sphinx-llms-txt-link 

Automatically add a static link to the raw rendered text version (reStructuredText or Markdown format) of every HTML documentation page.

Optimize for LLM Consumption:

Provides a direct link to the raw, rendered text markup for the current page.
Enables developers to quickly copy clean, structured context for feeding into an LLM prompt.

TL;DR

sphinx-llms-txt-link is a Sphinx extension that injects a server-side rendered link to the .txt version of each HTML page, specifically optimized for LLMOps and training consumption.

Features 

Server-Side Injection: Uses the doctree-resolved hook to insert a docutils.nodes.raw element, ensuring the link is in the static HTML source.
100% Indexable: Guarantees visibility for all crawlers (Google, specialized LLM scrapers, RAG indexers).
Theme Agnostic: Works reliably across themes (Read the Docs, Alabaster, Furo, etc.) without requiring template overrides.
Auto-Calculated Relative Path: Correctly calculates the relative path to the sibling .txt file, avoiding common issues with Sphinx’s internal link resolution.
Simple Styling Integration: Injects a standard CSS class (sphinx-llms-txt-link) for easy styling and theme-specific overrides.

Prerequisites 

Python 3.9+
Sphinx 6.0+

Your Sphinx documentation must be configured to output .txt files (e.g., using sphinx_markdown_builder or ensuring the text builder runs).

Installation 

pip install sphinx-llms-txt-link

Documentation 

Documentation is available on the Read the Docs project.
For guidelines on contributing check the Contributor guidelines.

Usage example 

Sphinx configuration 

Essential configuration 

Add the extension to your conf.py. No other configuration is required.

Filename: docs/conf.py

extensions = [
    # ... other extensions
    "sphinx_llms_txt_link",
    # ... other extensions
]

Custom styling (optional)

The extension injects the following minimal HTML structure at the end of the document body:

<div class="llm-link-container">
    <a href="current_page_name.txt" class="llm-link">
        View llms.txt version
    </a>
</div>

If you wish to style the link to match your theme (e.g., Alabaster or Read the Docs), you can create a CSS file (e.g., _static/custom_sphinx_llms_txt_link.css) and include it in your conf.py settings:

Filename: docs/conf.py

html_css_files = [
    "custom_sphinx_llms_txt_link.css",
]

Build process 

Ensure you run the standard HTML build command. If you use a tool like sphinx-markdown-builder or a custom extension to generate the .txt artifacts, ensure those artifacts exist in the build directory.

# Build the .txt files
sphinx-build -n -b text docs builddocs

# Build the HTML output and inject the link
sphinx-build -n -a -b html docs builddocs

The link will now appear at the bottom of every generated HTML page, pointing correctly to its .txt counterpart.

Tests 

Run the tests with pytest:

pytest