About
About Vassal Agent
Vassal Agent is a desktop AI browser agent for Mac and Windows: a browser with an AI agent built in. You type a job in plain words, and it does the searching, reading, copying and form-filling in your own signed-in browser, then stops and asks before it sends, posts, pays or deletes anything.
It adapts to the business it works for. Tell it in a sentence, or give it your website, and it learns what you do, who you serve and how you like things written. Its jobs, drafts and suggestions follow from that, and it keeps learning as you correct it. When it notices you doing the same work again and again, it offers to take it over, at most once a day.
- What it is
- A desktop browser (Chromium) with an AI agent built in
- Made by
- Vassal Agent, an independent software business in Florida, USA
- Platform
- Mac (macOS 12 or newer) and Windows 10 and 11
- AI it uses
- Yours: Claude or ChatGPT
- Includes
- Set up for you on a call, same-day support
- Teams
- Share workflows, rules and know-how with your staff in one signed team file
- Safety model
- Asks before every send, post, submit, payment or delete
- Contact
- team@vassal.llc
What Vassal Agent does
Most of the work in a small business happens in a browser: searching sites and directories, reading profiles, copying details into a sheet, filling in forms, checking a page every morning, writing the first message to someone new. Vassal Agent does that work for you. You describe the job the way you would to an assistant, and it opens the pages, reads them and brings back the result, usually as a table with sources.
- Research and lists. Find companies, people or listings that match what you describe, and return a clean table with links.
- Outreach drafts. Write a first note to each person on the list, in your voice, and wait for you to approve each send.
- Forms and data entry. Fill in applications, CRM records and portals, and stop at the Submit button.
- Monitoring. Watch a page, a job board or an inbox on a schedule and tell you what changed.
- Repeatable workflows. Do a job once while it watches, and it becomes a workflow you can run by hand or on a schedule.
Results can be copied as a table, saved as a spreadsheet, sent to Google Sheets or emailed.
How it works
Vassal Agent is a desktop app with three parts in one window: a real Chromium browser, an assistant panel, and a governor that checks every action the agent takes against your rules before it happens.
- You sign in to your sites yourself, once, in the app's browser. Your cookies and passwords stay on your computer.
- You connect your AI. The assistant runs on your own Claude plan, or you connect another AI tool.
- You type a job. The agent works in your browser while a live panel shows every page it opens and everything it reads.
- It asks before anything leaves. Before it sends, posts, submits, pays or deletes, it stops and shows you what it is about to do. Nothing happens until you press Allow.
The full walkthrough, screen by screen, is on How it works.
Who it is for
Vassal Agent is for the person who owns the result: a founder, an owner, a partner, anyone who knows exactly what needs doing and loses hours to the clicking in between. It is not built for one industry. It learns yours, whether that is recruiting, an agency, sales or something else, and fits the jobs to how your business works.
It is a poor fit if your work does not happen in a browser, if you need a phone-calling assistant, or if you want an AI that acts with no human in the loop.
Getting it
We built it to run our own business, and we set it up for yours. Contact us.
Privacy
The app has no analytics. Optional crash reports are off unless you turn them on, and they never include your pages, jobs or what you type. Your browsing, logins, chats with the assistant and activity log stay on your computer. The page content the AI reads to do a job goes to your AI provider under your own account; we never receive it. Details are in the privacy policy.
Contact
Email team@vassal.llc. A person answers. For security reports, see security.txt.
Questions
Who makes Vassal Agent?
Vassal Agent is made by a small independent software business in Florida that sells under the Vassal Agent name. You can reach a person at team@vassal.llc.
Is Vassal Agent a Chrome extension?
No. It is its own desktop app with a real Chromium browser inside. You sign in to your sites in that browser once, and the agent works there.
Does Vassal Agent include an AI model?
No. It uses the AI plan you already have. The built-in assistant runs on Claude, and Claude Pro is enough. It runs on ChatGPT too, through OpenAI's Codex.
Is the name related to anything else called Vassal?
Vassal Agent is a software product. It is not affiliated with other companies, games or products that use the word vassal.
See it on your own work.
We built it to run our own business, and we set it up for yours.