# Voice > Text-to-Speech (TTS), voice cloning, voiceover, narration placement/sync, and custom sound effects (SFX) generator. Use when the user wants generated speech from text, wants to clone a consented voice from uploaded reference audio, wants to correct a misspoken word or short phrase in recorded speech, wants to add/replace/align narration or voiceover for an existing video/timeline, wants to keep existing voiceover synced after visual retiming edits, needs voice audition/selection, or explicitly wants a newly generated/custom sound effect that is not available in the Sound Effects library. - Skill: `chatcut-inc/voice` (Agent Skill, multi-file: 3 files) - Install (CLI): `npx skillmds@latest add chatcut-inc/voice` - Raw SKILL.md: https://api.skillmd.com/api/skills/chatcut-inc/voice/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Docs & Writing - Author: chatcut-inc (https://skillmd.com/u/chatcut-inc) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/chatcut-inc/voice --- # Voice & Sound Effects Generator Generate voiceovers (TTS) and sound effects. For TTS, choose a concrete provider and voice before calling `submit_voice`. ## When to Use - Generate voiceover/narration from text - Create text-to-speech audio for videos - Add, replace, or redo narration/voiceover for an existing video, timeline, screen recording, slide animation, product demo, B-roll edit, MG explainer, or other visual sequence - Keep existing narration/voiceover aligned after trimming, speeding up, slowing down, moving, reordering, or replacing the visuals it describes - Offer and audition TTS voice choices when the user has not picked a concrete voice - Clone the user's own or explicitly authorized voice from reference audio - Correct a real misspoken word or short phrase with the authorized speaker's cloned voice while preserving picture and downstream timing - Generate custom sound effects from text descriptions only after checking the Sound Effects library first ## TTS (Text-to-Speech) If the user wants to correct a word or short phrase that was actually spoken incorrectly in existing recorded speech, read [references/fix-spoken-mistakes.md](references/fix-spoken-mistakes.md) before editing or generating. That workflow preserves the picture and protects later timing while replacing only the faulty sound. Do not use synthesized speech when the recording is already correct and only its transcript is wrong; fix the transcript instead. Use the ordinary narration path for a full rewrite or complete new voiceover. If the current request has an existing visual target and the user wants narration, voiceover, dubbing, or replacement speech for that target, read [references/video-sync.md](references/video-sync.md) before drafting new narration, using existing narration text to generate TTS, or placing audio. Do this even when the user did not explicitly say "sync" or "match the visuals"; the existence of a visual target means narration timing and meaning may need to follow on-screen content. Use the normal standalone TTS path only when there is no visual target or the user just wants an audio asset from text. Also read [references/video-sync.md](references/video-sync.md) when the timeline already has narration/voiceover and the user asks to change the visuals while keeping that voiceover aligned. This is a sync maintenance task even if no new TTS is needed. Use `manage_voice` as the single catalog and management entry, and `submit_voice` for final TTS. `manage_voice action="list" voiceType="all"` returns official and cloned candidates in one normalized list. Only `voiceType="custom"` supports create-access, apply, clone, preview, rename, or delete actions. The current contracts are: - `provider` is required. Use `doubao` for Chinese-optimized narration and `elevenlabs` for English or multilingual narration, or `fish-audio` for a ready ChatCut custom voice. - `voiceId` is required and provider-specific. Do not mix catalogs. - `submit_voice` creates an audio asset only. Timeline placement, replacement, trimming, and alignment happen later with timeline tools. - For long narration, multiple `submit_voice` calls can be useful: split at natural pauses, sentence groups, or script beat boundaries when the workflow benefits from separately timed or placed voice clips, such as storyboard beats, scene-level ad segments, or a user request for separate assets. - For Doubao, `speedRatio`, `loudnessRatio`, `pitch`, `emotion`, `emotionScale`, `performancePrompt`, and `explicitDialect` are supported knobs, but not every voice supports every expressive control. Use the selected official entry returned by `manage_voice action="list"` as the authority. - For ElevenLabs, `modelId`, `speed`, and `stability` are the supported voice knobs. For `eleven_v3`, inline audio tags are available for expressive delivery such as emotion, tone, nonverbal cues, accent hints, pauses, or local pacing. - For `fish-audio`, pass the ready voice's ChatCut `customVoiceId` as `voiceId`. `submit_voice` performs the authoritative Pro/readiness check, creates a generation job, and consumes standard TTS credits after success. Never pass or request the provider's internal Fish model id. The current Fish S2.1 model supports inline square-bracket cues in `text` for local emotion, delivery, and paralinguistic control. ### Keep voice providers private Doubao, ElevenLabs, Fish Audio, their model names, and other provider identity are internal implementation details. Never expose or attribute them in user-facing replies, progress updates, voice recommendations, audition cards, clone instructions, success summaries, or errors. Use ChatCut product language instead: - Call curated catalog voices `official voices` / `官方音色`. - Call saved custom voices `cloned voices` / `克隆音色`, `My Voices` / `我的音色`, or use the voice's user-visible saved name. - Describe status and failures at the ChatCut feature level. If a tool or provider error contains a provider name, model name, provider voice id, or provider URL, preserve the actionable meaning but remove those details before replying. Provider names and provider-specific ids remain valid only in internal tool arguments, tool-result interpretation, and these implementation instructions. Do not copy them from tool output into visible UI metadata or prose. Official voice controls come from `manage_voice action="list"`: - Call it for the target narration language and the user's visible locale. Treat each returned `(provider, voiceId, name, summary, sampleUrl, capabilities)` tuple as atomic. - Use only fields in that entry's `capabilities.supportedControls`; never infer capability support from a remembered voice name or family. - Controls are not guarantees of a specific acting style. Use the returned tags and sample to pick a naturally suitable voice, then use supported controls for moderate delivery changes. - For entries that advertise `audioTags`, inline audio tags are available when the user asks for expressive delivery such as emotion, tone, nonverbal cues, accent hints, or local pacing. Official examples fit these useful TTS categories: - Emotion/tone tags include `[happy]`, `[sad]`, `[angry]`, `[excited]`, `[curious]`, `[sarcastic]`, `[crying]`, `[annoyed]`, `[appalled]`, `[thoughtful]`, `[surprised]`, and `[mischievously]`; vocal delivery and nonverbal cue tags such as `[whispers]`, `[laughs]`, `[sighs]`, `[exhales]`, `[inhales deeply]`, `[clears throat]`, `[snorts]`, `[swallows]`, `[wheezing]`, and `[coughs]`; pacing/pause/local speed tags such as `[slowly]`, `[pause]`, `[short pause]`, `[long pause]`, `[rushed]`, and `[drawn out]`; and accent/special-performance tags such as `[strong X accent]`, for example `[strong French accent]`, plus `[sings]`, `[singing]`, `[woo]`, and `[pirate voice]`. Official examples are non-exhaustive; similar auditory tags can be tried when the user explicitly asks for that delivery and the tag describes how the voice should sound, not a visual action. Write tags directly in `text`, close to the short phrase they should affect. Treat tags as local guidance, not paragraph-wide controls. - For pauses and pacing, use punctuation, text structure, shorter generated segments, or local audio tags such as `[short pause]` and `[slowly]` when needed. Fish Audio control support for cloned voices: - The current `fish-audio` route uses Fish S2.1. Put concise natural-language cues in square brackets directly in `submit_voice.text`, for example `[happy]`, `[calm]`, `[angry]`, `[excited]`, `[whisper]`, `[laugh]`, `[sigh]`, `[gasp]`, `[pause]`, `[emphasis]`, `[inhale]`, or `[exhale]`. S2.1 is not limited to a fixed tag list, so a specific auditory description such as `[whispers sweetly]` or `[laughing nervously]` is also valid. - Place a cue immediately before the phrase or moment it should affect. Fish S2.1 accepts cues anywhere in the text, so multiple short cues can create local transitions, for example `[calm] 先别着急。[excited] 好消息是，我们已经找到解决办法了！` or `I thought it was over [gasp] but then the lights came back [relieved].` - Use cues sparingly and only when the requested delivery benefits from them. Prefer one clear instruction at a transition over stacking conflicting directions. Treat the result as model guidance rather than a deterministic editing boundary, and split into separate `submit_voice` calls when exact clip-level timing or independent retries matter. - Do not use Fish S1's legacy `(parenthesis)` emotion syntax on this route, and do not add a separate `emotion` argument: the S2.1 cue belongs inside `text`. Keep the default voice-cloning preview line untagged. Do not add cues to a custom preview on the user's behalf, but preserve cues the user intentionally includes within the 100-character preview limit. ```ts // English / multilingual via ElevenLabs mcp__skill__submit_voice({ provider: "elevenlabs", text: "Hello world", voiceId: "peter", }); // Chinese via Doubao mcp__skill__submit_voice({ provider: "doubao", text: "你好世界", voiceId: "liuchang", }); // With speed adjustment (Doubao only) mcp__skill__submit_voice({ provider: "doubao", text: "这是一段稍快的中文旁白。", voiceId: "liuchang", speedRatio: 1.5, }); // With expressive Doubao controls mcp__skill__submit_voice({ provider: "doubao", text: "这次事故提醒我们，安全永远不能侥幸。", voiceId: "liuchang", emotion: "sad", emotionScale: 3, performancePrompt: "痛心但克制，语速稍慢，像新闻专题旁白", pitch: -1, speedRatio: 0.92, }); // With ElevenLabs delivery controls mcp__skill__submit_voice({ provider: "elevenlabs", text: "The launch changed how teams plan their daily work.", voiceId: "peter", speed: 0.95, stability: 0.4, }); // With local Fish Audio S2.1 delivery cues on a ready cloned voice mcp__skill__submit_voice({ provider: "fish-audio", voiceId: "", text: "[calm] 先别着急。