# Reference

Use the Reference to look up OmniFabric SQL syntax and the exact request and response contracts for the CloudSigma API.

## Choose a reference

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:gutter: 3

:::{grid-item-card} OmniFabric SQL
:link: sql/index
:link-type: doc
:class-card: mo-product-card

Look up SQL syntax, data types, functions, operators, system objects, privileges, and compatibility limits.
:::

:::{grid-item-card} API Reference
:link: api/index
:link-type: doc
:class-card: mo-product-card

Find the API endpoint, authentication requirements, parameters, response fields, and error information for each API operation.
:::

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## Documentation tree