aiohortos

Async Python client for the Ridder HortOS Automation API, the cloud API behind HortiMaX greenhouse process controllers.

This is a community-built library. It is not an official Ridder product, it is not certified by Ridder, and Ridder does not support it. Ridder's support covers the HortOS Automation API itself; anything about this library belongs on its issue tracker.

The API is still evolving and Ridder does not guarantee backward compatibility for community integrations, so a future API change can alter or remove what this library returns. Pin a version.

The library is read-only: it authenticates with an API key and reads controllers, their health, and their readouts. It never writes setpoints.

pip install aiohortos

Usage

import asyncio

from aiohortos import HortosClient


async def main() -> None:
    async with HortosClient("your-api-key") as client:
        for device in await client.get_devices():
            print(device.name, device.label)
            for readout in await client.get_latest_readouts(device.name):
                print(
                    f"  {readout.source.display_name}: "
                    f"{readout.identifier} = {readout.value} {readout.unit or ''}"
                )


asyncio.run(main())

Pass an existing session to share a connection pool — which is what you want inside an application that already has one:

async with aiohttp.ClientSession() as session:
    client = HortosClient("your-api-key", session=session)

The client also accepts a base_url, for on-premise HortOS installations that serve the same API from your own network.

API surface

Errors all derive from HortosError:

• HortosAuthenticationError — the API key or token was rejected (HTTP 401/403)
• HortosConnectionError — the API could not be reached, or timed out
• HortosResponseError — an unexpected status or payload, with .status

Notes on the API

• Tokens live 15 minutes and are renewed with a refresh token valid 7 days. The client handles both, and re-authenticates when a token is rejected.

• The API allows 100 requests per 15 seconds per key. The library does not throttle; pace your own polling.

• Unchanged readouts are refreshed at most every 5 minutes, so polling faster than that gains nothing.

• Readout identifiers follow <CamelCaseSubject>-<Kind>, e.g. VentPositionLeewardSide-Measured. One upstream typo exists in the wild: IrrigationVolume-Measuered.

• Some readouts have unitIdentifier: "Scalar" and a numeric value that is really an enumeration member id from a table the API does not expose. They are returned as-is. CardinalWindDirection is the one decoded so far:

  from aiohortos import decode_cardinal_wind_direction
  
  decode_cardinal_wind_direction(8783)  # 247.5, i.e. WSW
  decode_cardinal_wind_direction(1234)  # None — not a member of the table
  

  The 16 compass points occupy contiguous ids 8772–8787 on a HortiMaX controller, clockwise in 22.5° steps, confirmed over a day of history and cross-checked against the official app. Anything outside that block, or not a whole number, decodes to None rather than to a plausible bearing.

• Readout.name embeds the source's user-defined name and is a poor label on its own — build names from identifier and source instead.

Ridder's Swagger UI documents the API at https://hortos.ridder.com/api/process-control/index.html. The OpenAPI document lives at {base_url}/v1/swagger.json and needs a bearer token.

Development

uv venv && uv pip install -e . --group dev
pytest
ruff check . && ruff format --check . && mypy src

Disclaimer

This library is not affiliated with, endorsed by, or certified by Ridder, and carries no warranty. "Ridder", "HortOS" and "HortiMaX" are used only to name the API and the products this library talks to; they are trademarks of their respective owner.