xb-lipsync
xb-lipsync is a Graphics, 3D & shaders skill for AI agents, published by google in the xrblocks repository on GitHub. Skillspace rates xb-lipsync D (57/100) and it passed the safety scan; the rating is based on static analysis only.
Add audio-driven avatar mouths to an XR Blocks app with the lipsync addon — heuristic vowel-formant viseme mapping that turns any `MediaStream` (mic or remote peer's voice) into mouth shapes on a `StylizedFace` decal attached to an avatar's head. Zero ML runtime, no model download. Use when you want shared rooms to stop being silent spheres and become faces that visibly speak, or to lip-sync a TTS playback to an NPC. Covers `LipsyncMouth`, `xb.StylizedFace`, the `target`/`audioContext`/`fftSize` constructor options, and the `session.voice.onTrack` netblocks pairing. Lower-level pieces (`FormantVisemeMapper`, `MfccExtractor`, `computeAudioFeatures`) and types (`VisemeWeights`, `VisemeTarget`) are exported for swapping in a model-based mapper. Full reference at src/addons/lipsync/.
- Grade
- D
- Quality
- 57 / 100
- Safety
- Passed
- GitHub stars
- 444
Unproven: rated by static analysis only, not yet compared head-to-head.
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Our review
- Architecture
- 79 / 100
- Maturity
- Basic: a single SKILL.md
- Security scan
- No issues found
- License
- Apache-2.0
- Adoption
- Adopted by 0 other repositories, in 0 collections
Not checked yet
- Not judged on the rubric yet (not a contender in its category)
- No blind task eval yet
- Scope (portable / vendor / repo-internal) not assessed; only the top of each category is read for scope
- Sibling files (scripts, references) not fetched; security scan covers SKILL.md only
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