steam_commands

-accesscode - 
-batterytestmode - rapidly cycle battery percentages for testing
-bigpicture - Start in Steam Big Picture mode
-browser-offline - 
-cafeapplaunch - Launch apps in a cyber cafe context
-candidates - Show libjingle candidates for local connection as they are processed
-ccsyntax - Spew details about the localized strings we load
-cef-allow-browser-underlay - Allow webhelper to create BrowserView underlays
-cef-delaypageload - Enable early-out for known page loads
-cef-disable-breakpad - disables breakpad in crash dumps
-cef-disable-d3d11 - disable D3D11 usage in CEF
-cef-disable-d3d11-video-decoder - Disable the Windows D3D11VideoDecoder
-cef-disable-delaypageload - Disable early-out for known page loads
-cef-disable-gpu - Disable GPU usage in CEF (force software rendering/compositing)
-cef-disable-gpu-compositing - Disable GPU accelerated compositing in browsers
-cef-disable-gpu-sandbox - disables CEF gpu-process sandbox
-cef-disable-hang-timeouts - disables GPU and renderer hang timeouts
-cef-disable-js-logging - disables console and log file logging of JS console events
-cef-disable-occlusion - disables Chromium window occlusion testing
-cef-disable-renderer-restart - Disable auto-restart of renderer process for existing browsers
-cef-disable-safe-shutdown-workaround - Force the usage of the safe browser shutdown workaround for Linux+NV
-cef-disable-sandbox - disables sandboxing in CEF
-cef-disable-seccomp-sandbox - disables CEF seccomp-bpf sandbox on Linux
-cef-disable-site-isolation - disables per-process site-isolation
-cef-disable-touch-focus-workaround - Disable touch input browser focus workaround
-cef-disable-xcomposite-workaround - Disable the glcomposer workaround applied to some video drivers
-cef-enable-debugging - enables Chromium remote debugging, defaulting to localhost:8080
-cef-enable-fatal-dcheck - 
-cef-enable-gpu-debugging - Enable GPU debugging in Chromium, costs a glGetError() call after every command
-cef-force-32bit - forces usage of 32-bit steamwebhelper when available
-cef-force-accessibility - Force enable CEF accessibility features
-cef-force-browser-underlay - Force support for BrowserView underlays
-cef-force-gpu - Force enable GPU acceleration
-cef-force-gpu-blocklist - Force enable GPU blocklist
-cef-force-hw-video-decode - Force enable HW accelerated video decoding
-cef-force-occlusion - force enable Chromium window occlusion testing
-cef-force-opaque-backgrounds - Force the usage of opaque backgrounds for CEF
-cef-force-sandbox - force sandboxing in CEF
-cef-full-memory-crash-report - enables full crash dumps
-cef-in-process-gpu - runs CEF GPU processing as thread of browser process
-cef-log-sandbox - Enable sandbox logging in CEF
-cef-no-restart-on-ui-mode-change - Don't restart the renderer on UI mode changes
-cef-single-process - runs CEF processes in single process
-cef-use-execv - Launch CEF process via execv
-cef-use-shell-exec - Launch CEF process via sub-shell
-cef-verbose-js-logging - enables verbose logging of JS console events
-cef-verbose-logging - enables verbose logging from CEF
-cef-winxp - force running the WinXP compatible CEF browser
-clientui - 
-compat-disable-filtering - Disable filtering of normally unlisted runtimes.
-complete_install_via_http - Run installation completion over HTTP by default
-console - 
-controllertypeoverride - 
-debug_steamapi - enables logging of Steam API functions
-dev - 
-devsites - Use local dev websites
-devsiteshost - Pass the hostname, will generate dev site domains like store.{hostname}.steam.dev
-disable-overlay-gpu-pri - Disables setting webhelper GPU pri high when overlay visible
-disable-overlay-wait-for-cef-frame - Disables waiting for pending CEF frame render when overlay visible.
-disable-winh264 - disables loading winh264.dll
-disablehighdpi - disables high-DPI support in CEF
-disablepartnerlicenses - disable automatically granted partner licenses
-dumpvideostream - Dump the game stream as an elementary video file
-enable-desktop-gl-fallback - 
-enable-keyring - enables CEF usage of the Chromium keyring
-fasthtml - Enable fast child html for any platform
-flushconfig - 
-forcecontrollerappid - Force a Specific AppID for Steam Controller Config - Prevents context/app switching from changing configuration
-forcedeckcontroller - 
-forcedesktopscaling - Scale the desktop UI
-forceservice - Run Steam Client Service even if Steam has admin rights
-friendsui - 
-fs_log - Log file system accesses
-fs_logbins - Log the binaries we load during operation
-fs_target - Set target syntax
-fulldesktopres - Run tenfoot in full desktop resolution rather than 1080p, overrides -720p as well.
