Resources
FAQ
Please find the list of frequently asked questions below.
0. Getting started
Q) Is there a free tier?
Yes. Every account starts on a Free Trial with a limited monthly request quota, suitable for evaluation and personal projects. Paid plans (Starter, Pro, Pro+) raise the quota and unlock advanced endpoints. See Pricing.
Q) How do I get an API key?
Sign up at datamaxiplus.com/login. A key is generated automatically on signup and visible on your account page. Step-by-step walkthrough: How to get an API key.
Q) What's the rate limit?
Rate limits are per-plan. See Rate Limits for the full table. The API returns HTTP 429 when you exceed your quota, with a Retry-After header indicating when to retry.
Q) Do you support <exchange>?
Live coverage list is exposed via the API itself — hit /api/v1/cex/candle/exchanges (or the equivalent for the dataset you care about) to see what's currently supported. New venues are added regularly; if you need one that isn't listed, email business@datamaxiplus.com.
Q) How do I cancel my subscription?
Go to your account page and downgrade or cancel. Cancellation takes effect at the end of your current billing period; you keep access until then. Payments are non-refundable — see the Payments & Billing section below.
1. Arbitrage Strategies & API Access
Q) How can I build an arbitrage bot using the API?
API support is only available in the Pro+ plan, providing access to expert traders and bot developers.
Since the Pro+ Plan is not yet open, you can join the waiting list to receive updates via email here.
For more details, visit https://datamaxiplus.com/maxi-api.
Q) When will I get my API key?
Upon signing up, you will automatically receive an API key, allowing you to use the API service within the limited free tier.
If you require access beyond these limits, you can upgrade to the Pro+ plan. You can check your issued API key on your account page https://datamaxiplus.com/my/account.
Q) Is there a limit on the number of API keys I can request?
Each user is limited to 1 API key.
2. Subscription Plans & Pricing
Q)What are the available pricing plans for DataMaxi+?
DataMaxi+ offers four pricing plans tailored to different user needs:
- Free Trial – For hobbyists and emerging investors
- Starter – For beginners exploring arbitrage
- Pro – For professional investors
- Pro+ – For tech-savvy investors
Q) Which plan should I choose?
- Free Trial: If you're a beginner or a hobbyist looking to explore arbitrage.
- Starter: Best for those beginning their arbitrage journey.
- Pro: Ideal for professional investors, with arbitrage capabilities between CEX and DEX.
- Pro+: Designed for expert traders and bot developers, with full API support and all premium features.
Q) Can I get a discount for long-term subscriptions?
Yes, we offer discounts for users who opt for long-term subscriptions:
- Yearly Plan: Subscribing to an annual plan gives you significant savings compared to monthly payments.
- Monthly Plan: The monthly subscription is available at the regular price without any discounts.
The discount will be automatically applied during checkout if you choose the yearly plan.
For more details about the specific pricing, please visit our https://datamaxiplus.com/pricing.
Q) Is there a corporate or team pricing plan available?
Yes, we offer special pricing for teams and corporate users. If you're interested in a customized plan tailored to your team's needs, please reach out to us at business@datamaxiplus.com to discuss your requirements.
Q) Is VAT or other taxes included in the pricing?
The prices listed on our website are exclusive of taxes. VAT, GST, or any other applicable regional taxes will be added during the checkout process based on your location and billing details.
The prices listed on our website are exclusive of taxes. VAT, GST, or any other applicable regional taxes will be added during the checkout process based on your location and billing details.
Q) When will subscriptions for the Pro and Pro+ plans open?
Subscriptions for the Pro and Pro+ plans will open in the second half of 2025. Please join our waiting list to receive an email notification once subscriptions become available.
3. Payments & Billing
Q) Will I be notified about upcoming renewals or payments?
Yes, you will receive a notification prior to your subscription renewal. We will send you an email reminder 7 days and 1 day before your subscription is due to renew.
Q) What happens if my payment fails?
If your payment fails, we will notify you via email and provide instructions on how to resolve the issue.
- Retry the payment: You can try reprocessing the payment by logging into your account and updating your payment method.
- Check payment details: Ensure that your payment information (credit card details, billing address, etc.) is correct.
- Contact your bank: Payment failures may be due to bank issues. Please contact them to ensure there are no restrictions.
- Contact support: If you're still unable to resolve the issue, please contact our support team at support@datamaxiplus.com.
Q) What payment options are available?
We accept major credit cards that are supported by Stripe. Crypto payments are not available at this time.
Q) What is your policy on refunds?
Payments made are non-refundable. We do not provide refunds or credits for any services already paid for.
Q) How does the renewal process work?
Stripe billing is set to auto-renew by default. If you do not cancel your subscription by 3 days before your billing date, you authorize us to automatically charge your account for the next billing cycle.
Q) Can I subscribe to only one particular function or feature?
