bh_KeyTools for Unreal Engine
bh_KeyTools for Unreal Engine by Brian Horgan is an animation plugin that adds key and tangent tools to the Sequencer curve editor in Unreal Engine 5.7 and later: invert, zero, smooth, average, tighten ease, loop fixes, redundant key cleanup and inertia keys. For animators, especially ones coming from Maya, who lose time to curve editor operations that should take half a second. Windows 64-bit.
Pay once, own it outright. One licence per seat for commercial work.
Buy personal licensePay once, own it outright. One licence per seat for commercial work.
Buy professional license- The commercial licence is a one-time purchase: pay once, no subscription, no expiry.
- Per seat: one licence for each artist using it commercially.
- Your licence key arrives by email and always lives in your dashboard.
- Includes updates and activation support.
- Studios and larger teams: volume seats and invoice billing, get in touch.
- 30 Jul 2026
- Last updated
- 2 Jun 2026
- Released
- Works with
- Unreal Engine 5.7 or later
- Licence
- Personal or Professional
- File size
- 76.9 KB
- Platform
- Windows 64-bit
- Runs in
- Sequencer curve editor
Unreal 5.7+
Instant download Vetted creator
Three Sequencer curve editor jobs it takes off your plate
Curve edits that should be instant are not
Inverting, zeroing or averaging keys in Sequencer takes more steps than it should. bh_KeyTools does each in one operation, with clean undo.
Loops that do not loop cleanly
Cyclic animation in Sequencer tends to pop at the seam. Fix Loop Tangents and Fix Loop Values are a pair built to make cycles line up.
Noisy mocap and cluttered curves
Average and Smooth soften noise in mocap or dense animation data, and Delete Redundant Keys strips keys that add nothing, within a tolerance.
Inside bh_KeyTools for Unreal Engine
Brian built this from years of animating in engine, not from reading the API docs. Every tool solves a problem you will have run into in Sequencer: tangents that will not sit right, loops that do not loop, keys that need inverting or zeroing. The tools are scoped tight, undo properly, and work with Control Rig selections.
Smooth selected keys
Applies a spline-type ease in and out across selected keys. Good for softening mocap or detailed animation data.
Tight Ease selected keys
Like Smooth, with a much tighter ease in and out.
Average selected keys
Softens the difference between keys, useful for removing noise from mocap.
Linearize selected keys
Adjusts values to keep transitions linear, for fixing sliding feet in walks and runs.
Invert and Zero selected keys
Invert flips values and tangents in place with the tangent shape preserved. Zero sets values to zero in one click.
Inertia Key
Adds procedural overshoot and settle behaviour to your curve.
Delete Redundant Keys
Removes keys that do not contribute to the curve, within a tolerance.
Fix Loop Tangents and Fix Loop Values
A pair of tools for cyclic animation, including gameplay cycles.
Scale keys from average
Scales the amplitude of selected keys from their average.
Tangent debug tools
Visualise and inspect tangent values when troubleshooting curves.
Compatibility
- Unreal Engine
- 5.7 or later
- Operating system
- Windows 64-bit
- Personal licence
- Individuals or teams under $100k revenue or funding a year
- Professional licence
- Studios or other entities with over $100k revenue or funding in the past 12 mont
- Documentation
- Videos included: How To Install, and Launching and Using The Tools
What animators say
No reviews yet
No reviews yet. If you have used it, you would be the first to say so.
Used this in a shot? Your notes help the next animator decide.
Sign in to reviewEvery plugin on Animworks is checked by our team before it goes live.
Questions and bug reports go straight to Brian Horgan, or email support@anim.works.
It lands in your downloads the moment you check out, and stays there.