-fullscreen - Set BPM to fullscreen
-fullscreenopengl - Use the full screen OpenGL render for the UI
-gamepadui - Start in gamepadui mode
-html-perf-monitor - Draws html perf data
-init_universe - 
-language - Set Steam client UI language
-log_voice - writes voice chat data to the logs/voice_log.txt file
-login - Automatically logs in user
-lognetapi - logs all P2P networking info to log/netapi_log.txt
-ltp - use legacy token persistence scheme
-master_ipc_name_override - 
-musicdbforcerebuild - Forces a rebuild and recrawl of the music database
-net_fake_state - Set initial value for net_fake_state
-net_start_wifi_disabled - Set the initial value for wifi enabled to false.  (Useful when emulating SteamDeck)
-no-cef-sandbox - disables sandboxing in CEF
-no-dwrite - forces CEF to use GDI text even if DWrite support is available
-no-shared-textures - forces overlay to avoid sharing texture handles with game process
-nobigpicture - Start in regular mode (force Big Picture mode off)
-noconsole - 
-nocrashmonitor - 
-nofasthtml - Disables new fast child hwnd direct in vgui hwnd rendering path
-nofriendsui - 
-nojoy - Disable controller support
-nopcshutdown - Skip PC power operations
-noshaders - Disable the shader manager
-offlinemode - Always attempt to start in offline mode
-openalldevtools - Open Chrome devtools on launch for every HTML window
-opendevtools - Open Chrome devtools for shared JS context (offscreen window) on launch
-opengl - Use the OpenGL render for the UI
-openoverlaydevtools - Open Chrome devtools on creation of any overlay browsers
-overlaylogging - Enables logging from overlay renderer
-overlaytestmode - Forces overlay testmode mode for debugging
-pid - Pid that we should be watching for
-private_ip_override - 
-quicklogin - Set the base used to construct quick login URLs
-rememberpassword - If logging in user with credentials specified on the command line, proceed as if 'remember my password' had been enabled
-showallbetas - Disable client beta filtering
-silent - Silent startup mode (tray mode only)
-single_core - Force Steam to run on your primary CPU only
-skipstreamingdrivers - Skip streaming driver checks
-steamos - 
-system-composer - Force the use of the system browser composer
-tcp - forces connection to Steam backend to be via TCP - deprecated, will be replaced by websockets only for TCP soon
-tenfoot - Start in Steam Big Picture mode
-testssa - force display of SSA
-teststoragedata - Enable test storage data
-toggle-overlay-html-mode - Disables new faster overlay HTML path (or enables if on a branch it's not on by default for)
-udpforce - forces connection to Steam backend to be via UDP - deprecated, won't exist for too long
-userchooser - Sends the user to the User Chooser even if they have 0 or 1 accounts
-vgui_roundcorners - Enable Win11+ corner rounding
-vguifocus - Print out details of which panel has keyboard focus
-vguimessages - set to see debug vgiui2 messages
-voicerelay - Only allow 'relay' connections for voice (testing).
-vrdisable - Disable VR - never even try to load OpenVR DLLs
-vrforce - Always perform Hmd status check even if we crashed the last time we tried
-vronly - 
-vrskip - Skip VR initialization entirely no matter who asks for it
-vrverbose - Output additional logging for diagnostics
-websocket - forces connection to Steam backend to be via WebSocket
-websocketignorecertissues - says it's ok to ignore cert validation issues if using WebSocket connections, for dev use only
-windowed - Run Steam tenfoot mode in a window rather than a fullscreen borderless window
@AppMRUSize = "20" - 
@bCallerDeadlineAbortJobDisableWhenHTTPReqStart = "1" - 
@bClientDownloadUseHTTPS = "0" - Set this to use HTTPS on supported download servers
@bClientOpenCacheStickyRedirects = "1" - 
@bClientTryRequestManifestWithoutCode = "0" - If set, client will try to get a manifest even without a manifest request code
@bCloudSyncFailDownloadIfGameOutOfDate = "0" - 
@bContentManifestUseProtobufs = "1" - 
@bCSForceNoCache = "0" - 
@bDepotBuilderReadBufferSizeKB = "8192" - 
@bDepotBuilderUnbufferedReads = "1" - 
@bDisableDualStackDownloads = "0" - 
@bDownloadThrottleDuringCloudSync = "0" - 
@bEnableFrameFuncOverageWarnings = "0" - This turns on the spew in SPEW_MISC at level 4, still need to adjust spew levels to see it.
@bEnableHTTP2OnAllCHTTPClients = "0" - Enable HTTP/2 on all CHTTPClients automatically for SSL connections
@bEnableLogTearOff = "1" - 
@bEnableNetworkJobsOwnStartList = "1" - 
@bEnableOfflineLogonTicket = "1" - If true, an offline logon ticket will be requested during logon if none is cached
@bEnableSiteLicenseConnect = "1" - 
@bEnableSiteLicenseConsoleLogging = "0" - 
@bEnableSpewThrottle = "1" - 
@bEnforceValidEmailDomains = "1" - Enable valid email domains in BIsValidEmailAddress
@bForceAbsoluteMouseCoordinates = "0" - 
@bForceLaunchEula = "0" - 
@bForceOverlayAudioRecorder = "0" - force overlay based audio capture (disable MF based audio capture path)
@bForceStreamUnsupportedApp = "0" - 
@bHttpClientRecordHostnameDimension = "0" - Group HTTP metrics by hostname.  Careful, the cardinality of your in-memory map might be large.
@bLANPeerConnectionTimeoutSec = "5" - 
@bLogMessageToProtobufClass = "1" - We we first discover the protobuf class used for a particular EMsg, log it
@bMetricsEnabled = "1" - Enabling allows jobs to collect and report metrics through IMetricsReporters.
@bMsgErrorDump = "0" - 
@bRefreshDownloadSourcesFrequently = "1" - 
@bRequireOfflineLogonTicket = "1" - If true, a valid offline logon ticket is required when logging in in offline or no connection mode
@bScreenshotsLegacyCloudUpload = "0" - If set, use the legacy Steam Cloud upload path for screenshot uploads
@bShaderClientGetBucketManifestUseWebAPI = "1" - 
@bShowUninstalledDemosInLibrary = "1" - 
@bSiteLicenseAllowCachedClientCredentials = "0" - Allow Steam clients that associate to this site to save username and auth credentials locally
@bSiteLicenseProxyCacheIsExternalProcess = "0" - If set, the caching content proxy will be handled by some process other than steamcmd. You probably also should set @sSiteLicenseProxyExplicitIP.
