Hellhound Privacy Policy

Last updated: 11 October 2026

Hellhound is a Windows desktop app made by Ahmet Ardıl Ural, an independent developer ("we", "us"), who first built it for personal use. This policy explains what Hellhound does with your information, what leaves your computer, and what you can do about it. Contact: support@hellhoundai.com.

The short version

Hellhound is not an AI model or an AI agent. It is a bridge: it lets AI agents you already use, Claude Code and Codex, work together in one room on your computer.
Hellhound itself does not go online, apart from two things: checking your licence with the Microsoft Store (through Windows), and sending a "Contact us" message when you press Send. The AI agents you use in it, Claude Code and Codex, connect to the internet through their own programs to do what you ask them.
Hellhound runs on your computer. It does not automatically send your conversations or files to us. Hellhound has no account system, no analytics, no advertising and no automatic crash reporting.
Hellhound's own copies of your conversations and files stay on your computer, in its data folder, until you delete them. What you give an agent goes to the company that runs it (see below).
When you ask an AI agent something, Hellhound hands it to Claude Code and/or Codex, programs from Anthropic and OpenAI that you installed and signed in to yourself. They send it to Anthropic or OpenAI under your own account, and those companies' privacy policies apply.
In Read, Build and Whole computer, an agent can see your screen, and in Build and Whole computer it can also click, type and open programs. Every agent starts in Talk, which gives no screen, and Hellhound asks you before an agent first gets one of these modes in a room. What an agent sees on your screen goes to the company that runs it, like anything else it reads.
The only thing Hellhound sends to us is a message you write in its "Contact us" box, when you press Send. The only personal information it asks for is your email address, and we use it only to reply to you.

What Hellhound stores on your computer

Hellhound keeps the following in its data folder on your computer, a folder inside your Windows user profile that Windows keeps for Hellhound:

Your rooms: the messages you and the agents write, room names and settings, which agents are in a room, what they are allowed to do and which modes you have allowed them, and notices the room shows you.
Web activity records: the searches and addresses an agent's program reports, so you can see them.
What an agent did on your screen: a notice in the room for each action, naming the window and the button or box (for example "click Button Add in OBS"), and each program it opened. Not the pictures of your screen.
Actions whose result was not clear: the program, the window's title and what was tried, until you check it and unlock the program.
Images an agent made with its own image tool, so you can see and save them.
Copies of files you attach to a room. Attaching a file never changes the original. A folder you share "where it is" is not copied.
Settings: for example, where Claude Code or Codex is installed, if you pointed Hellhound to it, and the folder you chose for the agents to work in.
Session identifiers the agents' programs give back, so a conversation can continue.
A small record of the agent programs Hellhound has started (name, location, start time), so it can stop them safely, even after a crash.
What the Microsoft Store last said about your licence (trial and when it ends, or bought), so Hellhound keeps working when the Store cannot be reached for a while.
The email address of your last "Contact us" message that went through, so you do not have to type it again.

Hellhound does not ask you for account passwords, sign-in tokens or API keys, and does not store them: you sign in inside Claude Code and Codex, through Anthropic's and OpenAI's own sign-in. Do not put passwords, tokens or API keys in conversations or in "Contact us" messages. Hellhound may show which account a program is signed in to, but only masked (for example l***@example.com), and it does not store it.

What leaves your computer, and where it goes

To Anthropic and OpenAI, through the programs you use. Claude Code (by Anthropic) and Codex (by OpenAI) receive the messages of the room you send to them. They can also read files and use your screen according to the mode you give each agent in the room:

Talk: the conversation only. Every agent starts here.
Read: may also read files, including outside the folder you chose, and see your screen.
Build › This folder: may also create and change files in the folder you chose and, depending on the program, run commands there; on your screen it may also open programs, click and type, and Hellhound asks you once for each program first.
Build › Whole computer: may read and change files, and run commands, anywhere your Windows account can, and open programs, click and type without asking.

Hellhound asks you before an agent first gets Read, Build or Whole computer in a room, and remembers your answer for that agent in that room. Moving an agent back to Talk takes the screen away.

What an agent reads may be sent to the company that runs it, to produce an answer. Agents' programs may also search the web and open pages. Hellhound says this in the app, next to each agent's permissions.

Your CLAUDE.md files. If you have a CLAUDE.md instructions file, in your own Claude settings folder or in the project folder, Claude Code receives its text with your messages, so Claude follows your instructions: Hellhound passes it on, or, in Whole computer, Claude Code loads it itself. It goes to Anthropic like the rest of the conversation.

Your screen. In Read, Build and Whole computer, an agent can take pictures of the windows on your screen and read what is in them: the names of buttons and menus and the text in boxes. Hellhound never reads or types into a password box (a picture shows only what the screen shows), and never lets an agent use Hellhound's own windows. These pictures and contents go to the agent's program and, through Claude Code or Codex, to Anthropic or OpenAI. This may include private information visible on your screen, and those companies' terms and privacy settings apply. Hellhound does not save the pictures; the agent's program may keep them in its own records. When an agent clicks and types, it can change or send things just as if you had done it.

