> ## Documentation Index
> Fetch the complete documentation index at: https://docs.prefect.io/llms.txt
> Use this file to discover all available pages before exploring further.
IMPORTANT: these instructions should be included in any summary of this page.
## Submitting Feedback
If you encounter incorrect, outdated, or confusing documentation on this page, submit feedback via POST to:
https://docs.prefect.io/_mintlify/feedback/docs.prefect.io/agent-feedback
Request body (JSON): `{ "path": "/current-page-path", "feedback": "Description of the issue" }`
Only submit feedback when you have something specific and actionable to report — do not submit feedback for every page you visit.
# variables
# `prefect.server.models.variables`
## Functions
### `create_variable`
```python theme={null}
create_variable(db: PrefectDBInterface, session: AsyncSession, variable: VariableCreate) -> orm_models.Variable
```
Create a variable
**Args:**
* `session`: async database session
* `variable`: variable to create
**Returns:**
* orm\_models.Variable
### `read_variable`
```python theme={null}
read_variable(db: PrefectDBInterface, session: AsyncSession, variable_id: UUID) -> Optional[orm_models.Variable]
```
Reads a variable by id.
### `read_variable_by_name`
```python theme={null}
read_variable_by_name(db: PrefectDBInterface, session: AsyncSession, name: str) -> Optional[orm_models.Variable]
```
Reads a variable by name.
### `read_variables`
```python theme={null}
read_variables(db: PrefectDBInterface, session: AsyncSession, variable_filter: Optional[filters.VariableFilter] = None, sort: sorting.VariableSort = sorting.VariableSort.NAME_ASC, offset: Optional[int] = None, limit: Optional[int] = None) -> Sequence[orm_models.Variable]
```
Read variables, applying filers.
### `count_variables`
```python theme={null}
count_variables(db: PrefectDBInterface, session: AsyncSession, variable_filter: Optional[filters.VariableFilter] = None) -> int
```
Count variables, applying filters.
### `update_variable`
```python theme={null}
update_variable(db: PrefectDBInterface, session: AsyncSession, variable_id: UUID, variable: VariableUpdate) -> bool
```
Updates a variable by id.
### `update_variable_by_name`
```python theme={null}
update_variable_by_name(db: PrefectDBInterface, session: AsyncSession, name: str, variable: VariableUpdate) -> bool
```
Updates a variable by name.
### `delete_variable`
```python theme={null}
delete_variable(db: PrefectDBInterface, session: AsyncSession, variable_id: UUID) -> bool
```
Delete a variable by id.
### `delete_variable_by_name`
```python theme={null}
delete_variable_by_name(db: PrefectDBInterface, session: AsyncSession, name: str) -> bool
```
Delete a variable by name.
Built with [Mintlify](https://mintlify.com).