This walkthrough is for people who have not used a terminal, API key, or JSON config file before. The goal is only to get one reply in a browser. You do not need to understand nanobot's architecture or edit its config by hand.
Download Python from [python.org](https://www.python.org/downloads/) if you do not already have version 3.11 or newer. On Windows, enable **Add python.exe to PATH** if the installer shows that option.
The result should start with `Python 3.11` or a newer number. If the command is not found, close and reopen the terminal. You can also try `python3 --version` on macOS/Linux or `py --version` on Windows.
The provider, credential, endpoint, and model must belong together. For example, an API key from one provider usually cannot call a model name copied from a different provider.
The installer downloads the stable nanobot package into an isolated Python environment. On a fresh local desktop, it then starts the WebUI and opens your browser. This can take a few minutes on the first run. Keep the terminal open. It prints the exact command used to run nanobot; if `nanobot` is not found later, reuse that whole command instead of switching to a different Python command.
If your organization blocks downloaded install scripts, use the [alternative install methods](./quick-start.md#other-install-methods) or ask your administrator to review the scripts first.
If the terminal cannot find `nanobot`, take the exact command printed by the installer and replace its final arguments with `webui`. That command may begin with `uv tool run`, `pipx run`, or the full path to nanobot's private Python environment.
On SSH, a computer without a desktop, an existing configuration, or an older nanobot release, the installer may open the terminal wizard instead. Choose **Quick Start** there and follow its prompts.
Do not configure every feature immediately. Choose one next goal:
| Goal | What to do |
|---|---|
| Change the AI model | Open **Settings → Models** |
| Add a provider credential | Open **Settings → Models**, then find the provider |
| Connect Telegram, Discord, Slack, Feishu, WeChat, or another chat app | Open **Settings → Channels**, choose the platform, and follow its connection steps |
| Add a tool integration | Open **Apps** and choose an App or MCP integration |
| Schedule a reminder or recurring task | Ask nanobot in the target chat, then manage it in **Automations** |
| Work with project files | Start a new chat, choose the project workspace, and review the access setting before sending the task |
Repository docs show the current development version. If your stable package does not yet show **Settings → Channels**, use the [Chat Apps guide](./chat-apps.md) or update to a release that includes it.
Some runtime changes ask you to restart nanobot. Use the restart action shown by the WebUI, or return to the terminal, press `Ctrl+C`, and run `nanobot webui` again.
For a chat platform's account, bot, token, or permission prerequisites, use the [Chat Apps guide](./chat-apps.md). For local models and provider-specific recipes, use the [Provider Cookbook](./provider-cookbook.md).
| `nanobot: command not found` | Reuse the exact nanobot command printed by the installer; it points to the isolated environment that contains the package |
| `401`, unauthorized, or invalid API key | The key is wrong, expired, or belongs to a different provider |
| Model not found | The model ID is misspelled or unavailable to your provider account |
| Browser does not open | Open `http://127.0.0.1:8765` yourself and keep the terminal running |
| Browser opens but messages fail | Test `nanobot agent -m "Hello!"` to separate a model problem from a WebUI problem |
| A change was saved but nothing changed | Restart nanobot so the running process reloads the config |
If you ask for help, include your operating system, `nanobot --version`, `nanobot status`, the exact command, and the exact error. Remove every API key, bot token, password, OAuth token, and private account ID first.
Leave that terminal open while you use nanobot. To stop it, return to the terminal and press `Ctrl+C`. Use `nanobot webui --background` only after the normal foreground start and model setup work; then manage it with `nanobot gateway status`, `logs`, `restart`, and `stop`.