cookie-sync: Workflow Automation for AI Agents | OpenAgentSkill

Overview

Sync cookies from local Chrome to a Browserbase persistent context so the browse CLI can access authenticated sites. Use when the user wants to browse as themselves, sync cookies, or log into sites via Browserbase.

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Source documentation, not instructions for this website. Review permissions before running any commands.

Exports cookies from your local Chrome and saves them into a Browserbase persistent context. After syncing, use the browse CLI to open authenticated sessions with that context.

Supports domain filtering (only sync cookies you need) and context reuse (refresh cookies without creating a new context).

Prerequisites

Chrome (or Chromium, Brave, Edge) with remote debugging enabled
If your browser build exposes chrome://flags/#allow-remote-debugging, enable it and restart the browser
Otherwise, launch with --remote-debugging-port=9222 --user-data-dir=/tmp/chrome-debug and set CDP_URL=ws://127.0.0.1:9222
At least one tab open in Chrome
Node.js 22+
Environment variable: BROWSERBASE_API_KEY

Setup

Install dependencies before first use:

cd .claude/skills/cookie-sync && npm install

Usage

Basic — sync all cookies

node .claude/skills/cookie-sync/scripts/cookie-sync.mjs

Creates a persistent context with all your Chrome cookies. Outputs a context ID.

Filter by domain — only sync specific sites

node .claude/skills/cookie-sync/scripts/cookie-sync.mjs --domains google.com,github.com

Matches the domain and all subdomains (e.g. google.com matches accounts.google.com, mail.google.com, etc.)

Refresh cookies in an existing context

node .claude/skills/cookie-sync/scripts/cookie-sync.mjs --context ctx_abc123

Re-injects fresh cookies into a previously created context. Use this when cookies have expired.

Verified browser mode

node .claude/skills/cookie-sync/scripts/cookie-sync.mjs --verified

Enables Browserbase Identity with a Verified browser to improve access on protected sites. Recommended for sites like Google that fingerprint browsers.

Residential proxy with geolocation

node .claude/skills/cookie-sync/scripts/cookie-sync.mjs --proxy "San Francisco,CA,US"

Routes through a residential proxy in the specified location. Format: "City,ST,Country" (state is 2-letter code). Helps match your local IP's geolocation so auth cookies aren't rejected.

Combine flags

node .claude/skills/cookie-sync/scripts/cookie-sync.mjs --domains github.com,google.com --verified --proxy "San Francisco,CA,US"

Browsing Authenticated Sites

After syncing, use the browse CLI with the context ID:

SESSION_JSON="$(browse cloud sessions create --context-id <ctx-id> --persist --keep-alive)"
SESSION_ID="$(echo "$SESSION_JSON" | jq -r .id)"
CONNECT_URL="$(echo "$SESSION_JSON" | jq -r .connectUrl)"

browse open https://mail.google.com --cdp "$CONNECT_URL"

The --persist flag on browse cloud sessions create saves any new cookies or state changes back to the context when the cloud session is released, keeping the session fresh for next time.

Full workflow example:

# Step 1: Sync cookies for Twitter
node .claude/skills/cookie-sync/scripts/cookie-sync.mjs --domains x.com,twitter.com
# Output: Context ID: ctx_abc123

# Step 2: Browse authenticated Twitter
SESSION_JSON="$(browse cloud sessions create --context-id ctx_abc123 --persist --keep-alive)"
SESSION_ID="$(echo "$SESSION_JSON" | jq -r .id)"
CONNECT_URL="$(echo "$SESSION_JSON" | jq -r .connectUrl)"

browse open https://x.com/messages --cdp "$CONNECT_URL"
browse snapshot
browse screenshot
browse stop
browse cloud sessions update "$SESSION_ID" --status REQUEST_RELEASE

Reusing Contexts for Scheduled Jobs

Contexts persist across sessions, making them ideal for scheduled/recurring tasks:

Once (laptop open): Run cookie-sync → get a context ID
Scheduled jobs: Create a Browserbase session with browse cloud sessions create --context-id <ctx-id> --persist --keep-alive, then attach with browse open <url> --cdp <connectUrl> — no local Chrome needed
Re-sync as needed: When cookies expire, run cookie-sync again with --context <ctx-id> to refresh

