yamactl 0.3.0

Offline LAN CLI for Yamaha RX-V475 AV receiver

yamaha-py

yamaha-py talks directly to your Yamaha AV receiver over the local network — no cloud, no Yamaha account, no internet required.

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Features

• Pure local control — two protocols: YNCA over TCP (port 50000) and HTTP XML (Yamaha Remote Control API)
• Rich CLI — human-readable output or --json for scripting and pipes
• Multi-profile config — manage multiple receivers, each with host, protocol, zone, timeout, and retries
• Zone support — control main and zone2 independently
• Net Radio — stream URLs via UPnP; manage presets per profile
• Tuner — FM/AM band, frequency, RDS, presets
• Receiver discovery — parallel /24 subnet scan with optional profile save
• Stable exit codes — every error maps to a predictable shell exit code

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Installation

pip install yamactl
# or with uv
uv add yamactl

Requires Python 3.14+.

[!NOTE] For mDNS discovery, install the optional dependency:

pip install "yamactl[discovery]"

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Quick start

1. Create a profile

yamactl config init --name livingroom --host 192.168.178.42 --protocol ynca

2. Check the receiver

yamactl status

┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┓
┃ Receiver Status                ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┩
│ Host       192.168.178.42      │
│ Model      RX-V475             │
│ Power      on                  │
│ Input      HDMI1               │
│ Volume     -45.0 dB            │
│ Mute       off                 │
│ DSP        5ch Stereo          │
└────────────────────────────────┘

3. Control it

yamactl power on
yamactl volume set -- -40
yamactl volume up --steps 4
yamactl input set HDMI2
yamactl mute toggle
yamactl scene load 1

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Python SDK

YamaCtlClient is the public API — use it to integrate receiver control into your own scripts or applications.

from yamactl.client import YamaCtlClient

# Uses the default profile from ~/.config/yamaha-local/config.yaml
with YamaCtlClient.from_profile() as client:
    # Read status
    status = client.get_status()
    print(status.power, status.input, status.volume_db)

    # Power & volume
    client.set_power("on")
    client.set_volume(-35.0)
    client.volume_up(steps=2)      # +1.0 dB

    # Mute
    client.set_mute(False)
    new_state = client.toggle_mute()

    # Input & DSP
    client.set_input("HDMI1")
    client.set_dsp_mode("5ch Stereo")
    client.load_scene(1)

    # Tuner
    client.set_tuner_band("FM")
    client.set_tuner_fm_freq(89.5)

    # Net Radio
    client.play_netradio_url(
        "http://wdr-wdr3-live.icecastssl.wdr.de/wdr/wdr3/live/128/stream.mp3",
        title="WDR3",
    )

Use a named profile or override the zone:

with YamaCtlClient.from_profile(profile="bedroom", zone_override="zone2") as client:
    client.set_volume(-40.0)

All methods raise subclasses of YamaCtlError on failure (see Exit codes for the mapping).

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CLI reference

yamactl [--profile NAME] [--zone main|zone2] [--json]

Status & discovery

Command	Description
yamactl status	Full receiver status
yamactl discover --subnet 192.168.178.0/24	Scan subnet for Yamaha receivers

Power

Command	Description
yamactl power on	Power on
yamactl power standby	Standby
yamactl power toggle	Toggle power state

Volume

Command	Description
yamactl volume get	Get current volume in dB
yamactl volume set <dB>	Set absolute volume (use -- -48 for negative)
yamactl volume up [--steps N]	Increase by N × 0.5 dB
yamactl volume down [--steps N]	Decrease by N × 0.5 dB

Mute

Command	Description
yamactl mute on	Enable mute
yamactl mute off	Disable mute
yamactl mute toggle	Toggle mute state

Input & sound

Command	Description
yamactl input set <source>	Switch input (HDMI1, AV1, NET RADIO, …)
yamactl input list	List available inputs
yamactl sound dsp <mode>	Set DSP / surround mode
yamactl sound straight on|off	Straight mode
yamactl sound sleep <minutes>	Sleep timer (or off)

