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moltbot/docs/providers/inworld.md
Vincent Koc fcb188a41a docs(providers): tighten SenseAudio, Xiaomi, and Inworld pages 
SenseAudio (docs/providers/senseaudio.md): removed the duplicate
'# SenseAudio' H1 (Mintlify renders title from frontmatter; an in-body
H1 produces a brittle anchor). Reordered the properties table to lead
with provider id, plugin, and the speechProviders/mediaUnderstanding
contract before the website/docs links, sourced from
extensions/senseaudio/openclaw.plugin.json. Lowercased the H2 to
'Getting started' for consistency.

Xiaomi (docs/providers/xiaomi.md): expanded the 4-row properties table
to include plugin, onboarding flag, direct CLI flag, and contracts
(chat completions plus speechProviders). The TTS default is surfaced
inline so readers see the dual-contract setup in one glance, sourced
from extensions/xiaomi/openclaw.plugin.json.

Inworld (docs/providers/inworld.md): renamed the table header from
'Detail' to 'Property' and added bundled-plugin status and the
speechProviders contract. Surfaced the audio output formats (MP3,
OGG_OPUS, PCM 22050 Hz) as a Property row so readers do not have to
read the Audio outputs accordion to confirm telephony support.
Verified against extensions/inworld/openclaw.plugin.json.
2026-05-05 17:33:59 -07:00

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summary, read_when, title
summary read_when title
Inworld streaming text-to-speech for OpenClaw replies
You want Inworld speech synthesis for outbound replies
You need PCM telephony or OGG_OPUS voice-note output from Inworld
Inworld

Inworld is a streaming text-to-speech (TTS) provider. In OpenClaw it synthesizes outbound reply audio (MP3 by default, OGG_OPUS for voice notes) and PCM audio for telephony channels such as Voice Call.

OpenClaw posts to Inworld's streaming TTS endpoint, concatenates the returned base64 audio chunks into a single buffer, and hands the result to the standard reply-audio pipeline.

Property Value
Provider id inworld
Plugin bundled, enabledByDefault: true
Contract speechProviders (TTS only)
Auth env var INWORLD_API_KEY (HTTP Basic, Base64 dashboard credential)
Base URL https://api.inworld.ai
Default voice Sarah
Default model inworld-tts-1.5-max
Output MP3 (default), OGG_OPUS (voice notes), PCM 22050 Hz (telephony)
Website inworld.ai
Docs docs.inworld.ai/tts/tts

Getting started

Copy the credential from your Inworld dashboard (Workspace > API Keys) and set it as an env var. The value is sent verbatim as the HTTP Basic credential, so do not Base64-encode it again or convert it to a bearer token. 
```
INWORLD_API_KEY=<base64-credential-from-dashboard>
```
```json5 { messages: { tts: { auto: "always", provider: "inworld", providers: { inworld: { voiceId: "Sarah", modelId: "inworld-tts-1.5-max", }, }, }, }, } ``` Send a reply through any connected channel. OpenClaw synthesizes the audio with Inworld and delivers it as MP3 (or OGG_OPUS when the channel expects a voice note).

Configuration options

Option Path Description
apiKey messages.tts.providers.inworld.apiKey Base64 dashboard credential. Falls back to INWORLD_API_KEY.
baseUrl messages.tts.providers.inworld.baseUrl Override Inworld API base URL (default https://api.inworld.ai).
voiceId messages.tts.providers.inworld.voiceId Voice identifier (default Sarah).
modelId messages.tts.providers.inworld.modelId TTS model id (default inworld-tts-1.5-max).
temperature messages.tts.providers.inworld.temperature Sampling temperature 0..2 (optional).

Notes

Inworld uses HTTP Basic auth with a single Base64-encoded credential string. Copy it verbatim from the Inworld dashboard. The provider sends it as `Authorization: Basic ` without any further encoding, so do not Base64-encode it yourself and do not pass a bearer-style token. See [TTS auth notes](/tools/tts#inworld-primary) for the same callout. Supported model ids: `inworld-tts-1.5-max` (default), `inworld-tts-1.5-mini`, `inworld-tts-1-max`, `inworld-tts-1`. Replies use MP3 by default. When the channel target is `voice-note` OpenClaw asks Inworld for `OGG_OPUS` so the audio plays as a native voice bubble. Telephony synthesis uses raw `PCM` at 22050 Hz to feed the telephony bridge. Override the API host with `messages.tts.providers.inworld.baseUrl`. Trailing slashes are stripped before requests are sent.

Related

TTS overview, providers, and `messages.tts` config. Full config reference including `messages.tts` settings. All bundled OpenClaw providers. Common issues and debugging steps.