Troubleshooting

"No DevToolsActivePort found" → Enable chrome://flags/#allow-remote-debugging if your browser build exposes it, or launch with --remote-debugging-port=9222 and set CDP_URL=ws://127.0.0.1:9222
"No open page targets found" → Open at least one tab in Chrome
"WebSocket error" → Chrome may be hung; force quit and reopen it
Cookies expired in context → Re-run cookie-sync with --context <id> to refresh
Auth rejected by site → Try adding --verified and/or --proxy with a location near you

View source ↗

File metadata

name: cookie-sync
description: Sync cookies from local Chrome to a Browserbase persistent context so the browse CLI can access authenticated sites. Use when the user wants to browse as themselves, sync cookies, or log into sites via Browserbase.
compatibility: "Requires Node.js 22+, a local Chromium-based browser (Chrome, Brave, Edge) with remote debugging enabled, and BROWSERBASE_API_KEY. Run `npm install` in the skill directory before first use."
license: MIT
allowed-tools: Bash

View original text

---
name: cookie-sync
description: Sync cookies from local Chrome to a Browserbase persistent context so the browse CLI can access authenticated sites. Use when the user wants to browse as themselves, sync cookies, or log into sites via Browserbase.
compatibility: "Requires Node.js 22+, a local Chromium-based browser (Chrome, Brave, Edge) with remote debugging enabled, and BROWSERBASE_API_KEY. Run `npm install` in the skill directory before first use."
license: MIT
allowed-tools: Bash
---

# Cookie Sync — Local Chrome → Browserbase Context

Exports cookies from your local Chrome and saves them into a Browserbase **persistent context**. After syncing, use the `browse` CLI to open authenticated sessions with that context.

Supports **domain filtering** (only sync cookies you need) and **context reuse** (refresh cookies without creating a new context).

## Prerequisites

- Chrome (or Chromium, Brave, Edge) with remote debugging enabled
- If your browser build exposes `chrome://flags/#allow-remote-debugging`, enable it and restart the browser
- Otherwise, launch with `--remote-debugging-port=9222 --user-data-dir=/tmp/chrome-debug` and set `CDP_URL=ws://127.0.0.1:9222`
- At least one tab open in Chrome
- Node.js 22+
- Environment variable: `BROWSERBASE_API_KEY`

## Setup

Install dependencies before first use:

```bash
cd .claude/skills/cookie-sync && npm install
```

## Usage

### Basic — sync all cookies

```bash
node .claude/skills/cookie-sync/scripts/cookie-sync.mjs
```

Creates a persistent context with all your Chrome cookies. Outputs a context ID.

### Filter by domain — only sync specific sites

```bash
node .claude/skills/cookie-sync/scripts/cookie-sync.mjs --domains google.com,github.com
```

Matches the domain and all subdomains (e.g. `google.com` matches `accounts.google.com`, `mail.google.com`, etc.)

### Refresh cookies in an existing context

```bash
node .claude/skills/cookie-sync/scripts/cookie-sync.mjs --context ctx_abc123
```

Re-injects fresh cookies into a previously created context. Use this when cookies have expired.

### Verified browser mode

```bash
node .claude/skills/cookie-sync/scripts/cookie-sync.mjs --verified
```

Enables Browserbase Identity with a Verified browser to improve access on protected sites. Recommended for sites like Google that fingerprint browsers.

### Residential proxy with geolocation

```bash
node .claude/skills/cookie-sync/scripts/cookie-sync.mjs --proxy "San Francisco,CA,US"
```

Routes through a residential proxy in the specified location. Format: `"City,ST,Country"` (state is 2-letter code). Helps match your local IP's geolocation so auth cookies aren't rejected.

