aiopnsense 1.0.1

Async Python client library for OPNsense

aiopnsense

aiopnsense is an async Python client library for OPNsense.

Requires OPNsense Firmware 26.1.1+

What this library does

aiopnsense wraps supported OPNsense REST endpoints behind a single async client, OPNsenseClient. It is designed for applications that need to query router state or trigger supported OPNsense actions without manually building HTTP requests.

The client currently includes helpers for:

• system information, notices, certificates, CARP, Wake-on-LAN, reboot, and interface reloads
• firmware version checks, update status, and upgrade actions
• interface, gateway, CPU, memory, filesystem, and temperature telemetry
• DHCP lease and ARP table access
• firewall rules, NAT rules, alias toggling, and state killing
• service status lookup and service start/stop/restart operations
• Unbound blocklist management
• OpenVPN and WireGuard status plus VPN instance toggling
• vnStat metrics, captive portal vouchers, and speed test data

Installation

python -m venv .venv
source .venv/bin/activate
pip install aiopnsense

OPNsense documentation

• OPNsense API reference: https://docs.opnsense.org/development/api.html
• OPNsense API usage guide: https://docs.opnsense.org/development/how-tos/api.html
• Creating and maintaining API keys: https://docs.opnsense.org/manual/how-tos/user-local.html#creating-and-maintaining-api-keys

In practice, use the generated OPNsense API key as the username and the generated secret as the password when constructing OPNsenseClient.

Simple usage

The client expects an existing aiohttp.ClientSession. Most applications create one session for the lifetime of the integration or service and reuse it for all requests.

Read system state and telemetry

import asyncio
import aiohttp
from aiopnsense import OPNsenseClient

async def main() -> None:
    async with aiohttp.ClientSession() as session:
        client = OPNsenseClient(
            url="https://opnsense.example.com",
            username="YOUR_API_KEY",
            password="YOUR_API_SECRET",
            session=session,
        )

        try:
            system_info = await client.get_system_info()
            telemetry = await client.get_telemetry()

            print(f"Firewall name: {system_info.get('name')}")
            print(f"CPU telemetry: {telemetry.get('cpu')}")
            print(f"Filesystem telemetry: {telemetry.get('filesystems')}")
        finally:
            await client.async_close()


asyncio.run(main())

Check firmware or control a service

import asyncio
import aiohttp
from aiopnsense import OPNsenseClient

async def main() -> None:
    async with aiohttp.ClientSession() as session:
        client = OPNsenseClient(
            url="https://opnsense.example.com",
            username="YOUR_API_KEY",
            password="YOUR_API_SECRET",
            session=session,
            opts={"verify_ssl": True},
        )

        try:
            firmware = await client.get_firmware_update_info()
            services = await client.get_services()

            print(f"Current firmware: {firmware.get('product', {}).get('product_version')}")
            print(f"Available services: {[service.get('name') for service in services[:5]]}")

            restarted = await client.restart_service_if_running("unbound")
            print(f"Restarted unbound: {restarted}")
        finally:
            await client.async_close()

asyncio.run(main())

If the OPNsense router uses a private CA or self-signed certificate, pass opts={"verify_ssl": False}.

Development

Install the package in editable mode with test dependencies and run:

python -m venv .venv
source .venv/bin/activate
python -m pip install --upgrade pip
pip install --group dev -e .
pytest
prek run --all-files

Origin and Purpose

aiopnsense was initially extracted from the hass-opnsense integration. It is primarily for use as an external dependency by Home Assistant for its OPNsense Integration.