How is Actionbook different from OpenAI’s Codex Chrome extension?

Both run in your real Chrome with your real logins, and that part is genuinely similar. The differences sit further down the stack: Actionbook lets you bring your own LLM (Claude, Gemini, Perplexity, OpenClaw, Hermes, ChatGPT) instead of locking you to OpenAI’s GPT-5-Codex family. Actionbook also exposes the browser as an open MCP server, so any MCP-compatible client (Cursor, Claude Desktop, n8n, a custom agent loop) can drive your Chrome through it. The Codex extension is driveable only by OpenAI’s Codex desktop app.

Does Actionbook require a ChatGPT subscription?

No. The Codex Chrome extension is bundled with paid ChatGPT plans (Plus / Pro / Business / Enterprise) and stops working without one. Actionbook is independent; bring whichever AI account you already pay for, or use a free-tier model.

I’m in the EU / UK / on Linux. Will Actionbook work?

Yes. The Codex Chrome extension is not available in the EU or UK at launch, and it requires the Codex desktop app, which ships macOS and Windows only. Actionbook is a Chrome extension that runs wherever Chrome runs, with no regional gate and no platform restriction.

Can I use Actionbook with Codex itself?

Yes. Codex (the CLI and desktop app) supports MCP servers via its config, so you can wire Actionbook into Codex as a browser tool alongside Codex’s native Chrome plugin. The two are complementary: use Codex’s plugin when you want OpenAI in the driver’s seat; use Actionbook when you want any other agent in the driver’s seat, or when you want the same browser tool exposed to multiple agents at once.

Is the per-host approval flow the same?

The Codex extension confirms once per new host (allow for this chat / always allow this host / decline). Actionbook routes every consequential write through a human-in-the-loop approval prompt with the exact MCP cmd shown, which is closer to per-action than per-host. Read-only actions on hosts you’ve already trusted run unattended.

Is Actionbook affiliated with OpenAI?

No. Actionbook is an independent product, not made by or endorsed by OpenAI. It works with OpenAI’s models (ChatGPT, Codex via API) the same way it works with Anthropic, Google, Perplexity, and any other MCP-compatible client.

For OpenAI users

A Codex Chrome extension alternative that brings your own AI

OpenAI’s Codex Chrome extension runs in your real browser, but only with GPT-5-Codex on a paid ChatGPT plan. Actionbook does the same thing with any MCP-compatible client.

Connect your agent See how it compares

Three things the Codex Chrome extension can't do

Both products run in your real Chrome with your real logins, and that part is genuinely similar. The differences sit one layer down — model choice, regional access, and what can drive the browser.

Bring your own AI

Drive your real Chrome with Claude, Gemini, Perplexity, OpenClaw, Hermes, or any MCP-compatible client. The Codex Chrome extension only runs GPT-5-Codex.

Available where Chrome is

The Codex extension is gated to paid ChatGPT plans, skips the EU and UK at launch, and requires the macOS / Windows Codex desktop app. Actionbook ships wherever Chrome ships.

Driveable from any orchestrator

Cursor, Claude Desktop, Windsurf, n8n, LangGraph, your own loop — anything that speaks MCP can drive Actionbook. The Codex extension only accepts commands from OpenAI’s Codex desktop app.

Any agent, your choice

1. Pick the agent
Claude for outreach drafts; GPT for code synth; Perplexity for citations.
2. Same Chrome session
All three drive your real Chrome through one MCP server.
3. Approve where it matters
Read actions stream; write actions hold for your approval.

Actionbook MCP

›clicklinkedin.com · target profile
›readprofile + last 5 posts
›typeinmail compose · draft
›clicksalesforce.com · log activity

Same browser, any AI

OpenAI’s Codex Chrome extension runs in your real Chrome with your real logins. So does Actionbook. The difference is on the other side of the wire: Actionbook is model-agnostic. Bring Claude, Gemini, Perplexity, OpenClaw, Hermes, or any client that speaks MCP. Actionbook drives Chrome for all of them.

No model lock-in: Use the LLM you already pay for. Switch any time.
No ChatGPT subscription required: Codex Chrome extension is bundled with paid ChatGPT plans only. Actionbook stands alone.
No regional or OS gate: The Codex extension is unavailable in the EU/UK and requires its macOS/Windows desktop app. Actionbook runs wherever Chrome runs.

Connect your agent

actionbook.dev · MCP

Awaiting approval

Claude is asking Actionbook to send a LinkedIn connection request with a custom note. You see the cmd, the target, and the diff before it commits.

actionbook browser run-code "await sendConnectRequest(profile, note)"

Drive your browser from any client, not just OpenAI’s app

The Codex Chrome extension only accepts commands from OpenAI’s Codex desktop app. Actionbook exposes Chrome as an open MCP server, so anything that speaks MCP can drive it: Cursor, Claude Desktop, Windsurf, n8n, LangGraph, or your own agent loop.

Server-side, not client-side: Actionbook is the MCP server; your LLM client is whatever you prefer.
Multi-agent friendly: Run planning, execution, and verification across different models in one session.
Wire into your own orchestrator: n8n, LangGraph, custom agent loops; Actionbook drops in as a tool, not a host app.

Connect your agent

One sweep, three tools, side by side

A realistic prosumer LinkedIn outreach sweep run end-to-end through each product. Where the products diverge is where you decide which one fits your stack.

Scenario

“From my EU desk, pull 20 LinkedIn prospects, draft first-touch InMails with Claude for warmth, re-rank with GPT for facts, schedule the sweep nightly through n8n — and queue every send for my approval.”

