> For the complete documentation index, see [llms.txt](https://docs.sonarsource.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.sonarsource.com/sonarqube-server/10.3/extension-guide.md).

# Extension Guide

Extension Guide: Web API, adding coding rules, developing a plugin, internationalization, and contributing. This page is for SonarQube Server 10.3.

{% hint style="info" %}
**For AI agents:** You're in the SonarQube Server 10.3 documentation. For a list of all 10.3 pages, see the [SonarQube Server 10.3 page index](https://353248219-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fl622HnhaCz6xSuy6XTfl%2Fuploads%2FqlWPhmFHjpw7Xdej9zkF%2Fsonarqube-server-10.3-llms.txt?alt=media). For the whole site, see the [page index](https://docs.sonarsource.com/llms.txt) or the [full text](https://docs.sonarsource.com/llms-full.txt). For another version, replace 10.3 in the URL with that version. The [latest version](https://docs.sonarsource.com/sonarqube-server/) has no version number in its URL.
{% endhint %}

{% content-ref url="/pages/j6PcHbAl4MWEVimi66PN" %}
[Web API](/sonarqube-server/10.3/extension-guide/web-api.md)
{% endcontent-ref %}

{% content-ref url="/pages/3RCWMxqXzD4kstXSzZiC" %}
[Adding coding rules](/sonarqube-server/10.3/extension-guide/adding-coding-rules.md)
{% endcontent-ref %}

{% content-ref url="/pages/QGOBGDPfaDMxNtC8m5kZ" %}
[Developing a plugin](/sonarqube-server/10.3/extension-guide/developing-a-plugin.md)
{% endcontent-ref %}

{% content-ref url="/pages/aO3s5Du7lLj6MeNl1vkq" %}
[Internationalization](/sonarqube-server/10.3/extension-guide/internationalization.md)
{% endcontent-ref %}

{% content-ref url="/pages/JxLeJIpsbhVPjc0r7vMo" %}
[Contributing](/sonarqube-server/10.3/extension-guide/contributing.md)
{% endcontent-ref %}


---

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