@bSiteLicenseProxyEnableIPv6 = "0" - If set, we will enable ipv6 communications to the Steam servers
@bSiteLicenseServer = "0" - 
@cbPartnerUploadChunkSize = "1000000" - Chunk size to use for POSTing partner uploads
@cCSClientMaxNumSocketsPerHost = "8" - 
@cCSClientMaxNumSocketsPerHostForCachingProxy = "32" - 
@cDepotBuilderFileChunkingThreads = "4" - 
@cloud_testdynamicsyncapp = "0" - 
@cMaxContentServersToRequest = "20" - 
@cMaxInitialDownloadSources = "-1" - 
@cMinimumJobTimeoutsToCheckPerFrame = "100" - 
@cNetEncryptionHandshakeWorkMax_HighPri = "8000" - 
@cNetEncryptionHandshakeWorkMax_LowPri = "2000" - 
@cNetEncryptionHandshakeWorkMax_MedPri = "4000" - 
@csecAudioSignalLevelInterval = "60.0" - Log audio capture signal levels every this many seconds
@csecCSJobSuccessfulRequestTimeWindow = "60" - 
@csecCSRequestProcessorTimeOut = "300" - 
@csecDurationControlPeriod = "" - Override default duration-control / anti-indulgence time period. If nonzero, initial playtime threshold is this value in seconds
@csecDurationControlPeriodToday = "" - Override default duration-control / anti-indulgence time period. If nonzero, per-day playtime threshold is this value in seconds
@csecDurationControlSimulated = "" - Simulate having already played this many seconds of playtime.
@csecDurationControlSimulatedNonRecent = "" - Simulate having already played this many seconds of playtime today, but not recently.
@csecFavoriteGameAccountCacheTime = "86400" - Control how often we refresh the account IDs in the game server favorites list
@csecIncomingDataRatePeriod = "1" - 
@csecSiteLicenseProxyStatsLog = "60" - Log proxy stats this often
@csecSiteLicenseProxyStatsUpdate = "1" - update proxy stats internally this often
@csecUpdateTargetNumConnectionsEpoch = "10" - 
@cSecUploadDownloadRates = "300" - 
@CSInterfaceProxyPassword = "" - 
@CSInterfaceProxyUsername = "" - 
@cUDPSendRetries = "8" - 
@CustomBinaryRequestRetryTimes = "20" - 
@DepotBuilderDeltaMaxChunks = "20000" - 
@DepotBuilderEnableVZd = "1" - 
@DepotBuilderMaxParallelUploadChunks = "96" - 
@DepotBuilderNumHTTPSocketsToMDS = "48" - 
@DepotBuilderParallelUploadChunks = "6" - 
@DepotBuilderProgressTimeout = "1000" - 
@DepotBuilderVZdMinRatio = "0.4" - 
@DepotBuilderXORMatchPercent = "95" - 
@durationControlNightCheck = "1" - Time of day check for duration-control feature. 1 = normal. 2 = force night-time. 0 = disable checks, only enabled for age verified accounts
@EnableUDPHistory = "0" - 
@fDownloadRateImprovementToAddAnotherConnection = "1.2" - 
@fMinDataRateToAttemptTwoConnectionsMbps = "1.5" - 
@ForceContentServer = "" - 
@ForceContentServerHTTPS = "0" - 
@ForceContentServerType = "" - 
@GCNameOverride = "" - 
@LocalContentServer = "" - 
@MatchmakingCreatePingWaitTime = "0" - 
@MatchmakingJoinPingWaitTime = "0" - 
@MatchmakingSearchPingWaitTime = "0" - 
@MatchmakingTotalPingWaitTime = "0" - 
@MaxOutstandingSendThreadItem = "10000" - 
@metricsDisabledCatalogs = "" - Comma separated list of metrics catalogs to disable.  This is the last check.
@metricsDisabledOperations = "" - Comma separated list of metrics operations that are disabled.  This setting has highest priority
@metricsEnabledOperations = "" - Comma separated list of metrics operations.  Overrides disabled catalogs
@nCallerDeadlineHopLatencyMS = "10" - When we send a message expecting a reply from a job with a deadline, set the timeout on the message to [current time remaining in this job] - N ms.  A negative value prevents propagating caller deadlines down the chain
@nClientCloudMaxMBParallelDownloads = "64" - 
@nClientCloudMaxMBParallelUploads = "32" - 
@nClientCloudMaxNumParallelDeletes = "10" - 
@nClientCloudMaxNumParallelDownloads = "10" - 
@nClientCloudMaxNumParallelUploads = "10" - 
@nClientCloudMaxNumUploadsPerBatch = "100" - 
@nClientCMDirectoryResultLoadPercentDither = "10" - Dither to apply to CM server loads received by CMDirectory query
@nClientCMUDPPingTimeGoodEnoughThresholdMS = "50" - 
@nClientCMUDPPingTimeoutUseGoodEnoughMS = "250" - 
@nClientDownloadEnableHTTP2PlatformLinux = "1" - Enable HTTP/2 connections on Linux clients
@nClientDownloadEnableHTTP2PlatformWindows = "1" - Enable HTTP/2 connections on Windows clients
@nClientDownloadEnableHTTP2RelBranch = "1" - Only enable HTTP/2 on enabled platforms on rel branch client if this is set
@nClientDownloadInitWindowSizeHTTP2Connection = "10000000" - Init per-connection window size for HTTP/2.
