Download small complete Vary programs as source zips. The first package is the `examples/echo` Via app.

> **Download:** [Download echo.zip](/downloads/echo.zip)
>
> Echo API example source zip.

## Echo API example

`echo.zip` contains a complete Vary API app with source, tests, project metadata, and a Via app manifest.

Source path: `examples/echo`.

To check the download:

```bash
printf '%s  %s\n' \
  '6af0c6c1d675f36a29324ea6b31c251d6ab5ec45ade6d20cc9be177704e8d93c' \
  'echo.zip' | sha256sum -c -
```

After downloading:

```bash
unzip echo.zip
cd examples/echo
vary test tests/test_echo.vary
```

To deploy it on Via, use the app manifest in the archive:

```bash
vary app preflight echo --workdir . --apply-manifest --fix --approve
vary app deploy echo --workdir . --apply-manifest
vary app smoke echo
```