SHARKRULE / Learn

Crypto exchange APIs compared: Binance, Kraken and more

An exchange API lets software read account information and, with permission, submit orders. Choosing a connection means checking the exact exchange product, account permissions and recovery behavior. This comparison covers five exchange APIs and gives you a practical acceptance checklist; it is not a ranking of returns or a list of confirmed SharkRule integrations.

SharkRule · Reviewed

Compare the API product, not just the exchange name

A brand can operate separate spot, derivatives and regional services. A bot that supports one does not automatically support the others. Ask for the exact product name, supported account type and order types. Check eligibility directly with the exchange before creating credentials.

Documented API differences; check the linked official documentation for current details
Exchange / APIConnection checkTesting distinction
Binance SpotConfirm supported signing key type and explicit trading permission.Spot Testnet uses virtual assets; do not mix test and production credentials.
Kraken SpotOrder creation, cancellation and account queries have distinct permissions.AddOrder validate=true checks an order without sending it to the matching engine; it does not simulate a fill.
Coinbase Advanced TradeConfirm Advanced Trade support; an exchange brand alone is insufficient.The Advanced Trade sandbox returns predefined mocked account/order responses, not live market execution.
OKX API v5Review Read, Trade and Withdraw scopes and the account mode. OKX Trade also includes internal funding transfers.Demo trading has its own setup and does not support every production function.
Bybit V5Match the regional service, product category and environment to the connector.Demo trading and testnet are distinct environments; demo supports only a subset of APIs.

Exchange access is different from connecting a wallet

For a centralized exchange connection, the account balance remains held by the exchange. API authorization gives software a defined ability to act on that account. It is different from connecting a self-custody wallet or approving an on-chain token allowance. A trading connection should not require your exchange login password or wallet recovery phrase.

Disabling withdrawals is an important boundary, but trading access can still lose money through unwanted orders, fees or exposure. Record every requested permission and why the application needs it. If the permission label bundles more capabilities than your intended workflow, inspect the scope before accepting it.

Use three separate tests before enabling automation

An endpoint returning a valid response proves only the behavior it actually tests. A static sandbox can help verify response parsing; it cannot show whether an order would fill at a real price. Order validation can check an admissible request without creating a trade. Keep those outcomes separate in your notes.

  1. Connection test: read the expected account and balances using the narrowest supported access. Confirm account identity, product and environment; an authenticated response alone is not enough.
  2. Order-handling test: use a supported demo, testnet or local simulator to exercise rejection, partial completion, cancellation and connection loss. Record which cases the environment cannot reproduce.
  3. Rule test: replay hypothetical decisions with explicit fees, spread, delay and position limits. Reserve separate data for evaluation after changing a rule. A successful backtest does not establish future results.

A worked example: the missing order response

Suppose a hypothetical rule may submit one order for 100 units of quote currency. The request times out and the application sees no confirmation. Sending another order immediately can double the intended exposure if the first request reached the exchange. Stopping the screen animation does not resolve the uncertainty.

An acceptance test should require the application to pause further submissions, check order and fill records using the exchange's identifiers, and calculate remaining exposure before taking another action. Repeat the test with a partial fill and a delayed cancellation. Passing means the final account state is explainable, not merely that the interface displays success.

Questions to ask any automation provider
SituationEvidence to request
A connection stopsThe last confirmed order state and a documented reconciliation process.
You pause a ruleA clear distinction between stopping new orders and cancelling existing ones.
An API key is revokedConfirmation that access ended, followed by an exchange-side check of open orders.
A symbol or minimum size changesCurrent exchange metadata and a rejected-order path that does not repeatedly resubmit.

Build a connection checklist you can verify

For each candidate connection, write down the exchange entity, account type, permitted markets, key permissions, any IP restriction, order-size limits, maximum total exposure and stop procedure. Add the date and official source for each decision. Leave an unknown field unresolved until the provider can explain it.

Avoid selecting an API solely from an advertised fee or a broad claim of multi-exchange support. Actual costs depend on the account, product and execution. Recheck current fee schedules, account eligibility and supported features directly. SharkRule is preparing exchange-connected automation with Binance first; the comparisons here do not announce availability for Kraken, Coinbase, OKX or Bybit.

Frequently asked questions

Which exchange API is best for a trading bot?

There is no universal answer. Start with account eligibility and the exact supported product, then compare permissions, order recovery and testing. A feature checklist is more useful than a claim of the highest return.

Can the same API key work across exchanges?

No. Credentials belong to a specific exchange and environment. A multi-exchange application needs separate connections and must handle each exchange's rules.

Does a successful demo prove a bot is ready for live trading?

No. Document the demo's limits and test failure handling separately. Mocked responses, validation-only endpoints and virtual matching environments each leave gaps; none guarantees future performance.

Official documentation and references

Prepared with AI assistance from the linked official documentation. Examples are hypothetical; no live account tests or return comparisons were performed.