Comparison·Updated October 15, 2026

TapTools API Alternative: Cardano Market Data After the Wind-Down

On 2 June 2026 TapTools announced that it would wind down operations over the following two weeks, citing the departure of its founders and rising infrastructure costs (The Block). For four years it had been the default place Cardano developers went for token prices, charts and NFT data. As of October 2026 its API host no longer resolves and the main site shows only an "Under construction" notice.

If your wallet, dashboard, bot or tax tool called the TapTools API, you have probably already patched around the gap. This guide is for replacing that patch with something you can run in production: what the realistic options are, what each one actually covers, and how TapTools-style requests map onto a supported API.

TL;DR

If you need the same kind of data TapTools served (token prices, candles, market cap, volume, pools and NFT sales) from a commercially supported API, Nexus Market Data is the closest replacement. It indexes 11 Cardano DEXes and adds order books, a DEX aggregator, FIFO wallet P&L and WebSocket streaming on the same subscription. If you only need an ADA reference price, an oracle feed is enough. If you need a one-off analysis rather than a live feed, a SQL warehouse is cheaper.

What TapTools gave you, and why it is hard to replace

TapTools did something unglamorous and difficult: it watched every major Cardano DEX, turned raw swaps and pool states into prices, and kept doing it as each DEX shipped a new contract version. That is the part teams underestimate when they plan to "just index it ourselves".

Three things make Cardano market data harder than it looks:

1. Every DEX is its own contract family. Minswap V1 and V2, SundaeSwap V1 and V3, WingRiders V1 and V2, Splash, VyFi and others each encode pools, orders and fees differently. A price feed has to decode all of them and keep up with upgrades.

2. A price is a decision, not a number. The same token trades in several pools at different depths. You need a rule for which pool or which weighted average represents "the" price, and a rule for ignoring thin pools that are easy to move.

3. Candles need history. Live prices are only half the job. Charts, P&L and tax reports need a reliable history of open, high, low, close and volume, backfilled and kept consistent.

Any replacement should be judged on those three points, not on whether it returns a number for ADA.

What to check before you pick a replacement

• DEX coverage. List the DEXes your users actually trade on and check each one by name.

• Price method. Ask whether the price is last trade, pool spot, or volume or TVL weighted, and whether you can see the per-DEX breakdown.

• History depth and resolution. Confirm the candle resolutions and how far back the history goes for the tokens you care about.

• Delivery. Polling REST is fine for dashboards. Trading interfaces and alerts usually want a push stream.

• Who answers when it breaks. A community dataset with no support path was acceptable when TapTools existed as the fallback. It is less acceptable now.

• Price predictability. Credit or compute-unit billing makes a chart-heavy app hard to budget. Flat tiers are easier to forecast.

The realistic alternatives

Nexus Market Data

Nexus is the full-stack data and transaction API for UTXO chains, built by A.D. Labs, the team behind GeroWallet. The Market Data add-on covers 11 Cardano DEXes, including Minswap, SundaeSwap, WingRiders, Splash, VyFi, TeddySwap, MuesliSwap and CSwap. It returns per-token prices in ADA and USD with a volume weighted price, TVL, 24 hour volume, price change over 1 hour, 24 hours, 7 days and 30 days, market cap, fully diluted value and holder count. It also serves OHLCV candles, pool reserves, order books, recent swaps, top traders per token, and NFT collection floors and sales.

The same subscription can add FIFO wallet P&L, a DEX aggregator with swap quotes and transaction building, and WebSocket streaming, so the pieces teams used to stitch around TapTools sit behind one API surface. The same account also covers Bitcoin and Midnight. Cardano has the deepest coverage.

Pyth

Pyth gives Cardano projects oracle reference prices, and has offered a free one-year Pro key to Cardano projects since June 2026. It is the right tool when a smart contract needs a signed price for a major asset. It does not index Cardano DEX pools, so long-tail native tokens, pool data and NFT sales are out of scope.

