Get the current price of FXS (Frax Share) via a pay-per-call x402 endpoint on Base.
What it does
This endpoint returns the current price of the FXS (Frax Share) token. It is part of the lowpaymentfee.com platform, which offers a broad suite of pay-per-request APIs spanning data analytics, AI/ML inference, finance/Web3, and utility services — all gated via the x402 payment protocol on the Base network.
The endpoint accepts POST requests and returns JSON. Each call costs $0.02 in USDC (USD Coin) on Base, settled directly on-chain with no API keys, subscriptions, or rate limits required. The x402 challenge confirms the asset is USDC at contract 0x8335…2913 on Base, with a maxAmountRequired of 20000 base units (i.e., $0.02 given USDC's 6 decimals).
The broader lowpaymentfee.com platform advertises additional endpoints for token quotes, exchange rates, gas estimates, sentiment analysis, text summarization, embeddings, geocoding, and more — all at the same $0.02/request price point. Documentation pages exist but appear to require a wallet connection to view, so detailed request/response schemas are not available from the crawl. The specific data source for FXS pricing is not documented.
Capabilities
Use cases
- —Fetching the current FXS (Frax Share) token price for portfolio tracking or trading bots
- —Integrating real-time token pricing into DeFi dashboards without managing API keys
- —Agent-driven price lookups where per-call micropayments replace subscription billing
Fit
Best for
- —Developers needing keyless, pay-per-call crypto price data
- —AI agents that can settle x402 payments autonomously on Base
- —Low-volume or bursty workloads where subscription APIs are wasteful
Not for
- —High-frequency trading requiring sub-second latency guarantees (no SLA documented)
- —Users who need historical price data or OHLCV candles (only current price indicated)
- —Anyone without a Base-compatible USDC wallet
Quick start
curl -X POST https://lowpaymentfee.com/api/v1/tokens/FXS/price \
-H "Content-Type: application/json" \
-H "X-PAYMENT: <x402-payment-header>"Endpoint
Quality
The endpoint is live and returns a valid x402 402 challenge with clear pricing. However, no request/response schema, no documentation beyond the landing page, and no example payloads are available. The docs, pricing, and API pages all just show 'Connect wallet' with no substantive content. The actual data source and response format for FXS price are unknown.
Warnings
- —No request or response schema available — the output format is entirely undocumented.
- —Documentation pages require wallet connection and contain no readable content.
- —The data source for FXS token pricing is not disclosed; accuracy and freshness are unknown.
- —No SLA, uptime guarantees, or rate limit information documented.
Citations
- —The endpoint returns a 402 x402 challenge with maxAmountRequired of 20000 base units in USDC on Basehttps://lowpaymentfee.com/api/v1/tokens/FXS/price
- —All APIs on the platform cost $0.02 per request with no API keys, no rate limits, and instant access on Base networkhttps://lowpaymentfee.com
- —The USDC asset contract is 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Basehttps://lowpaymentfee.com/api/v1/tokens/FXS/price