What is cookie-sync?
cookie-sync is a Claude skill by browserbase that export cookies from local Chrome into a Browserbase persistent context. It is listed under Agents & automation and has 3,738 GitHub stars.
| Type | Claude skill |
|---|---|
| Author | browserbase |
| Repository | browserbase/skills |
| Popularity | 3,738 GitHub stars |
| Category | Agents & automation |
| Security | Low risk (84/100) |
| Rank | #444 of 1,262 Claude skills; #30 in Agents & automation |
| SKILL.md length | 127 lines |
| Last commit | 2026-09-29 |
| Stars this week | +7 |
Is cookie-sync safe to install?
cookie-sync scores 84/100 on the MCPMods security check: Low risk. No checks raised a concern. It passed 5 of 9 checks.
Skill results come from a static scan of its SKILL.md for instruction overrides, hidden actions, risky commands and credential access.
| Check | Result |
|---|---|
| No instruction-override phrases | Pass |
| No hidden actions | Pass |
| No pipe-to-shell installers | Pass |
| No obfuscated code | Pass |
| No destructive commands | Pass |
| Reads keys or credentials | Note |
| Makes network requests | Note |
| Runs shell commands | Note |
| Installs packages | Note |
What the scan matched
- credentials:
BROWSERBASE_API_KEY - network:
https:// - shell:
```bash - package install:
npm install - scripts:
scripts/cookie-sync.mjs
How do I install cookie-sync?
- Install with the skills CLI. Works for Claude Code and other agents that read skills.
npx skills add https://github.com/browserbase/skills --skill cookie-sync
- Or copy it by hand. Claude Code loads any folder with a SKILL.md from ~/.claude/skills.
git clone https://github.com/browserbase/skills cp -r skills/skills/cookie-sync ~/.claude/skills/cookie-sync
- Use it. Claude loads the skill when a task matches its description. You can also name it in your prompt.
Use the cookie-sync skill to …
Or ask Claude to set it up
Paste this into Claude Code and it installs cookie-sync for you:
Install the "cookie-sync" skill from https://github.com/browserbase/skills/tree/main/skills/cookie-sync into ~/.claude/skills, then tell me in one line what it does.
More from browserbase/skills
This repository has 7 Claude skills on MCPMods.
- browser: Automate web browser interactions through natural language CLI commands (Low risk)
- browserbase-cli: CLI wrapper around the Browserbase platform (Not scanned)
- fetch: Fetch HTML, JSON, headers, and status codes through the Browserbase API (Low risk)
- functions: Deploy browser automation scripts as serverless cloud functions (Low risk)
- search: Search the web via the Browserbase API with structured results (Low risk)
- ui-test: Run adversarial UI tests by analyzing git diffs in a real browser (Low risk)