> ## Documentation Index
> Fetch the complete documentation index at: /docs/llms.txt
> Use this file to discover all available pages before exploring further.

# sources

# `prefect.settings.sources`

## Classes

### `EnvFilterSettingsSource` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L50](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L50)</sup>

Custom pydantic settings source to filter out specific environment variables.

All validation aliases are loaded from environment variables by default. We use
`AliasPath` to maintain the ability set fields via model initialization, but those
shouldn't be loaded from environment variables. This loader allows use to say which
environment variables should be ignored.

### `FilteredDotEnvSettingsSource` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L93](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L93)</sup>

### `ProfileSettingsTomlLoader` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L131](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L131)</sup>

Custom pydantic settings source to load profile settings from a toml file.

See [https://docs.pydantic.dev/latest/concepts/pydantic\_settings/#customise-settings-sources](https://docs.pydantic.dev/latest/concepts/pydantic_settings/#customise-settings-sources)

**Methods:**

#### `get_field_value` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L182](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L182)</sup>

```python theme={null}
get_field_value(self, field: FieldInfo, field_name: str) -> Tuple[Any, str, bool]
```

Concrete implementation to get the field value from the profile settings

### `TomlConfigSettingsSourceBase` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L235](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L235)</sup>

**Methods:**

#### `get_field_value` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L257](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L257)</sup>

```python theme={null}
get_field_value(self, field: FieldInfo, field_name: str) -> tuple[Any, str, bool]
```

Concrete implementation to get the field value from toml data

#### `prepare_field_value` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L284](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L284)</sup>

```python theme={null}
prepare_field_value(self, field_name: str, field: FieldInfo, value: Any, value_is_complex: bool) -> Any
```

Override to skip JSON decoding for dict values already parsed from TOML.

### `PrefectTomlConfigSettingsSource` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L309](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L309)</sup>

Custom pydantic settings source to load settings from a prefect.toml file

**Methods:**

#### `get_field_value` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L257](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L257)</sup>

```python theme={null}
get_field_value(self, field: FieldInfo, field_name: str) -> tuple[Any, str, bool]
```

Concrete implementation to get the field value from toml data

#### `prepare_field_value` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L284](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L284)</sup>

```python theme={null}
prepare_field_value(self, field_name: str, field: FieldInfo, value: Any, value_is_complex: bool) -> Any
```

Override to skip JSON decoding for dict values already parsed from TOML.

### `PyprojectTomlConfigSettingsSource` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L328](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L328)</sup>

Custom pydantic settings source to load settings from a pyproject.toml file

**Methods:**

#### `get_field_value` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L257](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L257)</sup>

```python theme={null}
get_field_value(self, field: FieldInfo, field_name: str) -> tuple[Any, str, bool]
```

Concrete implementation to get the field value from toml data

#### `prepare_field_value` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L284](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L284)</sup>

```python theme={null}
prepare_field_value(self, field_name: str, field: FieldInfo, value: Any, value_is_complex: bool) -> Any
```

Override to skip JSON decoding for dict values already parsed from TOML.