OHLCV candlestick data for OP (Optimism) token, paid per-request via x402 on Base.
What it does
This endpoint provides OHLCV (Open, High, Low, Close, Volume) market data for the OP (Optimism) token. It is one of many endpoints offered by lowpaymentfee.com, a platform that exposes a variety of data, AI, finance, and utility APIs behind x402 micropayments on the Base network.
The endpoint is accessed via HTTP POST at `/api/v1/crypto/OP/ohlcv` and costs $0.02 per request, paid in USDC on Base (contract 0x8335…2913). Payment is handled through the x402 protocol — no API keys, accounts, or rate limits are required. The x402 challenge confirms the endpoint is live and accepts exact-scheme payments with a maximum amount of 20,000 base units (i.e., $0.02 USDC at 6 decimals).
Documentation beyond the landing page is extremely sparse — the docs, API, pricing, and README pages all render only a "Connect wallet" prompt with no additional technical detail. The request body schema and response format are not documented, so the exact parameters (e.g., time range, interval/granularity) and response fields must be inferred or discovered experimentally. The provider hosts a broad catalog of similarly priced endpoints covering analytics, AI/ML, finance, and utility categories.
Capabilities
Use cases
- —Fetching historical candlestick data for the OP token for charting or analysis
- —Feeding OP OHLCV data into trading bots or algorithmic strategies
- —Building dashboards that display Optimism token price movements
- —Backtesting trading strategies against OP price history
Fit
Best for
- —Agents or apps needing on-demand OP market data without API key management
- —Low-volume or sporadic crypto data queries where per-call pricing is economical
- —Developers prototyping crypto dashboards who want instant access
Not for
- —High-frequency trading requiring sub-second latency and bulk historical downloads
- —Users who need comprehensive multi-asset OHLCV data across hundreds of tokens in a single call
- —Anyone requiring detailed API documentation or guaranteed SLAs before integration
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/crypto/OP/ohlcv \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402_payment_header>" \
-d '{}'Endpoint
Quality
The x402 challenge is live and pricing is clear ($0.02 USDC on Base), but there is no documentation for request parameters or response schema. Docs pages return only a wallet-connect prompt. The endpoint's actual data content must be inferred from the URL path alone.
Warnings
- —No API documentation available — docs, pricing, and README pages all show only 'Connect wallet' with no technical content.
- —Request body schema and response format are completely undocumented; parameters like time range and interval are unknown.
- —The specific data source and freshness/coverage of OHLCV data for OP token is unverified.
Citations
- —The endpoint costs $0.02 per request (maxAmountRequired 20000 base units USDC, 6 decimals) on Base network.https://lowpaymentfee.com
- —The platform advertises no API keys, no rate limits, and instant access at $0.02/request.https://lowpaymentfee.com
- —USDC asset contract on Base is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913.https://lowpaymentfee.com/api/v1/crypto/OP/ohlcv