@nClientDownloadInitWindowSizeHTTP2Stream = "2000000" - Init per-stream window size for HTTP/2.
@nClientEnableHTTP2PlatformLinux = "0" - Enable HTTP/2 connections on Linux clients
@nClientEnableHTTP2PlatformWindows = "0" - Enable HTTP/2 connections on Windows clients
@nClientEnableIPv6ForHTTPPlatformLinux = "0" - Enable IPv6 HTTP connections by default on Linux clients
@nClientEnableIPv6ForHTTPPlatformWindows = "0" - Enable IPv6 HTTP connections by default on Windows clients
@nClientQueryCMDirectoryBeforeConnect = "1" - Use CMDirectory webapi to get fresh CM list on connect - 0=disabled, 1=enabled, 2=main/dev/beta clients only
@nClientServiceMethodForDownloadListPercent = "100" - 
@nContentDeltaChunkAppendChunksAfterProtobufSizeThresholdMB = "33" - 
@nContentUpdateAutoVerifyCleanBytesThresholdMB = "2048" - How many clean MB must we verify before backing off on auto-verifies
@nContentUpdateAutoVerifyEnable = "1" - 0 = disabled; 1 = enabled all clients; 2 = enabled public Beta clients only
@nContentUpdateAutoVerifyPostThresholdOdds = "50" - 1 in X chance we auto-verify this update even if you've reached the clean-data threshold
@nCSClientRateLimitKbps = "0" - 
@nCSJob404ResponseLimit = "100" - 
@nCSJob5xyResponseLimit = "10" - 
@nDownloadLANChunkCacheSizeMB = "128" - 
@nDownloadLANPeerGroup = "0" - 
@net_backlog_bytes_allowed = "18000000" - 
@net_backlog_time_allowed_sec = "8" - 
@net_loopback = "1" - 
@NetConnectionBufferMsgLimit = "1000" - Max # of message that will be buffered into a single zipped packet
@NetConnectionBufferThreaded = "1" - 
@nHTPPServerLogLevelAccessLine200 = "3" - Log level to use for one-line access-log-style for each http server request returning 200
@nHTPPServerLogLevelAccessLineNon200 = "2" - Log level to use for one-line access-log-style for each http server request that returns != 200
@nHTPPServerLogLevelDetails200 = "4" - Log level to use for full details of any http server request returning 200.  This will probably fill up the log if you leave it on.
@nHTPPServerLogLevelDetailsNon200 = "4" - Log level to use for full details of any http server request returning != 200
@nIOCPThreadCount = "1" - 
@nJobInteryieldMillisecondsAlertThreshold = "120" - 
@nJobInteryieldMillisecondsLogThreshold = "80" - 
@nJobInteryieldMillisecondsSpewThreshold = "500" - 
@nJobNetSendsInsaneThreshold = "15000" - 
@nLANPeerGroupRateLimitKbps = "0" - 
@nLANPeerMaxConnections = "24" - 
@nLANPeerRateLimitKbps = "0" - 
@nLegalDictionaryUpdateRateInSeconds = "600" - 
@nNetConnectionBufferZipLevel = "1" - 
@nParentalSettingsLogLevel = "4" - Control the amount of spew written to the parental log file
@nProtobufArenaInitialBlockSize = "65536" - Default initial allocation size for PB arena
@nProtobufArenaMaxBlockSize = "524288" - Max block allocation size for PB arena
@nProtobufArenaNumberOfHeadersToShare = "128" - Number of Jobs to give a single protobuf Arena before we create a new one
@nProtobufArenaNumberOfJobsToShare = "128" - Number of Jobs to give a single protobuf Arena before we create a new one
@nRoamingConfigReconnectCloudSyncWindowSec = "7200" - 
@nScreenshotSaveMaxWidth = "9999" - 
@nServerRefreshRateLimitAdditional = "1" - Limits the burst number of calls per appid to refresh GMS game server lists
@nServerRefreshRateLimitBurst = "100" - Limits the burst number of calls per appid to refresh GMS game server lists
@nServerRefreshRateLimitInterval = "5" - Limits the burst number of calls per appid to refresh GMS game server lists
@nSiteLicenseProxyCacheMaxGB = "100" - If local content cache is enabled, use up to this much disk space
@nSiteLicenseProxyEnableP2P = "0" - If set, will have all connected clients join the same P2P download group
@nSiteLicenseProxyPort = "0" - Local content cache: set > 0 to enable, will listen on this port
@nSpewThrottleNagFrequencyMs = "5000" - 
@nSpewThrottlePeriodMs = "1000" - 
@nSpewThrottleResumeThreshold = "3" - 
@nSpewThrottleTriggerThreshold = "10" - 
@nSpewThrottleUnconditionalResumeMs = "5000" - 
@nSpewThrottleUnconditionalTriggerCount = "50" - 
@nStatsMonitorScale = "1" - 
@nStatsMonitorSecs = "300" - 
@nWatchdogSteamUIPercentReport = "1" - 
@OSJumpListMRUSize = "5" - 
@PeerContentClientMaxJobs = "1" - number of peer sources used at the same time
@PeerContentServerMaxClients = "8" - limit number of peers connected
@PeerContentServerPort = "27040" - If peer content server, will listen on this port for TCP connections from peers
@PeerContentServerRetryDelay = "60" - seconds before retrying peer content server
@RunAdminInstallScriptsFromService = "0" - 
@sBroadcastPreset = "" - 
@sBroadcastTune = "film" - 
@sCSDSVirtualHostHeader = "" - 
@sForceLocalContentCache = "" - 
@sSiteLicenseProxyCacheDirectory = "appcache/slscache" - If local content cache is enabled, use this path for disk cache
@sSiteLicenseProxyExplicitIP = "" - Local content cache: if not blank, will instruct clients to go to this IP for the content cache.
