---
title: "files-to-prompt Directory Concatenator for LLM Context"
description: "files-to-prompt by Simon Willison concatenates an entire directory of files into a single prompt for use with LLMs. It supports file extension filtering, gitignore-aware exclusions, Claude XML format output, Markdown fenced code blocks, line numbering, and stdin piping for flexible codebase-to-prompt workflows."
verification: "security_reviewed"
source: "https://github.com/simonw/files-to-prompt"
category:
  - "Developer Tools"
framework:
  - "Multi-Framework"
tool_ecosystem:
  github_repo: "simonw/files-to-prompt"
  github_stars: 2643
---

# files-to-prompt Directory Concatenator for LLM Context

files-to-prompt by Simon Willison concatenates an entire directory of files into a single prompt for use with LLMs. It supports file extension filtering, gitignore-aware exclusions, Claude XML format output, Markdown fenced code blocks, line numbering, and stdin piping for flexible codebase-to-prompt workflows.

## Installation

Choose whichever fits your setup:

1. Copy this skill folder into your local skills directory.
2. Clone the repo and symlink or copy the skill into your agent workspace.
3. Add the repo as a git submodule if you manage shared skills centrally.
4. Install it through your internal provisioning or packaging workflow.
5. Download the folder directly from GitHub and place it in your skills collection.

## Source

- [Agent Skill Exchange](https://agentskillexchange.com/skills/files-to-prompt-directory-concatenator-llm-context/)