Step

Actionbook

this site

Codex extension

by OpenAI

Claude for Chrome

by Anthropic

Open from your EU desk

Launch the agent from a Paris or London office.

Runs wherever Chrome runs.

Codex extension not available in EU / UK.

Available in EU / UK.

Open from your EU desk

Launch the agent from a Paris or London office.

Actionbook: Runs wherever Chrome runs.
Codex extension: Codex extension not available in EU / UK.
Claude for Chrome: Available in EU / UK.

Pull 20 LinkedIn prospects

Filter by role, company size, recent post engagement.

Your real LinkedIn session.

Same — extension drives Chrome.

LinkedIn is on Anthropic’s allowlist.

Pull 20 LinkedIn prospects

Filter by role, company size, recent post engagement.

Actionbook: Your real LinkedIn session.
Codex extension: Same — extension drives Chrome.
Claude for Chrome: LinkedIn is on Anthropic’s allowlist.

Draft first-touch InMails with Claude

Use Claude for tone, references each profile’s recent post.

Any model you bring.

GPT-5-Codex only.

Claude is the native model.

Draft first-touch InMails with Claude

Use Claude for tone, references each profile’s recent post.

Actionbook: Any model you bring.
Codex extension: GPT-5-Codex only.
Claude for Chrome: Claude is the native model.

Fact-check with a second model

Re-rank every draft through GPT for factual accuracy.

Mix Claude + GPT in one session.

GPT only — no second model.

Claude only — no second model.

Fact-check with a second model

Re-rank every draft through GPT for factual accuracy.

Actionbook: Mix Claude + GPT in one session.
Codex extension: GPT only — no second model.
Claude for Chrome: Claude only — no second model.

Wire into n8n for scheduling

Run the sweep nightly from your existing automation tool.

Open MCP — n8n, LangGraph, Cursor all work.

Only OpenAI’s Codex desktop app can drive it.

Only Claude’s app can drive it.

Wire into n8n for scheduling

Run the sweep nightly from your existing automation tool.

Actionbook: Open MCP — n8n, LangGraph, Cursor all work.
Codex extension: Only OpenAI’s Codex desktop app can drive it.
Claude for Chrome: Only Claude’s app can drive it.

Show me each send for approval

Inspect the exact InMail before it leaves your browser.

Per-write approval, every time.

Per-host trust prompt, not per-write.

Show me each send for approval

Inspect the exact InMail before it leaves your browser.

Actionbook: Per-write approval, every time.
Codex extension: Per-host trust prompt, not per-write.
Claude for Chrome: Per-host trust prompt, not per-write.

How Actionbook compares to the Codex Chrome extension

The five things that actually matter when you're picking a tool to drive your real browser. Where Actionbook and the Codex extension agree, both checks line up. Where Actionbook is the only check, that's the gap.

Capability

Actionbook

this site

Codex Chrome extension

by OpenAI

Claude for Chrome

by Anthropic

Works in your real Chrome

Real tabs, real cookies. Not a cloud browser, not a sandbox.

Uses logins you already have

Works with the AI you already use

Bring ChatGPT, Claude, Gemini, Perplexity, OpenClaw, or Hermes. No vendor lock-in.

No blocked site categories

Finance, crypto, banking, adult content. You decide which sites are in scope.

Asks you before sending messages

Every connection request, message, comment, or post waits for your approval.

Works in your real Chrome

Real tabs, real cookies. Not a cloud browser, not a sandbox.

Actionbook
Codex Chrome extension
Claude for Chrome

Uses logins you already have

Actionbook
Codex Chrome extension
Claude for Chrome

Works with the AI you already use

Bring ChatGPT, Claude, Gemini, Perplexity, OpenClaw, or Hermes. No vendor lock-in.

Actionbook
Codex Chrome extension
Claude for Chrome

No blocked site categories

Finance, crypto, banking, adult content. You decide which sites are in scope.

Actionbook
Codex Chrome extension
Claude for Chrome

Asks you before sending messages

Every connection request, message, comment, or post waits for your approval.

Actionbook
Codex Chrome extension
Claude for Chrome

You don't switch — you add

Keep the Codex Chrome extension installed if you want. Actionbook drops into the same Chrome profile and uses the same tabs, cookies, and logins. Getting started is three steps.

Install Actionbook

One-click install from the Chrome Web Store. Sits next to extensions you already use.

Connect your agent

Point your existing client at edge.actionbook.dev/mcp. No new accounts, no new browser.

Run your first action

Open a tab where you’re already signed in and ask. Actionbook does the rest, with approval where it matters.

Frequently Asked Questions about Codex extension alternatives

Comparing OpenAI's Codex Chrome extension to Actionbook? Here are answers to the questions people ask most about model choice, regional access, and running both.

Both run in your real Chrome with your real logins, and that part is genuinely similar. The differences sit further down the stack: Actionbook lets you bring your own LLM (Claude, Gemini, Perplexity, OpenClaw, Hermes, ChatGPT) instead of locking you to OpenAI’s GPT-5-Codex family. Actionbook also exposes the browser as an open MCP server, so any MCP-compatible client (Cursor, Claude Desktop, n8n, a custom agent loop) can drive your Chrome through it. The Codex extension is driveable only by OpenAI’s Codex desktop app.
Yes. Codex (the CLI and desktop app) supports MCP servers via its config, so you can wire Actionbook into Codex as a browser tool alongside Codex’s native Chrome plugin. The two are complementary: use Codex’s plugin when you want OpenAI in the driver’s seat; use Actionbook when you want any other agent in the driver’s seat, or when you want the same browser tool exposed to multiple agents at once.