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

# External

> A value resolved from a third-party provider.

## Overview

External properties are resolved from a connected provider (GitHub, Slack, etc.) rather than entered by a user. Custral pulls the value on a freshness schedule and caches it on the field.

## Configuration

| Setting          | What it does                                                                                                                       |
| ---------------- | ---------------------------------------------------------------------------------------------------------------------------------- |
| Provider         | The connected app the value comes from (for example, GitHub or Slack).                                                             |
| Resource         | The kind of item to pull from that provider (for example, a pull request or a Slack user).                                         |
| Source property  | A property on the same record that identifies which item to fetch, for example, a text property holding a GitHub pull request URL. |
| Refresh interval | How often Custral re-checks the provider for an updated value.                                                                     |

## What it stores

The latest value pulled from the provider, along with when it was last fetched and the source it was looked up from. If a fetch fails, the property keeps the last known value and shows the error.

## Filtering

Available filters depend on the provider and resource, for example, filtering by a pull request's state, by whether the value is stale, or by whether it's set at all.

## Examples

A "PR status" property on a Feature record, sourced from a sibling "PR URL" property.

## See also

* [Integrations overview](/integrations/overview)
* [GitHub integration](/integrations/github)


## Related topics

- [Workflow Actions](/automation/workflows/actions.md)
- [GitHub](/integrations/github.md)
- [Integrations](/integrations/overview.md)
- [Formula](/data/properties/complex/formula.md)
- [Phone & SMS Numbers](/comms/voice/numbers.md)