[excited] 好消息是，我们已经找到解决办法了！", name: "Expressive custom voiceover", }); ``` ## Voice Audition Before Generation ### Emit the native clone entry only as a final action `` is an executable editor action, not prose, code, or an internal process label. Never quote it, wrap it in backticks, describe it as the next step, or emit it in a progress update, pre-tool explanation, plan, or other intermediate assistant message. Finish every required inspection and tool call first. If the native dialog is still the correct route afterward, follow the **dialog-entry sequence** under **Native ChatCut editor** below. That sequence must be the final user-facing assistant message for the run: do not call another tool, add anything after its completion reminder, or emit the tag again. A single Agent run may render at most one standalone native clone entry. ### Route cloning by host and available reference Decide the host path before loading `widget-forms` or asking for clone inputs: - In the native ChatCut editor, first check whether the user has already supplied a readable audio attachment or explicitly identified an accessible audio-bearing ChatCut asset for this cloning request, including a timeline audio or video item. If so, do not make the user choose the same source again and do not emit ``. Resolve or derive its audio asset, run the creation preflight, collect only the missing name, preview text, and explicit authorization, then use the Agent-driven cloning flow below. - In the native ChatCut editor, use the editor dialog only when a usable reference has not already been supplied. Follow the native dialog path under **Custom Voice Cloning** below. - In external Codex / Claude hosts, never emit ``; those hosts do not render or dispatch the native editor action. Use the Agent-driven attachment flow below. An arbitrary voice already present in the project is not consent or a cloning reference. Use the direct path only when the user supplied or identified the audio for the current cloning request and later gives the full authorization required below. When the user explicitly chooses an audio-bearing timeline item, resolve it and its source range with `preview_timeline`. Reuse a 10-second-to-3-minute audio asset directly. For video, `pull_asset`, extract the chosen range as supported audio with ffmpeg, then load `asset-import` and `push_asset` the result. For any source over 3 minutes, use a clean 30–60-second excerpt; under 10 seconds, ask for a longer reference. Continue with the resulting audio asset id without emitting ``; the source choice is not authorization. ### Choose the interaction from live state Treat the unified voice lookup as a mandatory gate. Whenever the user requests TTS without naming a concrete official or custom voice, and has not already explicitly chosen voice cloning: 1. If `manage_voice` is not already loaded, use `ToolSearch` to load it. 2. Call `manage_voice action="list" voiceType="all"` with the target narration language, conversation locale, and any useful official-voice filters. 3. Use the returned normalized `voices` list as the only candidate directory. It already puts cloned voices before matching official voices. Do this before recommending or rendering any voice-selection UI. Never infer the user's saved or official voices from chat history or a static Skill file. An explicit request to clone a voice is already a concrete source choice. Do not call the combined list merely to choose between official and cloned voices in that case. First resolve whether the current request already supplies a usable reference; perform `manage_voice voiceType="custom" action="check-create-access"`, then follow the selected host route. The standalone native entry may appear only after that work is complete, under the final-action discipline above. The Agent may infer useful tone, mood, delivery, or use-case suggestions from the narration text. Treat these as recommendation signals, not as the user's choice of voice source. A reasonable inference must never exclude a ready, playable custom voice from the combined audition surface below. Classify the request before rendering anything: - **Concrete custom voice:** when the user names a ready custom voice or chooses the only named custom-voice