# Introduction
URL: /en-US/docs

An open-source AI agent with multi-provider access.



## Model providers [#model-providers]

Spirit Agent does not provide model services directly. You can connect OpenAI, Anthropic, SpaceXAI, a gateway, or a regional provider. Every provider runs on the same harness: tools, approvals, sessions, and workspace behavior stay consistent.

Keys are written to the system keyring under the `SpiritAgent` service. They are not stored in `config.json`.

## One agent, two hosts [#one-agent-two-hosts]

Desktop and the CLI share a local daemon. Sessions, models, approvals, and credentials live in the same data directory, so you can start a task in the app and continue it in the terminal.

## Start here [#start-here]

1. [Install Desktop or the CLI](./quickstart.mdx)
2. Open a workspace
3. Connect one provider
4. Ask the agent to read the repo, make a small edit, and approve the change

See the [quickstart](./quickstart.mdx) for the full path.

* Install: [Desktop](./install/desktop.mdx), [CLI](./install/cli.mdx)
* Connect: [Providers](./providers.mdx)
* Work: [Modes](./agent/modes.mdx), [Tools](./agent/tools.mdx), [Customize](./customize/rules.mdx)
* Hosts: [Desktop](./desktop.mdx), [CLI](./cli.mdx) — [ACP](./acp.mdx) is implemented but not on the download page
* Reference: [Config](./config.mdx), [Security](./security.mdx), [Appearance](./appearance.mdx), [Troubleshooting](./troubleshooting.mdx)