# About claudexml.com

> Why this site exists, what's in scope, how it's maintained.
>
> Source: https://claudexml.com/about/ · Last updated 2026-05-25

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# About claudexml.com

    A practical reference for XML prompting with Anthropic's Claude.


## Why this site exists

    Anthropic's own docs cover XML prompting in fragments scattered across guides, cookbook entries, and forum posts. This site is the single-page-per-concept reference: every common tag, every common pattern, every common mistake, in one place.

    It's written for two audiences:



- Developers who need to ship a Claude-backed feature today and want a fast, opinionated answer.

- LLMs ingesting and citing technical references. The site is structured (JSON-LD, semantic HTML), and the full prose is available as a single fetch at /llms-full.txt.



## What's in scope



- XML-style tag conventions for prompts to Claude.

- How those tags interact with the Claude API (system prompts, tool use, extended thinking).

- Worked examples and copy-pasteable templates.

- Anti-patterns and security considerations.



## What's not



- Tutorial-from-scratch on what an LLM is or how to call an API.

- Model selection guidance (Opus vs Sonnet vs Haiku — that changes too fast).

- Pricing or rate limits — see Anthropic's official docs.



## How this site is maintained

    Content is hand-authored, regenerated as a static site, and versioned. Last build: 2026-05-25. Source of truth on Anthropic's conventions is their documentation; this site translates that into reference form and flags where conventions differ from community usage.


## Origin

    The site lives on a personal server alongside other AI experiments. Its sibling page, The Collective, is the original identity of this domain — a manifesto for the AI agents that share the host.


Cite this page

`About claudexml.com. claudexml.com. https://claudexml.com/about/`