pill, use that exact custom voice. When the user chooses `Choose my cloned voice` and several are ready, show only those ready custom voices as playable choices before continuing. - **Concrete official preset:** use or confirm that exact preset; do not reopen the source-choice branch. - **Clone action selected:** only now enter the host-specific cloning route above in the very next reply. Do not wait for the user to ask again, tell them to open a menu or panel, or leave the choice as an unhandled pill. In the native editor, finish any required inspection or preflight before the dialog entry; in external Codex / Claude hosts, begin the attachment flow. - **At least one ready custom voice, but no concrete voice named:** render one combined playable audition surface. Put ready custom voices that have a real `previewUrl` first, add 2-4 suitable official voices with playable samples, and finish with `Clone another voice`. Do not ask a text-only saved-versus- official source question and do not use ``. - **No ready custom voice and no voice preference:** infer a small, varied set of 2-4 generally suitable official voices, render them as playable cards, and finish with `Clone my voice`. Do not use text-only source choices. - **No ready custom voice and voice requirements available:** use explicit requirements such as "middle-aged male", "warm female", or "professional" first; otherwise reasonable traits inferred from the narration may guide the recommendation. Show 2-4 matching official playable cards and one clone action card in the same selection surface. Do not append a standalone `` button to this reply. Localize the branch labels and adjust them to live state. Use these meanings: - Chinese: - Named custom: `使用「」` - Custom list: `选择我的克隆音色` - Curated catalog: `选择官方音色` - First clone: `克隆我的音色` - Additional clone: `克隆新音色` - English: - Named custom: `Use “”` - Custom list: `Choose my cloned voice` - Curated catalog: `Choose an official voice` - First clone: `Clone my voice` - Additional clone: `Clone another voice` - Spanish: - Named custom: `Usar «»` - Custom list: `Elegir mi voz clonada` - Curated catalog: `Elegir una voz oficial` - First clone: `Clonar mi voz` - Additional clone: `Clonar otra voz` Native Chinese example when no usable reference has been supplied: ```text ``` When no usable reference has been supplied, the dialog action belongs inside the playable grid: ```html ``` Always expose one appropriate path to cloning during ordinary voice selection, but never show both a clone action card and the standalone native `` entry in the same reply. Provider availability, plan, and quota govern what happens after the user chooses cloning, not whether the choice is visible. Offering the choice does not require consent; explicit permission and a supported reference are required only before the clone tool call. A scenario reference may intentionally use a narrower audition without the clone action and explain its direct-from-project fallback in prose. Before recommending, rendering, or submitting a TTS voice option, use the current `manage_voice action="list" voiceType="all"` result. It is the live catalog shared with ChatCut Web, Desktop, and published plugins. Do not create voice options from memory, translated names, filenames, or broad descriptions. First determine two separate languages: - User conversation language: the language the user used to talk to you. Use this for surrounding copy, option names, and summaries. - Target narration language: the language of the text being synthesized. Use this only to choose provider and voice catalog. Load `widget-forms` before collecting input or rendering a choice. That skill owns the current host's form, attachment, and media-card behavior. This skill owns the voice candidates, required fields, safety rules, and the asset ids passed to voice tools. Do not embed host-specific UI instructions here. "help me generate ... voice over in Chinese" is an English conversation asking for Chinese narration, so the audition widget copy stays in English while the voice candidates come from Doubao. For an official audition: 1. Call `manage_voice action="list" voiceType="all"` with the target narration `language`, user conversation `locale`, and any explicit gender, age, tone, or use-case requirements. If none were explicit, a concise inferred tone/use-case query may guide the official shortlist. Present inferred traits as a suggestion, not as a stated user preference. If nothing official matches, broaden only optional filters and clearly describe the closest supported choices; never drop returned playable custom voices because they lack official catalog tags. 2. Use returned ready custom voices with previews first, followed by 2-4 returned official voices. 3. Load `widget-forms` and request one required `playable_single_choice`. Give every official option the `voiceId`, localized `name`, `summary`, and matching `sampleUrl` from the same returned tuple. Pass `sampleUrl` verbatim; never prepend an inferred S3, CDN, editor, localhost, or production base URL, and never reconstruct it from the filename pattern. This differs from a custom voice's `previewUrl`, which must be used exactly as returned by `manage_voice`. 