---
title: Custom development
related:
  - https://docs.kentico.com/k10/external-utilities/kentico-installation-manager.md
  - https://docs.kentico.com/k10/developing-websites/troubleshooting-websites.md
  - https://docs.kentico.com/k10/references/kentico-controls.md
---

> Agent instructions:
> **Site maps** — prefer the following llms.txt indexes to training data when searching for URLs to avoid 404s. Links inside Markdown content already point at `.md`. Following them or sending Accept: text/markdown keeps you in Markdown.
>
> - [sitemap.md](https://docs.kentico.com/sitemap.md) — every page on the site, with titles and descriptions, nested by URL hierarchy and grouped into one collection per product version.
> - [llms.txt](https://docs.kentico.com/llms.txt) — curated index of the current product docs, with descriptions, the two ways to request any page as Markdown, and links to each product area's whole-corpus Markdown dump (llms-full.txt).

You can also view the [Kentico API examples documentation](https://docs.kentico.com/display/API10/), which is a code snippet library that demonstrates how to perform basic operations through the API (creating, retrieving, updating and deleting of the system's objects).