Interop

Set up and use Akron’s runtime integrations with Motion Smoothing, Speedrun Tool, CelesteTAS, Extended Variant Mode, and Extended Camera Dynamics.

Akron detects compatible mods at runtime and adds overlay rows automatically. These integrations are optional. If a mod is not installed, its rows do not appear.

External tool actions can change your attempt status. Check the Classification column for each row before using interop features in a submitted run. See External tools for the full option list.

Supported integrations

Area	What it adds
Motion Smoothing	FPS Bypass and TPS Bypass rows on the Global tab.
Speedrun Tool	State capture and restore slots, room timer readout, Tab key conflict mitigation, plus optional Lag Pauser handling for load-state hitches.
CelesteTAS	TAS status detection and a configured .tas file playback action.
Extended Variant Mode	Variant reset, master toggle, and randomizer controls.
Extended Camera Dynamics	Camera hook status and Cursor Zoom zoom-out support.

Motion Smoothing

When Motion Smoothing is loaded, Akron drives its FPS Bypass and TPS Bypass settings directly from the overlay. You do not need to configure both mods separately because Akron applies your configured values to Motion Smoothing’s runtime.

Motion Smoothing’s higher-FPS path keeps Celeste simulation at 60 TPS while drawing extra frames, and its camera smoothing can work even at 60 Hz. Akron marks FPS Bypass and its physics-neutral smoothing options as Normal clear. Objects: Interpolate, TAS mode, and Nasty mode are Cheat. TPS Bypass is also Cheat because it changes simulation cadence.

Speedrun Tool

Speedrun Tool interop provides state-capture slots, room timer data, a Tab key conflict fix, and coordinated Lag Pauser handling for state transitions. The rows appear only when Speedrun Tool is loaded.

Behavior	Details
Tab key conflict	If both Akron and Speedrun Tool bind Tab, Akron removes Speedrun Tool’s Tab binding at startup so the overlay toggle works.
Room timer	Akron reads room-timing data from Speedrun Tool’s RoomTimer export. Room timer actions are Normal clear because they read data without changing live gameplay.
State capture and restore	Capture, restore, and clear actions map to Speedrun Tool’s TAS save slots. These are Cheat because they change live game state.
Lag Pauser > Ignore SRT	Suppress Lag Pauser spike detection briefly around Speedrun Tool load-state hooks so intentional load hitches do not count as player lag spikes.

CelesteTAS

CelesteTAS integration detects whether a TAS is active or running and provides a handoff action that starts playback for a configured .tas file. The rows appear only when CelesteTAS is loaded.

Behavior	Details
TAS playback	Cheat. Keep TAS handoff in practice, testing, or development setups instead of submitted attempts.
TAS status and configured file	Normal clear because these rows are read-only.

Extended Variant Mode

Extended Variant Mode interop exposes variant reset, master toggle, and randomizer controls when the mod is loaded. Akron reads and changes individual variant values at runtime, so the available rows depend on the installed Extended Variant Mode option list.

Behavior	Details
Reset Extended and Reset Vanilla	Normal clear because they restore Extended Variant Mode values to their defaults.
Extended Variants Master	Goldberry/Hardlist clear because some maps need Extended Variant Mode hooks enabled for their own dependencies.
Extended Variants Randomizer and user-controlled non-default variants	Cheat because they change active gameplay rules.
Map-defined variant values	Akron does not flag values that match Extended Variant Mode’s current map-defined value.

Extended Camera Dynamics

Extended Camera Dynamics interop exposes camera hook status and an ECD Zoom Out toggle when the mod is loaded. The toggle allows Akron Cursor Zoom to go below 100% through Extended Camera Dynamics when the current map has ECD camera hooks active. ECD zoom-out stays centered on the player. Zooming in above 100% and neutral 100% zoom still use Akron’s native cursor-focused Cursor Zoom behavior.

Behavior	Details
ECD Status	Normal clear because it only reports whether the external camera hooks are active.
ECD Zoom Out	Cheat because it extends Akron Cursor Zoom for camera inspection.
ECD Restore Zooming	Normal clear because it returns Extended Camera Dynamics to automatic camera behavior after a forced Cursor Zoom focus.