@sSteamCmdForcePlatformBitness = "" - Must be one of: [32 | 64]
@sSteamCmdForcePlatformType = "" - Must be one of: [windows | macos | linux | android]
@strCSNoCacheHeader = "no-cache" - 
@StreamClientArgs = "" - 
@StreamTransportICEPenalty = "0" - Add penalty (ms) to ICE for streaming transport selection
@StreamTransportSDRPenalty = "0" - Add penalty (ms) to SDR for streaming transport selection
@sTrustedLocalContentCacheName = "" - Set this to the machine name where a trusted local Steam download cache is hosted, and we'll use it if available.
@test_bCloudForceSyncConflict = "0" - If @test_nCloudForceSyncFailureAppID is set, then set this so that the failure case is 'file conflict' instead of generic failure
@test_nCloudForceSyncFailureAppID = "0" - Set this to a non-zero App ID to test cloud sync failure. The next sync request will fail.
@uDownloadLANPeerPort = "27038" - If LAN p2p download enabled, will listen on this port for TCP connections from peers. Must be set consistently across all members of the group!
@unMinimumShaderDownloadSizeInUI = "33554432" - 
@uRemoteDiscoveryPortOverride = "0" - If non-zero, will listen on this port for broadcasts instead of k_nBroadcastPort
@uRemoteDiscoveryPortTransmit = "0" - If non-zero, will transmit outgoing broadcasts on this port instead of on the listen port
@WatchdogThreadPercentReport = "10" - 
achievement_clear - Clears an achievement
AlwaysCustomizeOnBadExit = "0" - 
app_backup - <appId> <target folder> [max folder size MB]
app_change_compat_tool - <appid> <name> [config=]
app_delay_update - <appid> <seconds> force delay update
app_dlc_status - app_status <appId> <dlcId>
app_download_enable - <0|1>
app_force_preload = "0" - force this app into preload mode
app_info_find - Find apps with a certain appinfo value set, eg 'common/type media'. * is any. 
app_info_http_min = "0" - 
app_info_http_num_sockets = "8" - 
app_info_print - app_info_print <appid> [section] : print app info for appID
app_info_update - [0|1] : trigger app info update, optionally for update all
app_install - <appId> [volumeindex] 
app_license_request - <AppID> - Requests a free licenses for this app if not already owned.
app_mark_validation - <appId> <0|1:full>
app_move - <appId> <volumeindex>
app_set_config - <AppID> <key> <value> - sets a config value for given app.
app_start_validation - <appId>
app_status - app_status <appId>
app_stop - <appid> [force:0|1] stop this running app
app_uninstall - <appId>
app_update_cancel - <EAppUpdateError>
appcloudsessions = "all" - 
apps_installed - 
apps_per_overview_chunk = "5000" - 
apps_running - displays information about running games tracked by Steam 
async_disconnect - async disconnect
AsyncFileIOAlternateReadWrite = "0" - 
AsyncFileIODisableWrite = "0" - 
AsyncFileIOExpectOutstandingIO = "6" - 
AsyncFileIOForceGenericIO = "0" - 
AsyncFileIOMaxPendingWin32 = "256" - 
AsyncFileIOReadHandleCache = "64" - 
AsyncFileIOWriteHandleCache = "64" - 
batterycharging = "0" - 
batterypercent = "-1" - 
batterytime = "-1" - 
bBroadcastAlwaysUploadThumbnails = "1" - 
bBroadcastUploadGameDataIntervalSeconds = "5" - 
bCheckUGCIntegrity = "1" - 
bClientConvar601DEACE = "1" - 
bClientPingCSesForCellID = "0" - 
bCloudAcceptUnexpectedAutoCloudFileChanges = "0" - 
bDelayGameUpdatesOnBeta = "0" - Should we do scheduling of updates on Steam Beta? If not, they'll all be ASAP
bDepotDeltaPatchUseAPI = "1" - 
bDisableTenFootOverlay = "0" - 
bEnableLoginUsersErrorUpload = "0" - Set to enable uploading log files if there is an error loading login user info
bEnableMHRCAsyncFileReadLog = "0" - 
bEnableSubscribedFileListCache = "1" - 
betaalwaysrebuild = "0" - 
bExternalProcessForVOD = "0" - 
bFinishStagedDepotVersions = "1" - 
bInstallscriptReports = "1" - send reports about broken install scripts
bPrefetchDownloadDetails = "1" - Prefetch download size before actual update happens
broadcast_adjust_bitrate = "200" - 
broadcast_upload_drop_sec = "6" - 
broadcast_upload_update_sec = "3" - 
bShaderAllowReplay = "1" - 
bShaderAllowReplayOnNVIDIA = "1" - 
bShaderAlwaysProcessWhenRunningGame = "0" - 
bShaderCacheDownloads = "1" - Allow to download shader cache depots
bShaderDepotNative = "1" - 
bShaderEnableCacheManagement = "1" - 
bShaderEnableFossilizeLayer = "1" - 
bShaderEnableUpload = "1" - 
bShaderFossilizeFastMerge = "1" - 
bShaderPrecompiledCache = "1" - 
bShaderVerboseLogs = "0" - 
bSingleFileUpdateMode = "1" - 
bSteam3LimitedUserEnable = "1" - 
bSteamLoaderEnable = "1" - 
bSubscribedFilesDecompressOnClient = "1" - 
bSubscribedFilesPollForUpdates = "0" - 
bSubscribedFilesUseRangeRequests = "0" - 
build_installer - <project file> <target folder> [beta key] [beta pwd]
bUseSystemBrowserFor2DVOD = "1" - 
bVerifyAllDownloads = "0" - Verify all files after downloading an update
cAppUpdateWorkingSetMB = "256" - 
cChunkValidationMaxLog = "100" - 
cFileValidationMaxLog = "100" - 
ClientConnectTokenBucketEnable = "1" - 
ClientStatsUploadRateSeconds = "10" - 
clientui_overlay_fps = "60" - 
clientuistats_batchsize = "0" - Control how many events can be queued up for ClientUI stats before the batch is committed. 0 will commit every row.
