Doubao Tts

What it does

When your agent uses it

• Creating Chinese voiceovers
• The user prefers Doubao/Volcengine/火山引擎/豆包 TTS
• Narration needs character-level timestamp metadata for subtitles

Example prompts

• “/doubao-tts”

Requirements

• Python 3
• A credential in DOUBAO_SPEECH_API_KEY

Workflow steps

7 steps, taken from the first numbered list in SKILL.md.

1. 1Generate a 10-15 second sample before a full paid narration.
2. 2Ask the user to approve voice naturalness, accent, and speed.
3. 3Generate the full narration only after approval.
4. 4Keep the query JSON. It is the source of truth for subtitle timing.
5. 5Build captions from sentences[].words[], not from estimated text length.
6. 6Group captions by Chinese semantic phrases before applying timestamps. Do not split only by fixed character count; it can break phrases…
7. 7Let the video duration follow the approved voice rhythm unless the user explicitly asks to match a prior runtime.

What it can do on your machine

Read from SKILL.md and the folder at commit 9327439. It shows what the files ask for, not the result of running them.

• Tool permissions

  Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

  From allowed-tools in the SKILL.md frontmatter.

• Runs code

  No scripts in the folder and no shell commands in SKILL.md (its code samples are python).

  From the folder's file list and the shell code blocks in SKILL.md.

• Network

  Hosts in commands or code, which the agent is likely to contact:

  • openspeech.bytedance.com

  From URLs in SKILL.md, links to its own repository left out.

• Credentials

  Names these keys or tokens, usually read from environment variables:

  • DOUBAO_SPEECH_API_KEY

  From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Doubao Tts loads about 988 tokens when it runs. Until then it costs about 64 tokens; SKILL.md has 399 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~64

When it runs · the whole SKILL.md, loaded when a task matches

~988

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

• NoteMentions a .env fileSKILL.md:8

  Requires `DOUBAO_SPEECH_API_KEY` in `.env`.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from calesthio/OpenMontage at commit 9327439, republished under its AGPL-3.0 licence (© calesthio). 399 words, ~988 tokens.

name

doubao-tts

description

Generate Mandarin and multilingual narration with Volcengine Doubao Speech 2.0. Use when creating Chinese voiceovers, when the user prefers Doubao/Volcengine/火山引擎/豆包 TTS, or when narration needs character-level timestamp metadata for subtitles.

X-Api-Key: ${DOUBAO_SPEECH_API_KEY}
X-Api-Resource-Id: seed-tts-2.0

POST https://openspeech.bytedance.com/api/v3/tts/submit
POST https://openspeech.bytedance.com/api/v3/tts/query

from tools.audio.tts_selector import TTSSelector

result = TTSSelector().execute({
    "preferred_provider": "doubao",
    "text": "如果 AI 真的会改变未来，普通人到底该怎么参与？",
    "voice_id": "zh_female_vv_uranus_bigtts",
    "output_path": "projects/my-video/assets/audio/narration.mp3",
    "speech_rate": 0,
    "enable_timestamp": True,
})

from tools.audio.doubao_tts import DoubaoTTS

result = DoubaoTTS().execute({
    "text": "短样本试听文本。",
    "voice_id": "zh_female_vv_uranus_bigtts",
    "output_path": "projects/my-video/assets/audio/doubao_sample.mp3",
})

© calesthio, AGPL-3.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

Just SKILL.md in .agents/skills/doubao-tts of calesthio/OpenMontage.

Open the folder on GitHubat commit 9327439