Update Llms

If you've got an llms.txt file that's fallen out of sync with your repo structure, this skill does the tedious work of bringing it current. It scans your repository, compares what exists against what's documented, then updates the file following the official llmstxt.org specification. It handles the format requirements, organizes files into logical sections like Documentation and Specifications, and maintains the exact markdown structure LLMs expect. Saves you from manually tracking down new README files, moved documentation, or outdated references every time your project evolves.

skills.sh installs: 8.8K
GitHub stars: 41K
last updated: Aug 21, 2026

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Install

$ npx -y skills add github/awesome-copilot --skill update-llms --agent claude-code

Installs into .claude/skills of the current project.

Files

Update LLMs.txt File

Update the existing llms.txt file in the root of the repository to reflect changes in documentation, specifications, or repository structure. This file provides high-level guidance to large language models (LLMs) on where to find relevant content for understanding the repository's purpose and specifications.

Primary Directive

Update the existing llms.txt file to maintain accuracy and compliance with the llms.txt specification while reflecting current repository structure and content. The file must remain optimized for LLM consumption while staying human-readable.

Analysis and Planning Phase

Before updating the llms.txt file, you must complete a thorough analysis:

Step 1: Review Current File and Specification

Read the existing llms.txt file to understand current structure
Review the official specification at https://llmstxt.org/ to ensure continued compliance
Identify areas that may need updates based on repository changes

SKILL.md on GitHub