### Combine flags

```bash
node .claude/skills/cookie-sync/scripts/cookie-sync.mjs --domains github.com,google.com --verified --proxy "San Francisco,CA,US"
```

## Browsing Authenticated Sites

After syncing, use the `browse` CLI with the context ID:

```bash
SESSION_JSON="$(browse cloud sessions create --context-id <ctx-id> --persist --keep-alive)"
SESSION_ID="$(echo "$SESSION_JSON" | jq -r .id)"
CONNECT_URL="$(echo "$SESSION_JSON" | jq -r .connectUrl)"

browse open https://mail.google.com --cdp "$CONNECT_URL"
```

The `--persist` flag on `browse cloud sessions create` saves any new cookies or state changes back to the context when the cloud session is released, keeping the session fresh for next time.

**Full workflow example:**

```bash
# Step 1: Sync cookies for Twitter
node .claude/skills/cookie-sync/scripts/cookie-sync.mjs --domains x.com,twitter.com
# Output: Context ID: ctx_abc123

# Step 2: Browse authenticated Twitter
SESSION_JSON="$(browse cloud sessions create --context-id ctx_abc123 --persist --keep-alive)"
SESSION_ID="$(echo "$SESSION_JSON" | jq -r .id)"
CONNECT_URL="$(echo "$SESSION_JSON" | jq -r .connectUrl)"

browse open https://x.com/messages --cdp "$CONNECT_URL"
browse snapshot
browse screenshot
browse stop
browse cloud sessions update "$SESSION_ID" --status REQUEST_RELEASE
```

## Reusing Contexts for Scheduled Jobs

Contexts persist across sessions, making them ideal for scheduled/recurring tasks:

1. **Once (laptop open):** Run cookie-sync → get a context ID
2. **Scheduled jobs:** Create a Browserbase session with `browse cloud sessions create --context-id <ctx-id> --persist --keep-alive`, then attach with `browse open <url> --cdp <connectUrl>` — no local Chrome needed
3. **Re-sync as needed:** When cookies expire, run cookie-sync again with `--context <ctx-id>` to refresh

## Troubleshooting

- **"No DevToolsActivePort found"** → Enable `chrome://flags/#allow-remote-debugging` if your browser build exposes it, or launch with `--remote-debugging-port=9222` and set `CDP_URL=ws://127.0.0.1:9222`
- **"No open page targets found"** → Open at least one tab in Chrome
- **"WebSocket error"** → Chrome may be hung; force quit and reopen it
- **Cookies expired in context** → Re-run cookie-sync with `--context <id>` to refresh
- **Auth rejected by site** → Try adding `--verified` and/or `--proxy` with a location near you

Review the source

Skill source recorded

Skill instructions are recorded. This is not a runtime test, safety guarantee or compatibility certification.

Review before install: Avoid automatic install

Dependency or permission surface needs review
Permission surface may require sandboxing
The skill transfers sensitive cookies to a third-party service (Browserbase), which is the intended functionality but should be clearly highlighted as a privacy consideration.
The SKILL.md metadata includes a non-standard 'compatibility' field, which may be ignored by some parsers but is not harmful.

Open full audit

Listed tools are metadata hints, not tested compatibility. Agent prompts are suggested handoffs.

Start with one small task

1Read the source. Confirm the input, expected output, dependencies and permissions.
2Ask your agent for a plan. Approve setup and any costs before running a small isolated test.
3Check the output and changed files. Report only what actually ran; keep the source revision for reproduction.

Check the source for dependencies, API keys and third-party costs. A public repository does not mean every service is free.

Source & trust

Indexed

Repository metadata and review signals are advisory. Popularity, source discovery and successful execution are different facts.

License: MIT
Version: 1.0.0
Last GitHub push: Sep 2, 2026
Registry updated: Sep 2, 2026
Instruction path: skills/cookie-sync/SKILL.md @ 6811ca311633

Version reported in registry metadata; check source releases before relying on it.

Quality

83/100

Strong

Trust

62/100

Sandbox only

Audit

80/100

Needs review

Agent access

This page exposes the same decision, trust, audit, use-case, and install signals through the Registry API, so agents can rank this skill without scraping the UI.

Open install API LLM text format Open manifest Auto-resolve Plan

More details

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Creator: browserbase
Source: browserbase/skills
Indexed by: OpenAgentSkill community index

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