Slash Command

Sync Allowlist

Sync allowlist from GitHub repository to user settings

Type: Slash Command
Repository: fcakyon/claude-codex-settings
GitHub stars: 1.2k
License: Apache-2.0
Repo last updated: Sep 24, 2026
Source file: plugins/claude-tools/commands/sync-allowlist.md

What Sync Allowlist is

Sync Allowlist is a slash command published in the fcakyon/claude-codex-settings repository on GitHub, which has about 1.2k stars. The repository describes itself as: “Battle-tested Claude Code, OpenAI Codex, Cursor configs, plugins, hooks and agents with Kimi, MiniMax and GLM API support.”

A slash command is a reusable prompt saved as a markdown file and run by typing its name after a slash. In Claude Code, custom commands have been merged into skills: a file in .claude/commands/ and a skill folder in .claude/skills/ both create the same kind of command, and existing command files keep working.

Sync Allowlist gives you a repeatable way to run the same instructions without retyping them, optionally with arguments.

How to install Sync Allowlist

Claude Code

Download sync-allowlist.md from the repository.
Save it to ~/.claude/commands/ (all projects) or .claude/commands/ (one project). As a skill, you can instead save it as ~/.claude/skills/<name>/SKILL.md.
Run it by typing / followed by its name.

Claude Cowork

Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it.
In Customize → Skills, click +, then upload the ZIP.
Run it from any task with / and the skill name.

New to extending Cowork? Our plugins guide and Customize guide explain how skills, plugins, and connectors fit together.

Inside the source file

An excerpt from plugins/claude-tools/commands/sync-allowlist.md, shared under the repository's Apache-2.0 license. Read the full file on GitHub.

Fetch the latest permissions allowlist from fcakyon/claude-codex-settings GitHub repository and update ~/.claude/settings.json.

Steps:

Use gh api repos/fcakyon/claude-codex-settings/contents/.claude/settings.json --jq '.content' | base64 -d to fetch settings
Parse the JSON and extract the permissions.allow array
Read the user's ~/.claude/settings.json
Update only the permissions.allow field (preserve all other user settings)
Write back to ~/.claude/settings.json
Confirm with a message showing count of allowlist entries synced

Before you install

Read the whole file first. Skills, commands, and subagents are instructions Claude will follow, so make sure they match what you want.
Check which tools, scripts, or MCP servers it uses. Local servers and scripts run with your permissions.
Try it in a test project or a copy of your files before pointing it at real work.
Pin the version you tested, and review changes before updating.
Watch for instructions that fetch web content or run shell commands; those are where prompt injection risks start. See our prompt injection guide.

FAQ

What is Sync Allowlist?

Sync Allowlist is a slash command for Claude Code and Claude Cowork from the fcakyon/claude-codex-settings repository on GitHub. Sync allowlist from GitHub repository to user settings

How do I install Sync Allowlist in Claude Code?

Download sync-allowlist.md from the repository. Save it to ~/.claude/commands/ (all projects) or .claude/commands/ (one project). As a skill, you can instead save it as ~/.claude/skills/<name>/SKILL.md. Run it by typing / followed by its name.

Can I use Sync Allowlist in Claude Cowork?

Turn the command into a skill: create a folder with the file saved as SKILL.md and zip it. In Customize → Skills, click +, then upload the ZIP. Run it from any task with / and the skill name.

Is Sync Allowlist safe to install?

It is a third-party community resource, not reviewed by Anthropic or this site. Read the source file first, check which tools and connectors it uses, and install only from sources you trust.

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Listing data comes from the public GitHub repository and was last checked in September 2026. Excerpts are © their authors and shared under Apache-2.0. This directory is independent and not affiliated with Anthropic or the resource's authors.