Dune

Dune added Cardano tables in April 2026. It is excellent for SQL research and dashboards at the ledger level. It does not currently provide decoded DEX trade tables for Cardano, so you would be reconstructing prices yourself, and it is a query engine rather than a low-latency API for an app.

Cardanoscan and other explorers

Explorer APIs are useful for chain lookups and some token fields. They are not built as a multi-DEX market feed, and their published plans top out at small scale.

DexHunter

DexHunter runs an aggregator with its own quotes and charts and offers a partner API on undisclosed terms. If you are already a DexHunter partner it is worth asking about. It is not a public, self-serve market data product.

Building your own

Teams with a dedicated data function can index DEX contracts directly from a node using open tools such as Oura or Kupo. Budget for decoding every DEX version, choosing a pricing rule, backfilling history and running it all around the clock. This is what TapTools found expensive, by its own account.

Migration map: TapTools-style requests to Nexus

The table maps the kinds of requests most TapTools integrations made onto Nexus endpoints. All Nexus requests go to https://nexus.gerowallet.io with your key in the X-Api-Key header. The market endpoints sit behind the Market Data add-on.

A first call looks like this:

curl -H "X-Api-Key: $NEXUS_API_KEY" \
"https://nexus.gerowallet.io/api/market/prices/$ASSET_ID"

The response carries priceAda, priceUsd, weightedPriceAda, tvl, volume24h, priceChange24h, marketCap, fdv and holders, among other fields. Field names differ from what TapTools returned, so plan a small mapping layer rather than a find and replace.

If you polled TapTools every few seconds for a trading screen, consider the WebSocket instead. Nexus pushes price updates every 10 seconds on /topic/market/prices and per token on /topic/market/prices/{assetId}, which removes most of the polling traffic. The Cardano WebSocket API guide walks through the connection.

What Nexus does not do

Being specific here saves you a surprise later:

• It is a paid service. Builder is $29 a month after a 7-day trial, and Market Data is a paid add-on on top.

• There is no free-text token search endpoint. You list tracked tokens with GET /api/market/tokens and look up by asset ID.

• Holder counts are returned per token, but there is no endpoint that lists every holder address.

• Market data covers Cardano. Bitcoin and Midnight are live on Nexus for chain data and transactions, not DEX market data.

Pricing

Nexus uses flat monthly tiers. Builder is $29 a month (7-day trial, 2M requests), Growth $79, Scale $199 and Enterprise $499. Market Data is $19 a month as an add-on, so the smallest production setup for a TapTools replacement is $48 a month. Wallet Analytics is $15 and WebSocket packages start at $29. Enterprise bundles every add-on and unlimited WebSocket streaming. Every price is on the pricing page before you sign up, with no credit multipliers.

Common questions

Is TapTools coming back?
TapTools said in June 2026 that it was open to acquisition or other arrangements. As of 15 October 2026 its API host does not resolve and its site shows "Under construction". Build on the assumption that the old API will not return, and treat any relaunch as a bonus.

Can I keep my TapTools response format?
Not directly. The concepts map closely, but field names and some units differ, so write a thin adapter in your backend. That also makes the next vendor change, if there ever is one, a one-file job.

Which DEXes does Nexus price?
Eleven Cardano DEXes, including Minswap V1 and V2, SundaeSwap V1 and V3, WingRiders V1 and V2, Splash, VyFi, TeddySwap, MuesliSwap and CSwap. Check the Market Data guide for the current list before you rely on a specific venue.

Do I need a Cardano node or chain data provider as well?
Not for market data. If your app also reads UTxOs, builds transactions or submits them, those are on the same Nexus account. The Cardano API providers comparison covers the chain data side.

Next step

Losing a data vendor you did not choose to leave is a good moment to put the replacement behind an adapter and test it against real traffic before you depend on it. List the TapTools calls your code made, map them with the table above, and run the new feed beside your current workaround for a week.

To do that now, start the 7-day Builder trial, add Market Data, and follow the Quick Start.