speech-gen

name	speech-gen
description	Generate spoken audio from text with MiniMax Speech through Zditor Native Agent's http_request tool. Use when the user asks for text-to-speech, voice synthesis, narration, a voice-over, spoken dialogue, an audiobook excerpt, or calls this skill speech_gen or speech-gen.

MiniMax Speech Generation

Generate speech that preserves the user's text, language, pronunciation, pacing, emotion, voice preference, and intended use. Do not rewrite user-provided text unless requested. Do not imitate a living person's voice; translate that request into non-identifying vocal traits and use a suitable system voice. Use a custom or cloned voice_id only when the user supplies it and is authorized to use it.

Configure

This skill reads its endpoint and credential from the skill's .env file:

MINIMAX_SPEECH_API_URL=https://api.minimaxi.com/v1/t2a_v2
MINIMAX_API_KEY=<your MiniMax API key>

The Beijing fallback endpoint is https://api-bj.minimaxi.com/v1/t2a_v2. Change MINIMAX_SPEECH_API_URL only when the user requests or needs that endpoint.

Never read, print, or place MINIMAX_API_KEY directly in tool arguments or chat. If it is not configured, ask the user to set it in this skill's .env file. Advise users not to paste API keys into chat.

Prepare The Request

• Require non-empty text shorter than 10,000 characters and preserve it exactly unless the user asks for editing. Paragraph breaks may remain as newlines.
• Default to speech-2.8-hd. Use speech-2.8-turbo when the user prioritizes speed. Use an older supported model only when explicitly requested or required by a feature.
• Select a system voice_id that matches the requested language and vocal traits. If the user gives no preference, use male-qn-qingse for Chinese, English_Graceful_Lady for English, Japanese_KindLady for Japanese, or Korean_CalmLady for Korean. For other languages, select a compatible system voice from the official voice list.
• Default speed, vol, and pitch to 1, 1, and 0. Preserve explicit user settings within their supported ranges.
• Let the model infer emotion unless the user specifies one. Supported values are happy, sad, angry, fearful, disgusted, surprised, calm, fluent, and whisper; fluent and whisper only work with speech-2.6-hd and speech-2.6-turbo, while speech-2.8-* does not support whisper.
• Set language_boost when the user specifies a language or dialect. Use Chinese,Yue for Cantonese; otherwise use the matching supported language value or auto when uncertain.
• Preserve supported pause markers such as <#1.5#>, inline pronunciation overrides, and expressive tags. Expressive tags such as (laughs) and (sighs) require speech-2.8-hd or speech-2.8-turbo.
• Include pronunciation_dict, timbre_weights, voice_modify, text normalization, or LaTeX reading only when requested. Do not send voice_setting.voice_id when using timbre_weights.

For texts longer than 3,000 characters, tell the user that MiniMax recommends streaming. This skill should still use non-streaming URL output for a downloadable artifact unless the user asks to split the text or use another workflow.

Generate

Use non-streaming URL output so the completed audio can be downloaded and presented. Default to mono MP3 at 32 kHz and 128 kbps unless the user requests a supported alternative.

Call http_request with this shape, omitting optional fields that are not needed:

{
  "method": "POST",
  "url_skill_env": {
    "skill": "speech-gen",
    "key": "MINIMAX_SPEECH_API_URL"
  },
  "header_skill_env": {
    "Authorization": {
      "skill": "speech-gen",
      "key": "MINIMAX_API_KEY",
      "prefix": "Bearer "
    }
  },
  "headers": {
    "Content-Type": "application/json"
  },
  "body": {
    "type": "json",
    "value": {
      "model": 
       
       
       
         
         
         
         
      
       
         
         
         
         
      
       
       
       
       
    
  
   
   

Parameter constraints:

• model: speech-2.8-hd, speech-2.8-turbo, speech-2.6-hd, speech-2.6-turbo, speech-02-hd, speech-02-turbo, speech-01-hd, or speech-01-turbo.
• text: fewer than 10,000 characters.
• voice_setting.speed: 0.5–2; vol: greater than 0 and at most 10; pitch: -12–12.
• audio_setting.sample_rate: 8000, 16000, 22050, 24000, 32000, or 44100.
• audio_setting.bitrate: 32000, 64000, 128000, or 256000; it applies only to MP3.
• audio_setting.format: mp3, pcm, flac, wav, pcmu_raw, pcmu_wav, or opus.
• audio_setting.channel: 1 or 2.
• voice_modify.pitch, intensity, and timbre: -100–100. sound_effects may be spacious_echo, auditorium_echo, lofi_telephone, or robotic.
• pronunciation_dict.tone: each item uses original/replacement, where the replacement may contain text, parenthesized numbered pinyin, IPA, or Japanese kana.
• timbre_weights: at most four entries, each with a voice_id and integer weight from 1 to 100.

Confirm API success only when the HTTP request succeeds, base_resp.status_code is 0, data is not null, and data.status is 2. With output_format: "url", data.audio is a temporary audio URL that expires after 24 hours.

Download And Present

Immediately download data.audio with a second http_request. Use a concise, collision-resistant workspace filename under generated/speech/ and an extension matching audio_setting.format.

{
  "method": "GET",
  "url": "<data.audio URL from the generation response>",
  "save_to": "generated/speech/<descriptive-name>-<timestamp>.mp3",
  "timeout_ms": 300000,
  "max_response_bytes": 67108864
}

After the download succeeds, call present_artifact with the saved workspace path. Report the model, voice ID or voice mix, output format, and file path. You may report duration, sample rate, bitrate, file size, channel count, and usage only when they are present in extra_info or verified from the saved file.

If the user requests subtitles, set subtitle_enable: true and choose subtitle_type as sentence or word. When data.subtitle_file is returned, download it under generated/speech/ with a matching base filename and .json extension, then present both artifacts. word_streaming is only valid for streaming requests.

If the audio URL redirects, allow same-origin redirects. If the API returns a URL on another public HTTPS origin, make the second request directly to that URL. Never expose temporary download URLs after saving the artifacts locally.

Errors And Retries

• 1000, 1024, or 1033: transient server error. Retry once after a short delay.
• 1001: timeout. Do not automatically retry because synthesis may have completed; explain the uncertainty and ask before retrying.
• 1002: rate limited. Retry at most twice with a delay.
• 1004 or 2049: authentication failed. Do not retry; ask the user to verify the configured API key.
• 1008: insufficient balance. Do not retry; ask the user to check the account balance.
• 1026 or 1027: sensitive input or output. Do not retry unchanged; ask the user to revise the text or voice request.
• 1039: TPM limit. Reduce or split the text, or wait before retrying.
• 1042: invisible or invalid characters exceed 10%. Ask the user to clean the text before retrying.
• 2013: invalid parameters. Fix only clear schema violations, then retry once.
• 20132: invalid voice ID. Ask the user to choose another authorized system, designed, or cloned voice.
• 2042: no access to the voice ID. Do not substitute another voice silently; ask the user to choose an accessible voice.
• 2056: Token Plan resource limit. Do not retry immediately; explain that the user must wait for resources to reset.

Do not report success if synthesis completed but the audio download failed. State that synthesis completed but local saving failed, and offer one download retry while the 24-hour URL remains valid.