cloud_file_exists - <appid> <root> <file>
cloud_get_file_info - <appid> <index> [bExternalAPI=1]
cloud_get_num_files - <appid> [bExternalAPI=1]
cloud_sync_app - <appid> Manually triggers background cloud sync of app
cloud_sync_down - <appid> Manually triggers on-launch cloud sync for the given app.
cloud_sync_up - <appid> Manually triggers after-game cloud sync for the given app.
cm_force_change - Change CM List
cMaxDecryptThreadsOverride = "0" - 
compute_file_sha - Compute and print SHA of file on disk
config_refresh - Refresh client configuration
connect_remote - <ip:port>
controller_base_rotation_angle = "0" - 
controller_edge_cutoff = "0" - 
controller_gyro_x_scale = "16000" - 
controller_idle_poll_interval = "50000" - SteamInput Idle Polling interval in microseconds. Default 50,000us = 20hz
controller_min_activation_time = "0.0333" - 
controller_momentum_min_vel = "0" - 
controller_momentum_num_excluded_samples = "1" - 
controller_momentum_num_included_samples = "5" - 
controller_momentum_smooth = "0" - 
controller_newpoll = "1" - 
controller_poll_state = "-1" - 
controller_rate = "2000" - SteamInput Active Polling interval in microseconds. Default 2000us = 500hz
controller_spew_level = "3" - 
countrycode = "" - 
cPreallocateMinimumSizeKB = "256" - 
csecManifestDownloadTimeout = "120" - 
debugLaunchAppDelaySecs = "0" - 
deck_mouse_haptic_tick_dist = "9000" - 
deck_mouse_leftside_filter = "30500" - 
DepotDeltaPatches = "2" - 
DepotDownloadProgressTimeout = "900" - 
DepotMinWriteGapSizeMB = "64" - 
DepotReconstructionBadChunk = "0" - 
DepotReconstructionLowPrio = "1" - 
DepotReconstructionNumIOThreads = "32" - 
DepotUseAlternatingReadWrite = "1" - 
DepotUseSparseFiles = "1" - 
developer = "0" - 
device_authorize_local - <description> : authorize local device for authorized users
device_authorize_status - prints device authorization status
disable_license - 
download_chunk - download_chunk <appid> <depotid> <sha>: download a single chunk from a depot
download_depot - download_depot <appid> <depotid> [<target manifestid>] [<delta manifestid>] [<depot flags filter>] : download a single depot
download_item - download_item <appid> <PublishedFileId> : download a workshop item
download_sources - Dumps list of download sources
dump_box_ips - dump the list of detected local box IP addresses
dump_offline_playtime - Dumps recorded playtime sessions
dump_scheduled_functions - usage: "dump_scheduled_functions" Displays internal Steam function callback timers
enable_license - 
find - find substrings in console commands
g_RumbleRepeatAfterDelaySeconds = "0.050" - 
g_RumbleSustainTimeSeconds = "10" - 
gamestream_debug - Turns verbose debug logging for game streaming on (1) / off (0)
gamestream_fail - Fails the current game stream session
get_download_throttle - 
gr_enum_audio - Enumerate audio sessions
gr_write_json - 
gyro_calibration_duration_automatic = "5.0" - Duration in seconds required to calibrate gyro drift outside of manual calibration. Warning: Short calibration times are more likely to result in false positive anti-drift solutions.
gyro_calibration_duration_manual = "5.0" - Duration in second of manual gyro drift calibration. Longer durations make for more accurate drift corrections.
gyro_calibration_duration_manual_timeout = "30.0" - Duration before manual gyro drift calibration times out, and returns to calibrating the noise tolerance.
gyro_calibration_duration_stationary = "5.0" - Duration in second of gyro noise tolerance calibration.
gyro_debug_sensor_timings = "0" - 
gyro_drift_calibration_debug = "0" - Display which sensor readings (accelerometer or gyroscope) are restarting the drift calibration due to their noise being bigger than noise tolerance.
gyro_drift_correction_enabled = "1" - Turn on/off software gyro anti-drift correction.
gyro_filter_enabled = "1" - Enable (Pseudo) One Euro Filter to internal gyro quaternion. This reduces low level sensor noise and hand shake. 
gyro_filter_max_speed = "16.0" - Above this gyro rotation speed (degrees/second) we apply min (zero) smoothing.
gyro_filter_min_speed = "2" - Below this gyro rotation speed (degrees/second) we apply max smoothing (low pass filter).
gyro_filter_smoothness = "75" - Smoothing amount for low pass filter. 1 is TOO smoothed (barely responding). 100 is barely smoothed.
