---
title: sources
sidebarTitle: sources
---

# `prefect.settings.sources`

## Classes

### `EnvFilterSettingsSource` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L41" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></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><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L84" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

### `ProfileSettingsTomlLoader` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L122" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></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


**Methods:**

#### `get_field_value` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L173" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
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><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L226" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

**Methods:**

#### `get_field_value` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L235" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
get_field_value(self, field: FieldInfo, field_name: str) -> tuple[Any, str, bool]
```

Concrete implementation to get the field value from toml data


### `PrefectTomlConfigSettingsSource` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L274" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>


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


**Methods:**

#### `get_field_value` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L235" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
get_field_value(self, field: FieldInfo, field_name: str) -> tuple[Any, str, bool]
```

Concrete implementation to get the field value from toml data


### `PyprojectTomlConfigSettingsSource` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L293" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>


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


**Methods:**

#### `get_field_value` <sup><a href="https://github.com/PrefectHQ/prefect/blob/main/src/prefect/settings/sources.py#L235" target="_blank"><Icon icon="github" style="width: 14px; height: 14px;" /></a></sup>

```python
get_field_value(self, field: FieldInfo, field_name: str) -> tuple[Any, str, bool]
```

Concrete implementation to get the field value from toml data

