Two migrations live here:

0.2.x → 0.3.0 — current pre-release cutover. Package scope rename
- symbol consolidation (single Provider, single mount component). Most readers want this.
Legacy → 0.2.x — older architectural migration (server-side visemes → on-device WebAssembly). Kept for integrators on the pre-0.2 SDK.

0.2.x → 0.3.0

The 0.3.0 release unifies SDK naming across the package scope and the React component surface. Hard cutover — no deprecated aliases. The bytes computing visemes are unchanged; only names and the mount shape moved.

Package scope

.npmrc

# 0.2.x
@mascotbot-sdk:registry=https://npm.mascot.bot/

# 0.3.0
@mascotbot:registry=https://npm.mascot.bot/

# package.json
- "@mascotbot-sdk/lipsync-core":         "^0.2.9",
- "@mascotbot-sdk/lipsync-react":        "^0.2.9",
+ "@mascotbot/core":         "^0.3.0",
+ "@mascotbot/react":        "^0.3.0",

The same renaming applies to lipsync-native → @mascotbot/native and lipsync-react-native → @mascotbot/react-native for RN integrators.

React mount — one Provider, one component

- import { LipsyncProvider, useLipsync } from "@mascotbot-sdk/lipsync-react";
- import {
-   MascotProvider, MascotClient, MascotRive,
-   useMascotPlayback, useMascotInputs,
- } from "@mascotbot-sdk/lipsync-react/rive";
+ import { MascotProvider, useMascot } from "@mascotbot/react";
+ import {
+   Mascot, MascotRive,
+   useMascotPlayback, useMascotInputs,
+ } from "@mascotbot/react/rive";

- <LipsyncProvider apiKey="mascot_pub_…">
-   <MascotProvider>
-     <MascotClient src="/avatar.riv">
-       <MascotRive />
-     </MascotClient>
-   </MascotProvider>
- </LipsyncProvider>
+ <MascotProvider apiKey="mascot_pub_…">
+   <Mascot src="/avatar.riv" />
+ </MascotProvider>

If you previously wrapped <MascotRive /> (or a loading slot) inside <MascotClient>, pass those as children of <Mascot> instead — they take over from the default canvas:

<MascotProvider apiKey="mascot_pub_…">
  <Mascot src="/avatar.riv" inputs={["wave"]}>
    <div className="my-layout-wrapper">
      <MascotRive />
      <MyCustomOverlay />
    </div>
  </Mascot>
</MascotProvider>

Symbol rename — quick reference

0.2.x	0.3.0	Notes
`<LipsyncProvider>`	`<MascotProvider>`	Top-level provider; takes `apiKey`
`<MascotProvider>` (empty Rive marker)	gone	Merged into the top-level
`<MascotClient>` + `<MascotRive />`	`<Mascot>`	Single component; renders canvas by default. `<MascotRive />` stays as an escape hatch
`useLipsync()`	`useMascot()`	Same return shape
`MascotLipsyncClient`	`LipsyncClient`	Class — package scope provides brand
`MascotLipsyncConfig`	`LipsyncConfig`	Type
`LipsyncContextValue`	`MascotContextValue`	Type returned by `useMascot()`
`MascotClientContext` / `MascotClientContextType` / `MascotClientProps`	`MascotContext` / `MascotContextType` / `MascotProps`	Component renamed → matching types

Unchanged on purpose (feature-descriptive — lipsync here names what the thing is, not who ships it):

useProcessAudio(url)
useLipsyncStream({ source })
useMascotRive() / useMascotInputs() / useMascotPlayback()
LipsyncError / LipsyncStatus / LipsyncLogger
LipsyncStreamSource / LipsyncStreamFrame
LicenseError / NetworkError / EngineError / RefusedError
VisemeTimeline / VisemeCue / MascotPlayback (the class) / NaturalLipSync*

Migration steps (0.2.x → 0.3.0)

Update .npmrc + package.json

Change @mascotbot-sdk:registry=… to @mascotbot:registry=…, then rewrite the four dep names. pnpm install --force after — pnpm caches tarballs by hash, the new scope needs a fresh resolve.

Run the rename grep

git grep -nE '\b(LipsyncProvider|MascotClient|useLipsync|MascotLipsyncClient|MascotLipsyncConfig|LipsyncProviderProps|LipsyncContextValue|MascotClientContext|MascotClientContextType|MascotClientProps)\b'

Every hit needs the substitution in the table above. useLipsyncStream, LipsyncError, etc. are intentionally preserved — they survive because the word lipsync precisely describes what they are.

Collapse the Provider + Mascot mount

<LipsyncProvider><MascotProvider>… → single <MascotProvider apiKey>. <MascotClient src><MascotRive /></MascotClient> → <Mascot src /> if you don’t need a custom layout slot. If you do, change the tag name from MascotClient to Mascot and keep the children.

Typecheck + smoke

npx tsc --noEmit is the gate. Runtime behavior is identical — if types pass, runtime almost always passes too.

Legacy → 0.2.x

The 0.2.x SDK was a new architecture, not a renamed release. If you integrated a pre-0.2 build, the changes below still apply (cascade 0.2.x → 0.3.0 from the section above on top).

