OHLCV candlestick data for FXS (Frax Share) via pay-per-request x402 on Base.
What it does
This endpoint provides OHLCV (Open, High, Low, Close, Volume) market data for the FXS (Frax Share) 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, contract 0x8335…2913). Payment is handled inline via the x402 protocol — no API keys, no accounts, no rate limits. The caller includes an X-PAYMENT header with a signed payment facilitator token, and the endpoint returns the requested data. The x402 challenge confirms the endpoint is live, accepting POST requests, and settling payments to address 0x1A2B…85F3 with a maximum timeout of 300 seconds.
The broader lowpaymentfee.com platform lists endpoints across categories including crypto quotes, gas estimates, exchange rates, price feeds, sentiment analysis, text summarization, classification, embeddings, geocoding, and more — all at the same $0.02-per-request price point. Documentation beyond the landing page is sparse; the /docs, /api, /pricing, and /README pages all render only a "Connect wallet" prompt with no additional technical detail. No OpenAPI schema, request/response examples, or parameter documentation was found for this specific OHLCV endpoint.
Capabilities
Use cases
- —Fetching historical OHLCV candlestick data for FXS to power trading bots or dashboards
- —Integrating FXS price history into portfolio analytics without managing API keys
- —Agent-driven market analysis where per-call crypto payment is preferred over subscriptions
Fit
Best for
- —Developers or agents needing FXS OHLCV data with zero-signup access
- —Pay-as-you-go crypto market data consumption on Base
- —Autonomous agents that can settle x402 payments in USDC
Not for
- —Users needing detailed API documentation or guaranteed SLAs before integrating
- —High-frequency trading requiring sub-cent per-request costs or bulk pricing
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/crypto/FXS/ohlcv \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-token>"Endpoint
Quality
The x402 challenge confirms the endpoint is live and priced at $0.02 USDC on Base. However, there is no OpenAPI schema, no request/response examples, no parameter documentation, and the docs pages are empty stubs. The endpoint's actual behavior (supported query parameters, response format, time intervals) must be guessed entirely.
Warnings
- —No API documentation found — /docs, /api, /pricing, and /README all return only a 'Connect wallet' prompt with no technical content.
- —No OpenAPI or JSON schema available for request parameters or response format.
- —Request body structure and supported query parameters (e.g., time range, interval) are unknown.
- —Response format is undocumented; example_request_json and example_response_json cannot be provided.
Citations
- —The endpoint returns a 402 challenge accepting USDC on Base with maxAmountRequired of 20000 base units ($0.02).https://lowpaymentfee.com/api/v1/crypto/FXS/ohlcv
- —All endpoints on the platform are priced at $0.02 per request with no API keys, no rate limits, and instant access on the Base network.https://lowpaymentfee.com
- —USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 and payment is sent to 0x1A2B13E97f5F837C8F9FA1F95a1484B7C70d85F3.https://lowpaymentfee.com/api/v1/crypto/FXS/ohlcv