OpenRuna
Sign in

Cursor Prompts — edit_file

TOOL

Use this tool to propose an edit to an existing file or create a new file. This will be read by a less intelligent model, which will quickly apply the edit. You should make it clear what the edit is, while also minimizing the unchanged code you write. When writing the edit, you should specify each edit in sequence, with the special comment `// ... existing code ...` to represent unchanged code in between edited lines. For example: ``` // ... existing code ... FIRST_EDIT // ... existing code .

View on GitHub

Overview

Free tool — Cursor Prompts — edit_file. Use this tool to propose an edit to an existing file or create a new file. This will be read by a less intelligent model, which will quickly apply the edit. You should make i

What this tool does

Reach for "Cursor Prompts — edit_file" whenever you need a reliable tool for real work across ChatGPT, Claude, Gemini, and Cursor. Use this tool to propose an edit to an existing file or create a new file. This will be read by a less intelligent model, which will quickly apply the edit. You should make it clear what the edit is, while also minimizing the unchanged code you write. When writing the edit, you should specify each edit in sequence, with the special comment `// ... existing code ...` to represent unchanged code in between edited lines. For example: ``` // ... existing code ... FIRST_EDIT // ... existing code . OpenRuna cross-links it to related prompts, agents, and tools, which makes assembling a full workflow around it straightforward. Open a new conversation and paste it in, wire it into an agent, or keep it in your team's prompt library.

Use cases

  • Combine it with related tools and prompts in the same OpenRuna category to build an end-to-end workflow.
  • Reach for it during planning or review sessions when you want consistent, AI-assisted structure.
  • Use "Cursor Prompts — edit_file" when you need a repeatable tool for professional work without rewriting instructions every time.
  • Hand "Cursor Prompts — edit_file" to a new teammate so their tool output matches your team's quality bar from day one.

Example output

Ask the model to apply "Cursor Prompts — edit_file" to your scenario and it returns a structured answer — clear sections, actionable steps, and assumptions stated upfront — ready to paste into docs, tickets, or code comments. Expect 2–3 iterations to dial in tone and depth for your context.

Tips by platform

Claude

With Claude, drop this tool into Project knowledge so every chat in the project inherits it. Ask Claude to restate the goal first, then run — it catches edge cases early.

ChatGPT

For ChatGPT, save this tool as a Custom Instruction or a saved prompt so it is one click away. Add your specifics in a follow-up rather than editing the original.

Cursor

In Cursor, lift the key instructions from this tool into .cursorrules or a SKILL.md file, then reference it in Agent mode with @ mentions. Keep the title in a comment so teammates can find it on OpenRuna.

Frequently asked questions

What is "Cursor Prompts — edit_file"?
It is a tool listed on OpenRuna — Use this tool to propose an edit to an existing file or create a new file. This will be read by a less intelligent model, which will quickly apply the edit. You should make it clear what the edit is, while also minimizing the unchanged code you write. When writing the edit, you should specify each edit in sequence, with the special comment `// ... existing code ...` to represent unchanged code in between edited lines. For example: ``` // ... existing code ... FIRST_EDIT // ... existing code . You can copy and adapt it for ChatGPT, Claude, Cursor, or any other AI assistant.
Is "Cursor Prompts — edit_file" free to use?
Most OpenRuna resources are open or CC0-licensed. Check the license shown on this page before commercial use; premium collections are clearly marked as such.
How do I get the best results from this tool?
Replace any placeholders, add your project context, and ask the model to confirm its assumptions first. Iterate over 2–3 follow-up turns rather than expecting a perfect first response.
Does "Cursor Prompts — edit_file" work with both Claude and ChatGPT?
Yes — it is model-agnostic text, so it runs on Claude, ChatGPT, Gemini, and Cursor. The tips on this page cover each of those assistants specifically.
Where can I find resources related to "Cursor Prompts — edit_file"?
Scroll to the Related resources section on this page, or open the matching category hub on OpenRuna to find connected prompts, tools, agents, and datasets in the same topic area.

Related resources