What changed, conceptually

Then (legacy)	Now (0.2.x+)
One legacy `@mascotbot/react` package (pre-0.2)	`@mascotbot/core` + `@mascotbot/react`, each with a `/rive` subpath
Visemes computed server-side and streamed to the client (REST `/v1/visemes`, SSE, a Mascot Bot WebSocket proxy, “viseme injection”)	Visemes computed by the SDK on-device. No proxy, no REST viseme API, no SSE viseme protocol
Provider-specific hooks (`useMascotElevenlabs`, `useMascotLiveAPI`, `useMascotOpenAI`) and a TTS hook (`useMascotSpeech`)	One realtime contract: tap the assistant’s audio into `useLipsyncStream({ source: { kind: "mediaStream", stream } })`. TTS server returns audio only; the SDK does the lip sync
`getSignedUrl` proxy that injected visemes	Provider wired with its own official SDK; server mints only a short-lived provider credential
`result.argmax` per-frame array	`result.timeline` — a serializable, versioned `VisemeTimeline`
Private-registry `.tgz` install	Private npm registry `npm.mascot.bot` with an `.npmrc` token

The dedicated provider guides (ElevenLabs, Gemini Live, OpenAI Realtime) and Realtime overview show the new wiring end to end.

Symbol map (legacy → 0.2.x — then add the 0.3.0 column above)

Legacy	0.2.x replacement
Legacy `@mascotbot/react` (pre-0.2)	`@mascotbot/react` + `@mascotbot/react/rive` (0.3.0 names)
`useMascot()`	`useMascotRive()` + `useMascotInputs()` (split the grab-bag — `rive`/render from the first, `custom`/`has`/`riveInputs` from the second)
`useMascotClient()`	`useMascotRive()` + `useMascotInputs()`
`useRiveInputs()`	`useMascotInputs()`
`useMascotSpeech()`	Server route returns audio → `createPCMStreamPlayer` + `useLipsyncStream`. See Realtime overview
`useMascotElevenlabs()`	ElevenLabs guide — own SDK + audio tap
`useMascotLiveAPI()`	Gemini Live guide
`useMascotOpenAI()`	OpenAI Realtime guide
`gesture: true` (auto-fire at utterance start)	The auto-fire is gone — the SDK never drives the `gesture` input. The built-in `stress` emphasis is `useMascotPlayback().stress([{ offset, stress }])`. A separate custom `gesture` trigger input is consumer-fired via `useMascotInputs().custom.gesture.fire()` — declare it on `<Mascot inputs={["gesture", ...]}>` first
`useMicLipsync()`	`useLipsyncStream({ source: { kind: "mic" } })`
`useStreamingLipsync()`	`useLipsyncStream({ source: { kind: "manual" } })`
`useMediaStreamLipsync()`	`useLipsyncStream({ source: { kind: "mediaStream", stream } })`
`playback.add(visemes)`	`playback.pushVisemes(cues)` (streaming) or `playback.setTimeline(tl)` (offline)
`loadPrefetchedData(...)`	Persist a `VisemeTimeline` JSON; replay via `parseTimeline` + `setTimeline`. See Offline lip sync
`result.argmax`	`result.timeline` (a `VisemeTimeline`)
`rive.stateMachineInputs(...)` introspection for presence	`useMascotInputs().has(name)` / `hasRiveInput(rive, name)`
Mascot Bot proxy / `get-signed-url` / `/v1/visemes`	Removed — hybrid architecture; license init + refresh against `license.mascot.bot`.

Hooks are not reference-stable

Legacy useMascot() returned a memoised, stable object; useMascotRive() / useMascotInputs() return a fresh wrapper every render.

Putting their return (custom, has, the whole handle) in a useEffect / useCallback dependency array re-runs it every render — e.g. a Rive event listener that re-binds ~60×/s. Capture what you need in a useRef and depend only on the stable rive instance (stable once loaded). riveInputs identity is stable, but the wrapper object and has are fresh per render — so this rule applies to them.

The one consumer responsibility that is real is full per-call teardown on a shared client — stop() + close() + null the stream state on every call-end path; see the Troubleshooting guide. A lingering pipeline on the shared client corrupts other widgets that use the same <MascotProvider>.

Quickstart

The current happy path.

Realtime overview

Provider wiring.

Troubleshooting

Post-migration issues.

Getting Started

Core concepts

React SDK

Core SDK (vanilla)

Realtime providers

Reference

Ready-made Mascots

Migrating the Mascotbot Lipsync SDK

0.2.x → 0.3.0

Package scope

React mount — one Provider, one component

Symbol rename — quick reference

Migration steps (0.2.x → 0.3.0)

Legacy → 0.2.x

What changed, conceptually

Symbol map (legacy → 0.2.x — then add the 0.3.0 column above)

Hooks are not reference-stable

Next

Quickstart

Realtime overview

Troubleshooting

Getting Started

Core concepts

React SDK

Core SDK (vanilla)

Realtime providers

Reference

Ready-made Mascots

Documentation Index

​0.2.x → 0.3.0

​Package scope

​React mount — one Provider, one component

​Symbol rename — quick reference

​Migration steps (0.2.x → 0.3.0)

​Legacy → 0.2.x

​What changed, conceptually

​Symbol map (legacy → 0.2.x — then add the 0.3.0 column above)

​Hooks are not reference-stable

​Next

Quickstart

Realtime overview

Troubleshooting

0.2.x → 0.3.0

Package scope

React mount — one Provider, one component

Symbol rename — quick reference

Migration steps (0.2.x → 0.3.0)

Legacy → 0.2.x

What changed, conceptually

Symbol map (legacy → 0.2.x — then add the 0.3.0 column above)

Hooks are not reference-stable

Next