-use crypto data without subscriptions
Not for
- —High-frequency trading requiring sub-millisecond latency and bulk historical downloads
- —Users who need free or API-key-based access without crypto wallet integration
- —Comprehensive multi-exchange aggregated OHLCV data across hundreds of tokens
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/crypto/CRO/ohlcv \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-proof>" \
-d '{}'Example
Request
{}Endpoint
Quality
The endpoint is live (returns a valid 402 x402 challenge) and pricing is clear ($0.02 USDC on Base). However, there is no OpenAPI schema, no documentation of request parameters or response format, and no example responses. The /docs, /pricing, and /README pages are all empty stubs. The OHLCV response structure and supported query parameters (timeframe, date range, etc.) are entirely unknown.
Warnings
- —No documentation available — /docs, /pricing, /README all return only a 'Connect wallet' stub
- —Request parameters for the OHLCV endpoint are unknown (timeframe, date range, etc.)
- —Response schema is undocumented; actual data format cannot be verified
- —The platform lists many endpoint categories but none have detailed docs, raising questions about completeness
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units of USDC on Base (= $0.02)https://lowpaymentfee.com/api/v1/crypto/CRO/ohlcv
- —All endpoints on the platform cost $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The platform offers endpoints across Data & Analytics, AI & Machine Learning, Finance & Web3, and Infrastructure categorieshttps://lowpaymentfee.com
- —USDC contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913https://lowpaymentfee.com/api/v1/crypto/CRO/ohlcv