# Platform API

The Calico Platform API allows integrations to retrieve crypto data for account holders.


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<Card title="Authorization" icon="remix-door-lock-line" href="authentication-guide">
How to authenticate users with their digital assets and grant permission for their data to be shared.
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<Card title="Providers" icon="remix-links-line" href="providers">
Add, remove, or list crypto sources connected to accounts.
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<Card title="Assets" icon="remix-copper-coin-line" href="assets">
The Assets endpoint returns a consolidated view of a user's digital asset balances across multiple sources, such as exchanges, custodial platforms, and self-custodial wallets.
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<Card title="Transactions" icon="remix-token-swap-line" href="transactions">
Transaction endpoints return comprehensive, normalized lists of a user's digital asset transactions across multiple sources, including exchanges, custodial platforms, and self-custodial wallets. 
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