Hellhound was built by reading and following Anthropic's and OpenAI's published documentation and terms for Claude Code and Codex. It runs the official programs you installed, unmodified; you sign in to them yourself, on Anthropic's or OpenAI's own sign-in page, and Hellhound never sees, stores or shares your password or sign-in tokens. It does not pay for, resell or route your usage. Hellhound is not made, endorsed or approved by Anthropic or OpenAI.

This happens under your own agreement with Anthropic or OpenAI, and we have no access to these conversations. Those companies may use conversations to improve their models unless you turn this off in your account settings with them. See their privacy policies:

Anthropic: anthropic.com/legal/privacy
OpenAI: openai.com/policies/privacy-policy

To us, only if you contact us (see below).

To Microsoft, for your licence. To know whether your copy is a trial or bought, Hellhound asks Windows, which checks with the Microsoft Store. This does not tell us who you are.

Hellhound itself sends nothing else. It has no analytics, telemetry, advertising or automatic crash reporting, and no update server of its own: updates come through the Microsoft Store. The agent programs, and commands an agent runs on Build, can make their own network connections, as far as their environment allows.

Purchases

If you buy Hellhound in the Microsoft Store, Microsoft handles the payment. We do not receive your payment details. Microsoft gives us aggregated reports (such as sales, downloads and usage), as described in the Microsoft Privacy Statement.

If you contact us

Hellhound has a "Contact us" box. It sends nothing until you press Send. Then it sends:

the email address you type, so we can reply,
the message you write, and
Hellhound's version and your Windows version, to help us fix problems.

The only personal information we ask for is your email address. We use your email address only to reply to you and follow up on your feedback. We use what you write to solve the problem you reported and to improve Hellhound. Nothing from your rooms is added. If you ran into a problem, please describe it without including personal information.

Like any internet connection, sending also reveals your IP address to the service that receives it. We use it only to stop more than a few messages a minute from one address, and we do not store it.

Your message reaches our mailbox through the services that deliver it: Cloudflare (which receives it), Resend (which delivers it as an email) and Google (Gmail), where our mailbox is. They may keep delivery and security records for a limited time under their own policies; Resend, for example, normally keeps delivered emails for 30 days (Resend's policy). We keep your message only as long as we need it to answer you and fix the problem you reported, and then delete it. The same applies if you email us directly. Apart from these services, we share it only where the law requires us to.

Legal basis. When you ask for help with a copy of Hellhound you have bought or are trying, we process your message to provide the product and its support under our agreement with you (GDPR Art. 6(1)(b)). For other messages, such as feedback and suggestions, and to keep the relay from being misused, we rely on our legitimate interest in answering people, improving Hellhound and protecting the service (GDPR Art. 6(1)(f)); you can object to this at any time.

Transfers abroad. Cloudflare, Resend and Google may process your message outside your country, including in the United States.

How it is secured

Hellhound sends a "Contact us" message to our relay over an encrypted connection (HTTPS), and the relay passes it to Resend over HTTPS. Its delivery as an email to our mailbox depends on the email providers' own encryption.
Hellhound does not ask for or store your passwords, sign-in tokens or API keys.
Hellhound does not separately encrypt its local database or its copies of attached files. They are in your Windows user profile, where your Windows account's permissions control access; whether the disk is encrypted depends on how Windows is set up (for example, device encryption or BitLocker).

Deleting your data

Your data is on your computer, and you control it. Deleting a room in Hellhound (the × beside it) removes its messages and Hellhound's copies of its attached files.
When you uninstall Hellhound, Windows is designed to remove the data folder it keeps for the app. Back up anything you want to keep first. To clear it without uninstalling, use Windows Settings › Apps › Installed apps › Hellhound › Advanced options › Reset.
Hellhound's default work folder, the one agents use if you never chose a project folder, is Hellhound in your Documents folder (from version 1.0.2; Hellhound 2 or a later number if a folder of yours already has that name). What the agents make there is yours: uninstalling Hellhound does not remove it, and you delete it like any other folder. Before 1.0.2 it was inside the data folder above and went with it; 1.0.2 copies its files to Documents the first time it opens and leaves the old copy where it was. If that copy cannot finish, what was copied stays in Documents, marked as unfinished; Hellhound never uses it, never deletes it, and shows you where it is. A project folder you chose yourself is yours and is not touched.
Claude Code and Codex keep their own records of the sessions they had, in their own folders, managed by their own settings.
To delete what Anthropic or OpenAI keep, use their own settings.
To have a message you sent us deleted, ask us (see "Your rights").

Children

Hellhound is not intended for anyone under 18. The AI services it works with have their own age requirements.

Your rights

Because Hellhound keeps your data on your computer, we usually hold nothing about you. If you have contacted us, you can ask us whether we hold data about you and what, ask us to correct or delete it, restrict or object to its use, or receive a copy of it, under the data protection laws that apply to you, such as the EU and UK GDPR. Write to support@hellhoundai.com. We answer without undue delay and within the time limit set by the law that applies. You can also complain to the data protection authority where you live.

Changes

If this policy changes, we will update the date above and describe the change in Hellhound's release notes.

Contact

Ahmet Ardıl Ural (Hellhound)
Email: support@hellhoundai.com, or the "Contact us" box in Hellhound.