> For the complete documentation index, see [llms.txt](https://help.aphex.co/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.aphex.co/docs/integrations-and-api/external-map-layers/propeller-set-up-guide.md).
# Connect Propeller Layers
{% hint style="info" %}
**Things to know before you get started:**
* This feature is available on Pro+ or Enterprise plans
* You need to be a Project Admin to set up the integration
* WMTS is a paid-premium feature in Propeller. Check with your Propeller Customer Success Engineer if you're unsure whether your account has access
{% endhint %}
If your team uses Propeller to capture drone surveys and aerial imagery, you can bring that same data into Aphex. The Propeller integration uses WMTS (Web Map Tile Service) to stream live site imagery directly onto your Map, so your team plans against the most current picture of the site, without anyone downloading or re-uploading a thing.
This guide walks you through how to generate a WMTS link in Propeller, add it to your project in Aphex, and set a Layer Policy to control what shows up.
## Retrieving the WMTS Link
***
Propeller generates a unique WMTS link per site. You'll need this link to connect your survey imagery to Aphex.
#### To generate your WMTS link:
* In Propeller, click your User Icon → WMTS and API
* Click , give the link a clear name, and select the Site you want to connect
* Click
* Copy the generated link - this is the link you’ll use in Aphex
{% hint style="info" %}
Propeller WMTS links don't require a username or password, anyone with the link can access your survey imagery. Only share them with trusted teammates, and avoid sending them over email or messaging apps where possible.
Each link is unique. If a link is shared accidentally, you can delete it from WMTS and API settings in Propeller to instantly revoke access.
{% endhint %}
## Add the Layer to Your Aphex Map
***
Once you’ve got your WMTS link handy, you can plug it into any real-world Location in your Project.
Visit our Add Map Layers doc for step by step instructions on how to add layers to the Map.
## Set a Layer Policy
***
When Aphex connects to your Propeller WMTS link, it detects all available survey sublayers for that site. A Layer Policy controls which of those sublayers are brought into your project, keeping things clean and relevant for your team.
Because Propeller WMTS links auto-update with each new survey upload, your Layer Policy also determines how Aphex handles those incoming datasets over time.
{% hint style="info" %}
Most Recent is usually the best starting point for Propeller surveys. It keeps your map current without pulling in every historical dataset.
{% endhint %}
Visit our Layer Policies doc for step by step instructions on how to define a layer policy.
## How Auto-Updates Work
***
Propeller WMTS links update automatically each time a new survey is processed and published for your site. You don't need to regenerate the link or reconnect the layer in Aphex, new datasets will appear in line with your Layer Policy, with no action needed on your end.
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://help.aphex.co/docs/integrations-and-api/external-map-layers/propeller-set-up-guide.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.