CLI & Protocol

CLI & Protocol

TcNo-Acc-Switcher.exe handles the GUI, swaps, list commands, tray startup, and tcno:// links. There is no separate CLI binary.

TcNo-Acc-Switcher.exe --help

Quick reference

Action	Example
Steam swap	TcNo-Acc-Switcher.exe +s:76561197960287930
Steam swap with persona	TcNo-Acc-Switcher.exe +s:76561197960287930:3
Templated platform swap	TcNo-Acc-Switcher.exe +b:email@example.com
Open platform page	TcNo-Acc-Switcher.exe Steam or --page=Steam
Add new / logout flow	TcNo-Acc-Switcher.exe logout:Steam
List platforms	TcNo-Acc-Switcher.exe --list-platforms
List accounts	TcNo-Acc-Switcher.exe --list-accounts=Steam
JSON list output	Add --json to a list command
Start hidden in tray	TcNo-Acc-Switcher.exe -tray
Debug logs	-v or --log-level=debug

Platform short names come from the first entry in each "Identifiers" array in Platforms.json.

Swap syntax

+<platformShort>:<uniqueId>[:optionalArg]

• Steam uses +s:<steamId64>[:personaState].
• Other platforms use +<platformShort>:<uniqueId>.
• Unknown arguments after the swap token are passed to the target platform executable.

Steam persona state is an integer. Example:

TcNo-Acc-Switcher.exe +s:76561197960287930:3

Shortcut and game launch flags

Flag	Use
--run-appid=<id>	After a Steam swap, launch steam://rungameid/<id>
--run-shortcut=<value>	After a swap, launch a .lnk or .url found in shortcut folders

--run-appid only works with +s:<steamId64>. --run-shortcut works with Steam and templated platform swaps. The shortcut value is URL-decoded, reduced to a basename, then searched in cache, Desktop, and Start Menu locations.

Example:

"C:\Program Files\TcNo Account Switcher\TcNo-Acc-Switcher.exe" +s:76561197960287930 --run-appid=730

The UI can create shortcuts from the account right-click menu.

Logout / Add New

These run the same flow as Add New in the GUI:

TcNo-Acc-Switcher.exe logout
TcNo-Acc-Switcher.exe logout:Discord
TcNo-Acc-Switcher.exe logout:Steam

logout:<platform>:<accountId> is parsed for protocol compatibility. The current logout flow clears the platform's current login state, not one saved account.

Open a page

TcNo-Acc-Switcher.exe Steam
TcNo-Acc-Switcher.exe --page="Epic Games"
TcNo-Acc-Switcher.exe --open-page=Steam

This is also used when the app restarts as administrator and needs to return to the same platform page.

List commands

TcNo-Acc-Switcher.exe --list-platforms
TcNo-Acc-Switcher.exe --list-accounts
TcNo-Acc-Switcher.exe --list-accounts=Steam --json

--json is valid only with --list-platforms or --list-accounts.

Protocol handler

Enable it in Settings -> System -> Protocol handler.

Protocol payloads mirror CLI swap tokens:

tcno://s:76561197960287930
tcno://s:76561197960287930:3
tcno://d:123456789012345678

Use links from Win+R, browsers, scripts, or other launchers.

Platform identifiers

Platform	Identifiers
Escape from Tarkov	eft, bsg, tarkov
OBS Studio	obs
Epic Games	e, epg, epic, epicgames
GOG Galaxy	g, gog, gog2
Discord	d, discord
Discord Canary	dc, discordcanary, canary
Discord PTB	dp, discordptb, ptb
Riot Games	r, riot, riotgames
Origin	o, origin
EA Desktop	ea, eadesktop
GeForce Now	gn, geforce, geforcenow
Ubisoft	u, ubi, uplay, ubisoft
Meta Horizon Link	mhl, metahorizon, metalink
Oculus	oc, oculus
Magic Arena	mtga, magicarena
PS Remote Play	psr, psrp, psremote
Albion Online	ao, albion, albiononline
Roblox	rb, roblox, rblx
Rockstar	rs, rockstar, socialclub
Battle.net	b, bnet, battlenet, blizzard
Arena Breakout: Infinite	abi, arenabreakout
Delta Force	dfho, deltaforce, hawkops
Jagex	jagex, osrs, runescape
Steam	s, steam, valve

Check Platforms.json for the current list.

Environment variables

These are read once, at startup. They exist for cases where a command-line flag is awkward or does not exist — most usefully wails3 dev, which runs the app through a task and cannot forward arguments to it.

Variable	Effect
TCNO_ALLOW_STEAMGUARD_CAPTURE	Lets Steam Guard windows be screenshotted and recorded. Same as --allow-steamguard-capture.
TCNO_STEAMGUARD_CONFIRMATION_DUMP	Writes the full payload of each confirmation you open to {UserData}\SteamGuard\diagnostics\. No flag equivalent.

A variable counts as set when it holds anything other than an empty string, 0, or false (any case). 1 is the conventional value:

$env:TCNO_ALLOW_STEAMGUARD_CAPTURE=1; .\TcNo-Acc-Switcher.exe

set TCNO_ALLOW_STEAMGUARD_CAPTURE=1 && TcNo-Acc-Switcher.exe

Both switches are process-wide and decided before any window exists, so nothing in the app can turn them on or off later, and neither is a setting in the UI.

TCNO_ALLOW_STEAMGUARD_CAPTURE

Steam Guard windows are hidden from screen capture, which also blocks deliberate capture — so screenshots and screen recordings of the feature itself come out blank. Setting this lifts the exclusion for that run, and the log records that the protection is off. It covers the confirmations window and the main window while it is showing a code or another sensitive view.

It does not touch Settings -> Privacy -> Always hide this app from screenshots, which is a separate, user-controlled setting covering the ordinary windows.

TCNO_STEAMGUARD_CONFIRMATION_DUMP

Off unless you set it, because the payloads describe live trades: item names, counterparties and the summary Steam rendered. Each confirmation you open writes one timestamped .json file, 0600, under {UserData}\SteamGuard\diagnostics\. The confirmation's id and nonce are deliberately left out — together they are the decision keys, and anyone holding them alongside a session could accept the trade.

Set it when reporting a confirmation that renders wrongly, and read the file before attaching it anywhere.

Development and test variables are listed in Building from source.

User-data move

When the app moves user data from Settings, it may restart with:

--userdata-move-from=<old> --userdata-move-to=<new>

This is normally automatic. The flags are documented for troubleshooting.