> For the complete documentation index, see [llms.txt](https://docs.ladybug.tools/fairyfly-primer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ladybug.tools/fairyfly-primer/readme.md).

# Fairyfly Primer

![Fairyfly](https://raw.githubusercontent.com/ladybug-tools/artwork/refs/heads/master/icons_bugs/png/fairyfly-small.png)

This primer provides an overview of the Fairyfly components for Grasshopper.

Fairyfly enables the creation of performance models of construction details and supports simulation with LBNL [THERM](https://windows.lbl.gov/software-tools#therm-heading), which is a widely used freeware for modeling two-dimensional heat-transfer in building components such as windows, walls, foundations, etc.

## Installation

See the [Wiki of the lbt-grasshopper repository](https://github.com/ladybug-tools/lbt-grasshopper/wiki) for the installation instructions for the entire Ladybug Tools Grasshopper plugin (including fairyfly-grasshopper).

## Resources

Post your questions to [Ladybug Tools forum](http://discourse.ladybug.tools) and see the [fairyfly-grasshopper](https://github.com/ladybug-tools/fairyfly-grasshopper) repository for source code.

Please [let us know](https://github.com/ladybug-tools/fairyfly-grasshopper/issues) if you find any mistakes in grammar or spelling in this primer and we will gladly fix them.


---

# 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://docs.ladybug.tools/fairyfly-primer/readme.md?ask=<question>&goal=<endgoal>
```

`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.