How to turn off signature in VS Code Copilot AI: remove Co-Authored-by with one line of command

Problem Scenario

Starting in 2026, GitHub Copilot in VS Code will automatically add Co-authored-by: GitHub Copilot to the commit message in every AI-assisted code submission. This creates problems for open source project maintainers and developers who don’t want to expose traces of their AI usage.

Good News: This feature can be turned off and only requires one line of configuration.

Three closing methods

Method 1: VS Code settings panel (recommended, the simplest)

1. Open VS Code
2. Cmd/Ctrl + , Open settings
3. Search for copilot co-authored
4. Uncheck GitHub › Copilot: Co Authored By Enabled
5. Restart VS Code

Method 2: Modify settings.json directly

In VS Code Cmd/Ctrl + Shift + P → Search for Preferences: Open User Settings (JSON), add:

{
  "github.copilot.coAuthoredBy.enabled": false
}

（）

.vscode/settings.json

{
  "github.copilot.coAuthoredBy.enabled": false
}

，。

， Copilot ， git add + git commit。 commit message

git log -1 --format='%B'

Co-authored-by: GitHub Copilot，。

GitHub

GitHub ""。， AI —— AI 。

Copilot （AI Agent ）， commit AI commit 。

AI ，，

# git commit
git commit -m "feat: add user auth" -m "Co-authored-by: AI Assistant <ai@example.com>"

Or automatically add signatures through git hooks in tools such as Claude Code and Codex.

Tool entry

GitHub Copilot, Claude Code, Codex, VS Code.

Next step

1. Immediately turn off unnecessary AI signatures
2. If you are a team manager, discuss a unified signature strategy with your team
3. Consider using Claude Code + DeepSeek V4 as an alternative (no mandatory signature)

Related reading

• The Complete Guide to GitHub Copilot Pricing 2026

• DeepSeek V4 vs Claude Code actual test comparison

• How to use AI Agent to realize automated coding workflow

• DeepSeek V4 vs Claude Code: 90% Cheaper, Same Quality

• Claude Code + DeepSeek V4 Building Tutorial: API Fees Dropped by 90% (15 Minutes)

• Claude Code automated writing practice: build an AI content production pipeline in 30 minutes

• Complete GitHub Copilot Price Guide 2026: Comparison of measured costs for each package after charging based on usage