Tuner

Command	Description
yamactl tuner status	Band, frequency, RDS
yamactl tuner band fm|am	Switch band
yamactl tuner fm <MHz>	Set FM frequency in MHz (e.g. 87.50)
yamactl tuner am <kHz>	Set AM frequency in kHz (e.g. 810)
yamactl tuner preset <N>	Load preset

Net Radio

Command	Description
yamactl netradio status	Now-playing info
yamactl netradio play <name>	Play a saved URL preset
yamactl netradio stop	Stop playback
yamactl netradio url add <name> <url>	Save a streaming URL preset
yamactl netradio url list	List saved URL presets
yamactl netradio url remove <name>	Remove a URL preset

Config management

Command	Description
yamactl config init --name NAME --host IP	Create or update a profile
yamactl config show	Show all profiles
yamactl config set-default --name NAME	Change default profile

Diagnostics

Command	Description
yamactl raw ynca "@MAIN:VOL=?"	Send raw YNCA command
yamactl raw xml "<YAMAHA_AV ...>"	Send raw HTTP XML envelope

Use --json for machine-readable output on any read command. All log output goes to stderr; stdout stays scriptable.

Exit codes

Code	Error
0	success
2	config / usage error
10	receiver unreachable
11	receiver busy (YNCA port in use)
12	command timeout
20	invalid input source
21	operation unsupported by protocol
30	unexpected receiver response

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MCP Server

yamaha-py ships a Model Context Protocol server that exposes all receiver controls as MCP tools, usable from any MCP-compatible AI client (Claude Desktop, Cursor, VS Code Copilot, etc.).

yamactl-mcp   # stdio transport — wire this up as an MCP server

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "yamactl": {
      "command": "yamactl-mcp"
    }
  }
}

VS Code Copilot (.vscode/mcp.json)

{
  "servers": {
    "yamactl": {
      "command": "uv",
      "args": ["run", "yamactl-mcp"]
    }
  }
}

Available MCP tools

Tool	Description
get_receiver_status	Full status (power, input, volume, mute, DSP)
set_power	Power on / standby
get_volume / set_volume	Read or set volume in dB
volume_up / volume_down	Step volume up or down (0.5 dB/step)
get_mute / set_mute / toggle_mute	Mute control
list_inputs / set_input	Input source selection
load_scene	Load a Yamaha scene preset (1–4)
get_tuner_status	Tuner band, frequency, preset, RDS
set_tuner_band / set_tuner_fm_freq / set_tuner_am_freq / set_tuner_preset	Tuner control
get_netradio_status	Now-playing info
play_netradio_url / pause_netradio / stop_netradio	Net radio / streaming playback

The server uses the default configured profile (~/.config/yamaha-local/config.yaml).

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Protocols

yamaha-py supports two protocol adapters, selectable per profile:

Protocol	--protocol	Port	Notes
YNCA (default)	ynca	50000 (TCP)	Full bidirectional control via the ynca library
HTTP XML	http_xml	80 (HTTP)	Yamaha Remote Control API; no extra dependency

[!TIP] YNCA gives richer status feedback and is the recommended choice. Use http_xml if YNCA port 50000 is blocked on your network.

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Configuration

Config file: ~/.config/yamaha-local/config.yaml

default_profile: livingroom
profiles:
  livingroom:
    host: 192.168.178.42
    protocol: ynca
    zone: main
    timeout_seconds: 3.0
    retries: 1
    netradio_presets:
      wdr3: "http://wdr-wdr3-live.icecastssl.wdr.de/wdr/wdr3/live/128/stream.mp3"
      swr2: "http://swr-swr2-live.icecast.t-systems.de/swr/swr2/live/128/stream.mp3"

Precedence: --profile flag > default_profile > first profile in file.

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Development

git clone https://github.com/jenreh/yamaha-py
cd yamaha-py
uv sync
task test    # pytest with coverage
task lint    # ruff
task format  # ruff format

[!NOTE] Real-device integration tests require a reachable receiver. Set YAMACTL_TEST_HOST=<IP> and run pytest -m rxv475.