gyro_force_sensor_rate = "0" - If zero, cull suspected bad sensor data (can result in a loss of natural sensitivity). If not zero, ignore IMU sensor timing and use fixed rate instead. Measured in HZ. Common values: 250hz (PS5), 250hz (PS4), 200hz (Nintendo Switch)
gyro_precision_speed = "0.75" - 
gyro_precision_speed_enabled = "1" - Enable linear response multiplier to speeds below the value set in the "Gyro To..." modes. This applies itself to the remaining speed after the gyro speed deadzone has been applied.
gyro_prediction_correction_speed_max = "180.0" - Above this speed (degrees per second) there is full correction of the predicted quaternion toward the  "ground truth" quaternion. Note this will still be gradual correction, and only in the shared direction of user rotation and the correction required.
gyro_prediction_correction_speed_min = "30.0" - Below this speed (degrees per second) there is no correction of the predicted quaternion toward the  "ground truth" quaternion.
gyro_prediction_enabled = "1" - Enable extrapolation of rotation using the last known gyro speed. This is important to avoid staggered signals over blue tooth, but generally upgrades gyros that run lower than 500hz. The extrapolated quaternion will correct back toward the "ground truth" quaternion when the speed exceeds.
gyro_raw_deadzone = "6.0" - Legacy deadzoning for gyro signal. Only affects "As Mouse" and its derivative modes.
gyro_speed_deadzone = "0.5" - 
gyro_speed_deadzone_enabled = "1" - Enable the minimum speed required to update the gyroscope response.
gyro_stationary_calibration_debug = "0" - Display which sensor readings (accelerometer or gyroscope) are restarting the tolerance calibration due to their noise being too large.
gyro_use_neptune_raw_quaternion = "0" - 
haptic_click_gain_modifier = "0" - 
haptic_intensity = "8000" - 
haptic_intensity_old = "2500" - 
haptic_new = "0" - 
haptic_off_divisor = "5.0f" - 
haptic_tick_gain_modifier = "0" - 
http_cache_clearall - Delete all data from internal HTTP client and CEF browser
http_test - <optional_url> test HTTP connectivity via specified URL
httpclients - Dumps HTTP client stats
installmanagertimeout = "15" - 
jobs - usage: jobs [group_by_attribute] Lists the currently active jobs running in this shell
kv_stats - Render KeyValues stats
library_asset_cache_app_check_interval_sec = "5" - 
library_asset_cache_asset_file_min_sec = "120" - 
library_asset_cache_full_recheck_min_hours = "1" - 
library_asset_cache_max_app_checks_per_frame = "500" - 
library_asset_cache_max_notify = "200" - 
library_asset_cache_max_requests = "20" - 
library_asset_cache_notify_debounce_sec = "60" - 
library_asset_cache_print - Prints library assets info for the given appid
library_asset_cache_recheck - Rechecks the library assets for the given appid
library_asset_cache_version = "3" - 
library_folder_add - <path>
library_folder_list - list all mounted Steam volumes
library_sharing_account_max = "5" - 
licenses_for_app - <appid> : shows active licenses for appid
licenses_print - display users's Steam3 licenses
log_callbacks - usage: "log_callbacks <first callbackID> [last callbackID]
log_files_always_flush = "0" - 
log_ipc - usage: "log_ipc [counts|verbose|#maxcount] <filter>" Enables IPC logging. Specifying "counts" or "verbose" is optional, defaulting to counts.
log_matchmaking_callbacks = "0" - 
manifest_dump - <filename> [0|1: include chunks]
mem_stats - Dump memory stats
mem_validate - <dump|leaks> <threshold> : validates memory
mem_walk - [full] : validates memory
MergeCapReprocess_minutes = "480" - 
mic_autogain = "16000" - automatic gain control level for microphone input
mic_inputfile = "" - causes voice data to be read from the specified file instead of from the microphone
mic_outputfile = "" - causes microphone data to be written out to the specified file
minidump_assert - generates an assert
minidump_crash - crashes the Steam client
nBroadcastSessionMaxDropFrames = "100" - 
nClientBackgroundAutoUpdateLessRecentlyPlayedThresholdHours = "192" - If you've played the game more recently than this, we'll schedule the background update sooner.
nClientBackgroundAutoUpdateNotPlayedTimeSpreadDays = "14" - If the user hasn't played this game in a while, pick a morning up to this many days out to update.
nClientBackgroundAutoUpdateRecentlyPlayedThresholdHours = "72" - If you've played the game more recently than this, we'll schedule the background update sooner.
nClientBackgroundAutoUpdateTargetHour = "4" - Target hour, in local time, for auto-scheduled app updates. Will be spread around this point via the convar below.
nClientBackgroundAutoUpdateTimeSpreadMinutes = "360" - Spread of time around the above target hour - this is the +/- 2-sigma window, so half this on either side.
nCloudFileCompressionMinFileSizeKB = "16" - 
nCloudFileCompressionMinFileSizeKBSharedFile = "128" - 
nCloudFileCompressionPercentageMin = "10" - 
nCloudFileCompressionPercentageMinSharedFile = "50" - 
nCloudUploadMinIntervalSec = "1800" - 
nCloudUploadNetworkTimeoutSeconds = "400" - 
nContentDownloadsToOtherDrive = "1" - Allow to download updates to other drives then install folder is on
nContentStatsReportInterval = "72" - In Hours
nDepotSaveCorruptChunks = "0" - 
net_fake_state - {normal|NoLAN|CaptivePortal_Redirected|CaptivePortal_InPlace|NoInternet|NoSteam} Simulate network conditions
net_incomingcheck = "1" - 
net_maxresendsperframe = "32" - 
net_msgdump - Dumps list of sent net messages
net_msgspew - Spews sent and recv net messages
nPeerContentDefaultMode = "1" - 0 = off, 1 = only me, 2 = only friends, 3 = anyone
nPrivateBetaBranches = "2" - 
nProductInfoUpdateInterval = "900" - 
nRichPresenceUploadThrottleSecs = "5" - 
nSubscribedAutoDownloadMaxSimultaneous = "8" - 
open - opens a main Steam navigation page to the specified internal URL
p2p_connecttimeout = "15" - 
p2p_info - usage: "p2p_info" Displays the current state of the P2P networking subsystem.
