New Context Bridge: hand a chat to another agent

Herdbell is a tiny Mac app that keeps an eye on Claude Code, Codex, Cursor and Antigravity. When one needs you, your shortcut opens a bar right over your work to approve, reply or hand off.

Launch price $9.99 · No subscription · macOS 14 Sonoma or later

Add rate limitingCodex ·
Pricing pageCursor ·
Fix CI pipelineCodex ·
Refactoring the storeClaude Code ·
Update API referenceAntigravity ·

Run ?

esc

said

Handoff

GoalSplit the store into smaller, testable pieces

DoneMoved sessions into SessionStore · +3 more

Still openMove saving off the main thread

Files6 changed · Store.swift, SessionStore.swift

Commands4 run

Last testswift test · 128 passed

Save HANDOFF.md SOpen

It's live. Click the Herdbell icon in the menu bar, or press your shortcut.

Simple. Watches them all.

Let Claude Code refactor the store. Ask Codex for a rate limiter. Have Cursor polish the pricing page, and Antigravity tidy the docs. Then grab a while they work. When one needs a yes or a reply, Herdbell lights up your cursor. Answer it from one bar and get straight back to your code.

The herd

Every agent gets a face. Read the roomin one glance.

Each agent is a little bot. Its face and color tell you what it's doing, and the bell in your menu bar tells you when one needs you. Go on, change what they're doing.

Herdbell

Refactoring the store…

Claude Code

Can I run npm install?

Codex

Wire up checkout next?

Cursor

Done · 3 links fixed

Antigravity

How it works

Three moments. That's the wholeapp.

Herdbell stays out of sight until an agent needs you, then gets you back to your own work in seconds.

Codex needs permission
01

Your pointer glows

A soft rim in the right color says something needs you. Sound and notifications stay off unless you turn them on.

02

Your shortcut opens the bar

Herdbell opens right where you are: a search bar, with every agent one arrow away.

Run npm install?Codex · api
✓ Allowed · Codex is running it
03

Answer, and get back to work

Allow a command, send a reply, or hand the chat to another agent. Then Herdbell gets out of the way.

Features

Small app. Everything you need.

Built for people who run more than one agent at a time, and would rather not babysit any of them.

Add rate limitingapi · Codex4m
Pricing pageweb · Cursor18m
Refactoring the storeherdbell · Claude Code12m
Update API referencedocs · Antigravity34m

Every session, one list

Agent, project, status, what it's doing and for how long, all in one place and always up to date.

  • Needs permission
  • Waiting for reply
  • Finished
  • Something broke

A glow, not a ping

Your pointer lights up in the color of what's waiting. Point at one to see it.

Codex wants to run

npm install express-rate-limit

Approve or deny

Decide in one click. Risky commands ask twice, and if you're away, the agent asks you itself after 5 minutes.

Pricing page is done. Wire up checkout next?

Reply in a tap

Quick replies for the things you say all day, or type your own.

  1. Ran pnpm test
  2. Permission granted
  3. Edited 6 files

See what they did

Every command, edit and error, in order, for each session.

Connect in one click

Herdbell finds the agents on your Mac and connects through their own hooks. Your settings are backed up first.

Lives in the menu bar

It joins the Dock only while its dashboard is open. Its eyes go wide when something needs you.

Context Bridge

Hit a usage limit? Keep goingin another agent.

Herdbell reads the chat on your Mac and writes a short handoff: the goal, what's done, what's still open, the files and the commands. Paste it into another agent and carry on, without explaining the project again.

  1. 1Pick the chat in Herdbell and press ⌘H.
  2. 2Herdbell puts the handoff together, in about a second.
  3. 3Copy it, and paste it into the next agent.

Runs entirely on your Mac and never calls an AI model. The handoff is only as complete as what the chat and project contain.

Claude CodeUsage limit reached
CodexWaiting
Handoff · saas-webReady to build
## Goal

- Ship the marketing site and pricing page.

## Done

- Hero, features grid and footer

- Stripe checkout route in /api/checkout

## Decisions

- Next.js App Router, Tailwind, no UI kit

- Lifetime plan only, no subscriptions

## Still open

- Navbar overlaps below 380px

## Next

- Build the pricing cards

- Wire "Buy" to /api/checkout

- Run the e2e tests

A day with Herdbell

Four agents. One calm workday.

Codex wants to install a package

An amber glow near your pointer. Your shortcut, one click on Allow, and you are back in the docs.

Cursor has a question

"Wire up checkout next?" You tap a quick reply without leaving your editor.

Claude Code runs out of usage

You hand the chat off, paste it into Codex, and the frontend keeps moving.

Everything is done

Four agents, one calm afternoon. You never once went looking for them.

