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claude-code

Claude-skill-registry inworld

Inworld TTS API. Covers voice cloning, audio markups, timestamps. Keywords: text-to-speech, visemes.

install
source · Clone the upstream repo
git clone https://github.com/majiayu000/claude-skill-registry
Claude Code · Install into ~/.claude/skills/
T=$(mktemp -d) && git clone --depth=1 https://github.com/majiayu000/claude-skill-registry "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/data/inworld" ~/.claude/skills/majiayu000-claude-skill-registry-inworld && rm -rf "$T"
manifest: skills/data/inworld/SKILL.md
source content

Inworld AI

Text-to-Speech platform with voice cloning, audio markups, and timestamp alignment.

Quick Navigation

TopicReference
Installationinstallation.md
Voice Cloningcloning.md
Voice Controlvoice-control.md
API Referenceapi.md

When to Use

  • Text-to-speech audio generation
  • Voice cloning from 5-15 seconds of audio
  • Emotion-controlled speech (
    [happy]
    , 
    [sad]
    , etc.)
  • Word/phoneme timestamps for lip sync
  • Custom pronunciation with IPA

Models

ModelIDLatencyPrice
TTS 1.5 Max
inworld-tts-1.5-max
~200ms$10/1M chars
TTS 1.5 Mini
inworld-tts-1.5-mini
~120ms$5/1M chars

Minimal Example

import requests, base64, os

response = requests.post(
    "https://api.inworld.ai/tts/v1/voice",
    headers={"Authorization": f"Basic {os.getenv('INWORLD_API_KEY')}"},
    json={"text": "Hello!", "voiceId": "Ashley", "modelId": "inworld-tts-1.5-max"}
)
audio = base64.b64decode(response.json()['audioContent'])

Key Features

  • 15 languages — en, zh, ja, ko, ru, it, es, pt, fr, de, pl, nl, hi, he, ar
  • Instant cloning — 5-15 seconds audio, no training
  • Audio markups — 
    [happy]
    , 
    [laughing]
    , 
    [sigh]
    (English only)
  • Timestamps — word, phoneme, viseme timing for lip sync
  • Streaming — 
    /voice:stream
    endpoint

Prohibitions

  • Audio markups work only in English
  • Use ONE emotion markup at text beginning
  • Match voice language to text language
  • Instant cloning may not work for children's voices or unique accents

Links