p2p_unusedtimeout = "120" - 
package_info_print - Dumps package info for packageID
patch_dump - <filename> <depotid>
peer_content_server_status - Dumps status of peer content server
prepare_for_suspend - test suspending all games
print_sdr_ping - print current sdr ping location string 
profile_dump - Tells vprof to dump the full profile of all threads (using the last profile data if vprof is off)
profile_off - Turns off vprof and halts profiling
profile_on - Turns on vprof and begins profiling
profile_on_dump_spikes - Turns on vprof, and enables automatic dumping of any single frame that contains spikes above the given threshold in milliseconds (use the regular profile_off to stop)
profile_show_gui - Tells UI to pop a profile dialog for each known thread, must use profile_on/off separately to actually enable/disable data gathering
quit - quit [force|now|system] : instructs the Steam client to do a safe or forced exit
remote_clients - dump remote client info
render_ipc_connections - usage: "render_ipc_connections
reset_all_stats - Clears all stats and achievement
resume_suspended_games - test resuming all games
rtime32EarliestSubscribedFileToDownload = "1354389910" - 
sc_kalman_a_vel = "1.0" - 
sc_kalman_fastq = "0" - 
sc_kalman_h_vel = "1.0" - 
sc_kalman_q_vel = "2.0" - 
sc_kalman_r_vel = "2.0" - 
sc_kalman_slowq = "0" - 
service_findlock - Find process locking file
service_repair - Repair Steam service
service_restart - Restarts Steam Windows service 
service_test - Test Steam service
set_download_throttle - set_download_throttle <kbps> <bPersistent = false>
set_spew - <group> <spewlevel> <loglevel> Sets spew and log levels for a given group
set_spew_level - <SpewLevel LogLevel> Sets spew and log levels for all groups
set_var - <name> <value>- Set the value of a Cvar
shader_build - shader_build <appId> <optionalThreadCount>
shader_process - shader_process <appId> <bucketID> <optionalOverrideBasePath>
shader_prune - shader_prune
shader_scan - shader_scan <appId> <optionalOverridePath>
spew_controller_loss = "0" - 
stats_dump - stats_dump [filter] : dumps matching debug stats
stats_gui - stats_gui : show debug stats panel
stats_monitor - stats_monitor <stat name> [rate] [KB|MB] : monitor a debug stat value
stats_reset - stats_reset [filter] : set matching stats back to 0
streaming_log_spikes = "0" - 
test_dropcon - Tests dropping a connection
test_failnextconnect - Tests failing the next connection
test_opus_voice_encode - test an opus voice encode
test_reconnect - Reconnect after using test_failnextconnect&test_dropcon
test_resume_from_suspend - test on resume from suspend
test_voice_encode - test a voice encode
testappcloudpaths = "0" - 
timed_trial_add_playtime - timed_trial_add_playtime <appId> <seconds>: add trial app playtime (developer only)
timed_trial_reset_playtime - timed_trial_reset_playtime <appId> : reset trial app playtime (developer only)
timed_trial_status - timed_trial_status <appId> : show time trial app status
ugc_query_default_cache_time = "600" - 
ugc_query_max_get_details = "1000" - 
UGCCDNReportPct = "0" - 
unShaderBackgroundProcessingThreads = "0" - 
unShaderHighPriorityProcessingThreads = "0" - 
unShaderHitCacheGeneration = "4" - 
unShaderMaxHeadersPerMessage = "1024" - 
unShaderMaxUploadMessageSizeKb = "256" - 
user_friends - Dumps list of friends
user_info - Dump various Steam info
verify_chunk_store - verify_chunk_store <appid> <depotid> <datafile> : run app depot build as specified in appbuildfile
verifySignaturesBeforeLaunch = "1" - 
vgui_autocomplete_new_style = "1" - 
vgui_spewpanelstats - spew active panel stats
voice_api_optimalrate = "24000" - 
voice_autogain = "0" - 
voice_fakeloss = "0" - 
voice_game_usage - displays information about the game's use of Steam voice
voice_minabs = "0.15" - 
voice_minavg = "1.0" - 
voice_outputdevice = "0" - 0=>Miles 1=>XAudio2
voice_outputfile = "" - causes output from voice system to be written out to the specified file
voice_preprocess = "0" - enables voice cleanup on incoming microphone data
voice_quality = "6" - 
voice_resample_quality = "1" - 
voice_silk_bitrate = "30000" - 
webui_transport_error_fatal = "0" - 
windows_info - system_info : prints system information
workshop_download_item - workshop_download_item <appid> <PublishedFileId> : download a workshop item
workshop_items_cache_days = "14" - 
workshop_items_update_interval = "2700" - 
workshop_status - workshop_status <appId>

Hey,
Does anyone know how to use -opendevtools i cant seem to get it working

Hey, Does anyone know how to use -opendevtools i cant seem to get it working

In powershell the following works fine for me. & 'C:\Program Files (x86)\Steam\steam.exe' -opendevtools