Cardano Market Data API: Prices, Candles, and Order Books Across All 11 DEXes
Cardano Market Data API: Prices, Candles, and Order Books Across All 11 DEXes
Cardano's liquidity is fragmented by design: Minswap V1 and V2, SundaeSwap V1 and V3, WingRiders V1 and V2, VyFi, Splash, TeddySwap, MuesliSwap, and CSwap all hold pieces of it. Any product that shows a token price, a wallet, a portfolio tracker, a trading tool, an analytics dashboard, has to answer an awkward question: whose price? Indexing one DEX gives you a partial answer; indexing all of them yourself means decoding each protocol's on-chain activity and keeping that pipeline current forever.
The Nexus Market Data API does that aggregation for you. One REST surface, one X-Api-Key header, all 11 Cardano DEXes.
What you can query
Prices and history. Current ADA/USD market info, all tracked token prices or a single asset, a token's price across every DEX individually, top tokens by 24h volume or TVL, historical prices including price-at-timestamp lookups, OHLCV candles at 15m, 1h, 1D, and 1W resolutions for tokens and ADA/fiat, and an RSI(14) technical indicator. Token metadata, name, ticker, logo, decimals, comes from the same surface.
DEX activity. Liquidity pools with TVL, reserves, and fees (all pools, by DEX, by pair, or by token), real limit order books plus AMM-simulated order books per pool, open orders by DEX, owner, or token, buy and sell quotes, recent swaps globally or per token, and top-trader rankings for any token.
NFT markets. Tracked collections with statistics, floor prices, recent sales, and last-sale price per individual NFT, sourced from jpg.store activity.
Ecosystem extras. Registered dApp blueprints with persisted event querying, a leaderboard of wallets ranked by LP TVL, and an indexer sync-status endpoint so you can verify data freshness programmatically.
How it works
Plain REST over HTTPS. No proprietary SDK required, the HTTP client built into Node, the JDK, Python, Go, Rust, or your shell is enough:
curl "https://nexus.gerowallet.io/api/market/prices/top-volume" \
-H "X-Api-Key: nxs_your_api_key_here"
A machine-readable OpenAPI 3.1 spec is published at /v3/api-docs with a live playground at /docs, so you can generate a typed client for 50+ languages with one openapi-generator command. Behind the surface, requests fan out across multiple providers with automatic failover, and hot data is served from cache.
What teams build with it
Wallets and portfolio apps price user holdings accurately by aggregating across venues instead of trusting one pool's ratio.
Trading tools combine candles, RSI, order books, and per-DEX prices to power charts and route decisions.
Analytics products track pool TVL, swap flows, and top traders without running an indexer per DEX.
NFT platforms surface floor prices and sales history alongside token data from the same subscription.
If you need the data pushed rather than pulled, pair this add-on with WebSocket streaming for live price and swap events instead of polling.
Pricing
Market Data is a $19/month add-on on the Builder ($29), Growth ($79), and Scale ($199) tiers, and is included in Enterprise ($499). REST add-ons share your tier's unified request pool, one number to track, no compute-unit weighting.
Try it on your own tokens
The 7-day Builder trial includes the full API surface, so you can compare Nexus prices, candles, and order books against whatever you use today. Get your key at nexus.gerowallet.io and make your first call in minutes.