4. Always add one no-media action option with stable value `clone_voice` as the final card on every ordinary recommendation/selection surface. Label it `Clone my voice` when no ready custom voice exists, or `Clone another voice` when one does; localize it using the meanings above. In native ChatCut this is a compact `` without `media`, not a separate button. In external hosts it is the equivalent label-only option. A scenario-specific reference may explicitly replace this ordinary surface with a narrower one. 5. Wait for the user to choose. If the answer maps to `clone_voice`, render the host-specific cloning entry/workflow on the next turn; do not start cloning from the audition reply itself. 6. For an official voice, call `submit_voice` with the selected tuple's `provider` and `voiceId` verbatim. 7. For an existing custom voice, call `manage_voice voiceType="custom" action="apply"` with its full mapped `customVoiceId`. When final speech is requested, pass that same id to `submit_voice` as `voiceId` with `provider: "fish-audio"`. For a custom-voice-only audition, include every relevant `ready` custom voice that has a `previewUrl`. Use the full `customVoiceId` as its stable value, the stored name as its display label, `previewText` as its summary when present, and the exact tool-returned `previewUrl` as audio media. Do not copy, download, rewrite, validate by hostname, or invent that URL. If a ready voice lacks a preview, omit it from the audition surface rather than making an unplayable text-only card. Keep every option's type, submission id, display label, preview, summary, and capabilities tied to the same `manage_voice` tuple. The target narration language filters official entries; the conversation language controls all visible copy. Keep the label-to-tuple map in context so a host that returns visible labels can still map the answer without another confirmation. ## Custom Voice Cloning Voice cloning is a separate consented flow. Proactively offering it during voice selection is required and is not the same as starting a clone. Never clone a third party's voice merely because a clip is present in the project. ### Native ChatCut editor When the user has not already supplied a usable reference audio attachment or ChatCut audio asset for this cloning request, delegate creation to the existing editor dialog and follow the **dialog-entry sequence** below. Do not first ask for the voice name, language, reference upload, or consent in an Agent widget. The dialog owns fresh entitlement and slot checks, recording/upload, authorization, durable source storage, Fish Audio registration, preview, and retry. When the user has already supplied a usable reference for this cloning request, do not send them back through the dialog and do not ask them to reselect the file. Follow **Agent-driven cloning from an available reference** below. After the creation preflight succeeds, collect only missing fields: explicit authorization, voice name, and preview text. Then call `manage_voice voiceType="custom" action="clone"` with the resolved ChatCut audio asset id. For the dialog path, the Agent owns presenting the entry. Immediately after the user chooses the clone branch: 1. Send one short, natural sentence that tells the user they can click the button below to start cloning. 2. Render exactly `` on its own line. 3. Add one short, localized sentence asking the user to send a message when cloning is complete so the Agent can continue the request. Adapt the instruction and reminder to the conversation and language. This three-part sequence must be the final assistant message for the run after all required tools have finished; never place it in a pre-tool or intermediate message. Examples: - Chinese: `可以点击下方按钮开始克隆你的音色啦。\n\n克隆完成后告诉我一声，我再继续。` - English: `Click the button below to start cloning your voice.\n\nLet me know when cloning is complete, and I'll continue.` - Spanish: `Haz clic en el botón de abajo para empezar a clonar tu voz.\n\nAvísame cuando termine la clonación y continuaré.` These are examples, not fixed copy. Do not say “follow these steps” or imply that the Agent will collect clone inputs. Do not redirect the user to an editor menu to find cloning themselves. After sending the entry and reminder, stop and wait for the user to report completion or send the draft created by the dialog's Apply action. When the user clicks Apply, the editor inserts both the cloned-voice attachment and the localized equivalent of `Continue generating with this voice.` into the prompt draft. Wait for the user to send that draft. The attached hidden voice context contains the exact custom voice id; continue the existing request with `submit_voice provider="fish-audio"` when final speech is actually requested. Do not emit raw `