inworld

inworld is a skill for Claude Code, Codex from itechmeat/llm-code. It costs 66 tokens per session (1,020 once invoked), scanned B, original, MIT.

Guidance for using the Inworld text-to-speech API, a service that turns written text into spoken audio. It covers voice cloning, speech controls, pronunciation, and timing data for matching speech with animation.

In plain words
What is it for?
Use it to generate spoken audio, clone a voice from a short recording, control emotion or pronunciation, and align speech with lip movements.
Why use it?
It helps developers integrate speech generation without having to discover the API's request format and timing concepts themselves.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to generate spoken audio, clone a voice from a short recording, control emotion or pronunciation, and align speech with lip movements.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/itechmeat/llm-code/inworld
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add itechmeat/llm-code --skill inworld
Clone the repo
git clone --depth 1 https://github.com/itechmeat/llm-code

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for inworld

README.md
[![agentmods](https://agentmods.dev/badge/skills/itechmeat/llm-code/inworld/github.svg)](https://agentmods.dev/skills/itechmeat/llm-code/inworld)
Your own site
<a href="https://agentmods.dev/skills/itechmeat/llm-code/inworld"><img src="https://agentmods.dev/badge/skills/itechmeat/llm-code/inworld/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for inworld

Your own site · 80×15
<a href="https://agentmods.dev/skills/itechmeat/llm-code/inworld"><img src="https://agentmods.dev/badge/skills/itechmeat/llm-code/inworld.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 66 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,020 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00066 $0.01020
Opus 5.5 $0.00026 $0.00408
Sonnet 5.5 $0.00013 $0.00204
Haiku 4.5 $0.00007 $0.00102

Measured 24d ago against content hash 2422f361642e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

inworld scanned grade B with 2 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 24d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Sends data to an external URLmediumData exfiltration

A POST to an outside endpoint may be telemetry or may be exfiltration; either way the mod talks to somewhere, and you should know where.

response = requests.post( "https://api.inworld.ai/tts/v1/voice",

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

response = requests.post(
skills/inworld/SKILL.md · 88 lines

How it starts

The opening of the file, as written. The whole thing — 88 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Inworld AI

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

Quick Navigation

Topic Reference
Installation installation.md
Voice Cloning cloning.md
Voice Control voice-control.md
API Reference api.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

Model ID Latency Price
TTS-2 Flash inworld-tts-2-flash lowest see pricing
TTS-2 inworld-tts-2 latest see pricing
TTS 1.5 Max inworld-tts-1.5-max legacy legacy
TTS 1.5 Mini inworld-tts-1.5-mini legacy legacy

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
  • TTS-2 steering — natural-language bracketed directions such as [say excitedly] or [whisper in a hushed style]
  • Delivery mode — STABLE, BALANCED, CREATIVE trade consistency for emotional range
  • Cross-lingual synthesis — reuse one voice across multiple languages; voice localization improves native-sounding output

Read the full file on GitHub · 88 lines

Files

What ships with it

5 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 24d ago Changed 2422f361642e
  2. 1mo ago Changed · +7 lines fbf9a45a78f1
  3. 1mo ago First seen · 81 lines · 66 tokens per session scan B cea61dd1d120

Subscribe to this mod's changes

inworld is a skill published in the GitHub repository itechmeat/llm-code (24 stars, last pushed 24d ago), licensed MIT. It adds 66 tokens to every session and 1,020 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it B with 2 findings (sends data to an external url, makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Related

Other skills, from other repositories

local-ai-agents

Build local-first AI agents that run entirely on a developer workstation with Microsoft Foundry Local and Qwen function-calling models. Covers Small Language Models (SLMs), the OpenAI-compatible local endpoint, sandboxed local tools, local RAG with Chroma, local MCP servers, hybrid cloud/local routing, and the…

microsoft/ai-agents-for-beginners · 200 tokens

next-cache-components-adoption

Turn on Cache Components in a Next.js app and resolve the blocking routes it surfaces. Use when the user wants to enable, adopt, or migrate to Cache Components, flip the cacheComponents flag, work through a flood of blocking-prerender / instant validation errors, run the cache-components-instant-false codemod, or…

vercel/next.js · 95 tokens

chronicle

Analyze Copilot session history for standup reports, usage tips, session search, and session reindexing. Use when the user asks for a standup, daily summary, usage tips, workflow recommendations, wants to search or find past sessions by keyword/file/PR, wants to reindex their session store, or asks about deleting…

microsoft/vscode · 72 tokens

systematic-debugging

Use when encountering any bug, test failure, or unexpected behavior, before proposing fixes.

obra/superpowers · 21 tokens

chat-pet-sprite-creation

Use when creating or changing VS Code chat pet sprite art, sprite sheets, state animations, eye treatments, Stable/Insiders variants, or pet transitions under src/vs/workbench/contrib/chat/browser/widget/media/chatPet.

microsoft/vscode · 53 tokens

component-fixtures

Use when creating or updating component fixtures for screenshot testing or their shared infrastructure, or when designing UI components to be fixture-friendly. Covers fixture file structure, theming, service setup, CSS scoping, async rendering, validation, and common pitfalls.

microsoft/vscode · 53 tokens