No, you cannot subscribe to a single function or feature. You will need to subscribe to the Starter plan or to the Pro/Pro+ plans once they are launched.
Q) Can I update my payment method after subscribing?
Yes, you can update your payment details anytime by logging into your account page.
4. Account Management
Q) Can I change the email associated with my subscription?
Unfortunately, we do not allow users to change the email address associated with their subscription. If you need to update your email, you will need to cancel your current subscription and subscribe again using the new email address.
Q) How can I upgrade my plan?
If you wish to upgrade your plan, select the plan you want to upgrade to in your account page and follow the next steps.
Q) What if I want to downgrade my plan?
- You can downgrade your account on your account page. However, payments made through Stripe are non-refundable.
- You will still have access to your current plan until the end of your subscription period (end of the month for a monthly subscription, or the remaining months for a yearly subscription).
Q) Can I transfer my account to a friend, relative, or another third party?
- No, account transfers to friends, relatives, or third parties are not permitted. Your account is personal and non-transferable, and access should only be used by the registered account holder.
- Allowing account transfers could lead to unauthorized access to personal data, security risks, or fraud, which we aim to prevent.
- To ensure the security of your account and compliance with data protection laws, we do not allow the transfer of accounts under any circumstances.
- If you have any questions or concerns about your account, please reach out to our support team for assistance.
Q) I may go on holiday for a while; can I pause my subscription?
- No, even if you do not access the service, your membership period will still be counted as usual.
- We do not offer the option to pause the subscription during your absence.
5. Chain Coverage & New Features
Q) Which chains will be covered in your DEX plan in the Pro or Pro+ plan?
In the beginning, we will cover Kaia Chain. We will also include BNB Chain and other EVM-compatible chains.
Please join our waiting list to receive an email notification once subscriptions for the Pro or Pro+ plans become available.
If you have any additional questions, please contact us at business@datamaxiplus.com.
Glossary
Terms used across the DataMaxi+ docs and API. Alphabetical. Questions about anything not listed: business@datamaxiplus.com.
Basis
The difference between the spot price and the futures (typically perpetual) price for the same underlying, usually expressed as a percentage of spot. Positive basis means futures trade above spot (market is in contango); negative basis means futures trade below spot (backwardation).
CEX
Centralised exchange. Custodial venues like Binance, Bybit, OKX, Upbit, Coinbase. The exchange holds your funds and matches your orders against an internal order book.
DEX
Decentralised exchange. Non-custodial venues that match orders via on-chain smart contracts (AMMs or order books). Examples: Uniswap, PancakeSwap.
Funding rate
Periodic cash transfer between long and short holders of a perpetual futures contract. Positive funding means longs pay shorts; negative means shorts pay longs. Paid every settlement interval (commonly 1, 4, or 8 hours). The rate is set by each venue and converges spot/perp prices.
Interval (candle)
The bucket size for OHLCV candles.
1M— 1 month1w— 1 week1d— 1 day1h— 1 hour1m— 1 minute
Kimchi premium
Slang for the price premium of crypto on Korean exchanges (Upbit, Bithumb, Coinone) versus global venues, after converting KRW to a common quote currency (USDT/USD). Driven by capital controls and local demand. Can be positive (Korean price higher) or negative.
Liquidation
Forced closure of a leveraged position when collateral falls below the maintenance margin. Liquidations are public events on most venues and appear in DataMaxi+'s liquidation endpoints/streams.
Mid-price
The midpoint of the best bid and best ask: (bid + ask) / 2. Used as a fair-value reference price when both sides of the book are tight.
OHLCV
Open, High, Low, Close, Volume — the five values that define a single candle bar.
Perpetual (perp)
A futures contract with no expiry date, kept anchored to spot price via funding rate payments. The dominant derivatives instrument in crypto.
Premium
Generic term for the relative price difference between two venues (or two markets) for the same instrument. DataMaxi+ exposes this on the /api/v1/premium endpoint, normalised in basis points.
Settlement interval
The cadence at which funding payments are exchanged on a perpetual contract. Most venues settle every 8 hours; some (Binance USDC pairs, BitMEX) settle every 1 or 4 hours.
Slippage
The difference between the expected fill price (e.g., mid-price or top-of-book) and the actual average fill price after walking the book. Larger orders have larger slippage. A key cost component in any execution strategy.
Spread
The difference between the best ask and the best bid on a single venue's order book. Tight spread = liquid market. Also used loosely for any cross-venue or cross-instrument price difference.
Symbol format
DataMaxi+ uses BASE-QUOTE across all endpoints — e.g., BTC-USDT, ETH-KRW. Not BTC/USDT (Binance style) or BTCUSDT (compact style). Multi-leg WebSocket subscriptions use BASE-QUOTE@EXCHANGE.
Taker / Maker
A maker order sits on the book and provides liquidity; a taker order crosses the spread and consumes liquidity. Maker fees are usually lower than taker fees. Most arbitrage execution is taker on both legs.