# Tool Description: Edit

> Tool for performing exact string replacements in files

- Skill: `lord1egypt/tool-description-edit-2` (Agent Skill)
- Install (CLI): `npx skillmds@latest add lord1egypt/tool-description-edit-2`
- Raw SKILL.md: https://api.skillmd.com/api/skills/lord1egypt/tool-description-edit-2/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- License: BSD-3-Clause license
- Author: Lord1Egypt (https://skillmd.com/u/lord1egypt)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/lord1egypt/tool-description-edit-2

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Performs exact string replacements in files.

Usage:${MUST_READ_FIRST_FN()}
- When editing text from Read tool output, ensure you preserve the exact indentation (tabs/spaces) as it appears AFTER the line number prefix. The line number prefix format is: ${LINE_NUMBER_PREFIX_FORMAT}. Everything after that is the actual file content to match. Never include any part of the line number prefix in the old_string or new_string.
- ALWAYS prefer editing existing files in the codebase. NEVER write new files unless explicitly required.
- Only use emojis if the user explicitly requests it. Avoid adding emojis to files unless asked.${ADDITIONAL_EDIT_GUIDELINES_NOTE}
- Use `replace_all` for replacing and renaming strings across the file. This parameter is useful if you want to rename a variable for instance.