Privacy & performance

Native, local and light.

Herdbell is built in Swift, SwiftUI and AppKit, and what happens in your sessions never leaves your Mac.

Network · HerdbellLive
0 Bof session data sent from this Mac
  • Session data0 B
  • License checkOnly when needed
  • Update checkOnly when needed

No account login

No signing into AI providers and no API keys to paste.

No cloud backend

Agent monitoring happens entirely on your machine.

No extra AI costs

Herdbell never calls a model, so it never uses your tokens.

Lives in the menu bar

It sits in the menu bar, and shows in the Dock only while its dashboard is open.

Minimal footprint

Native code with very little background CPU and memory use.

Launch at login

Optional. Turn it on once and forget about it.

Network access is used only to check your license and for app updates.

Pricing

Pay once. Own it.

No subscription. One payment, and Herdbell is yours. The first 20 buyers get the launch price.

Launch price
$9.99

$24.99 Save 60%

one-time payment

Launch price for the first 20 buyers, then from $24.99

  • Use on 1 Mac. Moving to a new Mac? Deactivate the old one first
  • All features, including Context Bridge
  • Claude Code, Codex, Cursor & Antigravity
  • Lifetime updates
Buy for 1 Mac · $9.99

7-day money-back guarantee

Secure checkout by Dodo Payments, shown in your currency. Your license key arrives by email right away. Have a discount code? Enter it at checkout.

macOS 14 Sonoma or later

FAQ

Questions, answered.

Do I need to log in to my AI accounts or add API keys?

No. Herdbell connects to the agents already installed on your Mac through their supported local hooks. It never asks for credentials or API keys.

Which agents are supported?

Claude Code, OpenAI Codex, Cursor, and Google Antigravity at launch. More integrations are planned.

Will Herdbell mess with my agent configurations?

No. Herdbell keeps your existing settings and backs them up before adding its hooks. You can disconnect an agent at any time.

How does Context Bridge work without an AI model?

It pulls the goal, completed work, decisions, issues, and next steps out of your local session transcript and project files, then formats them as a continuation prompt. How complete the prompt is depends on what that data contains.

Does any of my data leave my Mac?

No. Session data stays local. Herdbell uses the network only to validate your license and check for updates.

How much does Herdbell cost?

Herdbell is a one-time purchase with no subscription: $24.99 for 1 Mac, $69.99 for 3 Macs or $109.99 for 5 Macs, with lower launch prices for the first 20 buyers (see Pricing). It includes lifetime updates and a 7-day money-back guarantee.

What do I need to run it?

A Mac running macOS 14 Sonoma or later, and at least one of Claude Code, OpenAI Codex, Cursor or Google Antigravity installed. Herdbell finds them for you during setup.

Will it slow down my Mac or my agents?

No. Herdbell is a native Mac app that uses very little CPU and memory (about 1% of a core when idle in our testing). It only listens to the small messages your agents already send, and never calls an AI model, so it uses none of your tokens.

What happens if Herdbell is closed?

Nothing breaks. Your agents carry on with their own prompts, as if Herdbell were not installed. When you open it again it picks up where you left off.

Can I approve commands from Herdbell for every agent?

For Claude Code, OpenAI Codex and Cursor, yes: Allow and Deny work in Herdbell. For Google Antigravity, Herdbell shows the request and you approve it in Antigravity itself. Replying when an agent finishes works for all four.

How does the license work on more than one Mac?

A key works on as many Macs as you bought (1, 3 or 5). To move it to a new Mac, deactivate it on the old one in Settings → License. Herdbell checks your license about once a week, with a 14-day grace period if you happen to be offline.

How do updates work?

Herdbell checks for updates automatically and installs a new version when you say so. Every update is signed, and only updates signed by Herdbell are accepted. Updates are free for life.

How do I disconnect an agent or delete my data?

On the Agents page, turn an agent off and Herdbell removes only its own hooks from that agent's settings. In Settings, Delete all my data forgets every chat, the activity log, attachments and drafts. Your settings and license stay.

Can I get a refund?

Yes. Every purchase has a 7-day money-back guarantee. If Herdbell isn't right for you, email support@herdbell.com within 7 days of buying and you get a full refund.

Is it a subscription?

No. You pay once and own it.

Feedback

Herdbell is young. Tell us what to make better.

Every message is read by the people who build it. Ideas, bugs, a kind word, all of it helps.

Prefer email?support@herdbell.com
How do you feel about it?
What's it about?

Goes straight to the people who build Herdbell.

Thank you!

We got it, and we read every message.

Every agent. One place.
Zero context lost.

Your agents keep working, and Herdbell lets you know when they need you.