tts

A command that turns written text into spoken audio and saves the result as a local file; this is called text-to-speech.

In plain words
What is it for?
Use it to synthesize speech, list available voices, or set the output path, format, sample rate, and bit rate.
Why use it?
It creates voice audio without recording it manually and lets you choose a voice, language, and file format.

Command

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.

agentmods
npx agentmods add commands/moore-developers/grok-cli/tts
Clone the repo
git clone --depth 1 https://github.com/Moore-developers/grok-cli
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 668 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00668
Opus 5 $0.00000 $0.00334
Sonnet 5 $0.00000 $0.00134
Haiku 4.5 $0.00000 $0.00067

Measured 2d ago against content hash bd25089d77e7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

tts scanned grade A with 0 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 2d 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.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

docs/commands/tts.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.

grok-cli tts

Purpose

Convert text to speech and save the audio locally.

Common Usage

grok-cli tts "Hello from Grok"

Choose voice, language, and output file:

grok-cli tts "Hello, I am Grok" --voice-id eve --language zh --output ./out/grok.mp3

Script or skill usage:

grok-cli tts --json --text "Hello from Grok"

List available voices:

grok-cli tts --list-voices --json

Control output format explicitly:

grok-cli tts "Hello" --output-format mp3 --sample-rate 24000 --bit-rate 128000

Parameters

  • TEXT: positional input text.
  • --text <TEXT>: explicit script-friendly text.
  • --list-voices: list available TTS voices without synthesizing audio.
  • --json: use the standard JSON envelope.
  • --auth-file <PATH>: override the OAuth state file path.
  • --voice-id <VOICE>: voice id, default eve.
  • --language <LANG>: language code, default en; auto is allowed.
  • --output <PATH>: output audio path.
  • --output-format <FORMAT>: output format, such as mp3 or wav.
  • --sample-rate <HZ>: output sample rate.
  • --bit-rate <BPS>: output bit rate.
  • --optimize-streaming-latency <MODE>: pass through xAI TTS streaming latency optimization mode.
  • --text-normalization <MODE>: pass through xAI TTS text normalization mode.
  • --model <MODEL>: command-level model override, mainly for compatibility and usage tagging.
  • --timeout <SECONDS>: request timeout, default 120.

Behavior

  • Default output path lives under ~/.hermes/cache/audio/audio_cache/.
  • If the output file extension is .wav, the request sends output_format=wav.
  • If --output-format is passed explicitly, it must match the output file extension.
  • The xAI TTS request body sends text, voice_id, language, and optionally output_format, optimize_streaming_latency, and text_normalization.
  • --list-voices calls GET /v1/tts/voices and returns a voice list without requiring text.
  • Access token expiry is checked before the request. If needed, the command refreshes first.
  • Successful calls are written to the local usage SQLite database under audio usage.

Read the full file on GitHub · 88 lines

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. 2d ago First seen · 88 lines · 0 tokens per session scan A bd25089d77e7

Subscribe to this mod's changes

tts is a command published in the GitHub repository Moore-developers/grok-cli (52 stars, last pushed 19d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 668 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.