### Prerequisites
#### Rust toolchain (stable)
**macOS / Linux**
1. Visit [rustup.rs](https://rustup.rs/).
2. Copy the install command shown on that page.
3. Run it in Terminal and follow the prompts.
4. Open a new terminal window after installation.
5. Verify the installation with `rustc --version`.
**Windows**
1. Visit [rustup.rs](https://rustup.rs/).
2. Download the Windows installer shown there.
3. Run it and follow the prompts.
4. Open a new PowerShell or Command Prompt window after installation.
5. Verify the installation with `rustc --version`.
Rust installed via `rustup` uses the stable toolchain by default, which is what OpenSymphony expects.
---
#### Python 3.12+ with `uv` for the OpenHands server
**Recommended path on macOS, Windows, and Linux**
1. Visit the [uv installation docs](https://docs.astral.sh/uv/getting-started/installation/).
2. Follow the instructions there to install `uv` for your platform.
3. Install Python 3.12 with `uv python install 3.12`.
4. Verify `uv` with `uv --version`.
5. Verify Python with `python3.12 --version`, or the equivalent command on your platform.
**Alternative**
If you already have Python 3.12 or newer installed, you can keep it and just install `uv`. If you need a manual Python installer, use the official [Python downloads page](https://www.python.org/downloads/).
## Current model
- COE-275 contributed: PR #1: COE-257: tighten hosted deployment guidance
## Important invariants
- Preserve the behavior described in the recent captured changes unless current code and tests show it has changed.
- Use capsule source refs to inspect the original PR or Linear issue when context is ambiguous.
## Operational flow
```mermaid
flowchart TD
memory["Captured issue memory"] --> area["Prerequisites"]
area --> docs["docs/prerequisites.md"]
```
## Known gotchas
- No area-specific gotchas were inferred from the selected memory.
## Recent changes
- COE-275: Remote agent-server mode and auth hardening
## Source refs
- COE-275