| name | widget-forms |
| description | Use when the agent should ask the user for structured input with an in-chat form, including single-select, multi-select, text fields, style pickers, or voice audition choices. |
Widget Forms
Use the form tool instead of hand-writing markup: the editor chat renders the
form as an interactive card and returns the user's structured answer.
Runtime Rule
Call ask_followup_questions. It serializes your fields into the editor's
native form card; the user's submission comes back as their next message.
Plan the whole questionnaire before calling the tool. Send one final form, not a
trial form followed by a corrected form. The tool supports at most 12 fields; if
the user asks for more questions, merge related prompts into combined fields
before the first call.
After calling ask_followup_questions, stop the turn and wait for the submitted
answer to appear in chat. Do not apply a choice, create assets, or continue
planning from a recommendation until the user's selection is present in the
conversation.
Supported Field Mapping
Build a fields array. Write every visible string in the user's conversation
language.
- Native
<form-single> -> { type: "single", variant: "default" }
- Native
<form-multi> -> { type: "multi", variant: "default" }
- Native
<form-text> / <form-textarea> -> { type: "text" }
- Native
<form-visual> -> { type: "single", variant: "visual" }
- Voice audition cards ->
{ type: "single", variant: "voice" }
- Native start-scenario cards ->
{ type: "single", variant: "scenario" }
Form Copy Tone
For form-level text (title, prompt, fields[].label, submitLabel, and
messagePrefix), write like OpenChatCut is a capable video-making partner inviting
the user to describe what they want, not like a rigid survey.
Aim for:
- Warm, open-ended, and action-oriented. The copy should imply "choose the
closest video need or just tell me your idea; we can figure it out together."
- Short and scannable. Use one natural sentence for
prompt and concise
question labels.
- Honest capability framing. OpenChatCut can help with many video workflows, but do
not claim unsupported abilities or guarantee a result before inputs are known.
- The user's language and local product terms. Keep "OpenChatCut", "B-roll",
"Motion Graphics", "MG 动画", model/product names, and platform names in their
established forms.
- User-facing creative wording. For early planning or creative-intake forms,
prefer natural terms such as idea, direction, plan, story, shot list, audience,
mood, or video need over internal production-document language.
Avoid stiff labels such as "Select video type", "Please choose the video type
for this project", or "What type of video do you want to make?" for scenario
intake unless the host has no room for warmer copy.
For a scenario-intake form, prefer copy like:
{
"title": "What do you want to make?",
"prompt": "Choose the closest video scenario, or choose Something else and describe your idea.",
"submitLabel": "Start creating",
"messagePrefix": "I want to start with this video direction:",
"fields": [
{
"id": "scenario",
"label": "Which scenario fits your video best?",
"type": "single",
"variant": "scenario",
"otherPlaceholder": "For example: turn my travel footage into an atmospheric vlog / make a launch video for a new product"
}
]
}
Do not include file-upload questions in forms. If a task actually needs
source media and the project/chat does not already have it, ask the user
separately to upload files in the editor (drag & drop or the upload button, or
paste into the chat composer). File upload is not a default prerequisite for every
questionnaire; only ask for it when the next editing step depends on missing
media.
For choice fields:
- Use
id for the internal value the next tool call needs.
- Use
label for what the user sees.
- For ordinary single-select and multi-select cards (
variant: "default"), keep
options label-only. Do not add per-option description unless the user cannot
distinguish the choices from labels alone.
- Use
description mainly for voice cards. Visual style cards should usually
use only preview + label.
- When an off-list answer is acceptable, add an explicit option with
id: "__other__" and a label in the same language as the rest of the form,
using the word the user would expect for an off-list answer. The widget will
turn this option into a text entry when selected. Use otherPlaceholder if
the text entry needs a placeholder.
For visual cards:
- Use real image URLs or data image URLs in
preview.
- For Design Style catalog choices, call
manage_design_style with
action: "list" first, then map each returned preset to
{ id: preset.presetId, label: preset.name } (no thumbnails in this build).
- Never hardcode catalog preset ids unless the user already selected one.
For voice cards:
- Use
audioUrl for the sample file.
- Prefer the documented sample path such as
/voice-samples/doubao-liuchang.mp3
or a public HTTPS URL. Do not pass localhost sample URLs; MCP host iframes do
not reliably resolve editor-local media.
- Keep user-visible descriptions provider-neutral. Describe the voice the same
way the native OpenChatCut audition UI does: gender / age range / tone / use case,
such as
Female / young / friendly, general or 男 / 中年 / 低沉知识解说.
Do not show provider names like ElevenLabs or Doubao in option descriptions.
- Keep the option
id equal to the provider voice id needed by submit_voice.
For native start-scenario cards:
- Use this when the user should choose which OpenChatCut video workflow to start,
such as talking-head editing, MG animation, long-video-to-shorts,
product/app promo, AI short film, or explainer video.
- Present these as common video needs/scenarios, not as the only possible video
workflows. The form must also let the user describe a different video need.
- Use exactly one single-select field with
variant: "scenario".
- Provide options using the canonical ids below and localized labels in the
user's language. Include
id: "__other__" only when you need to customize the
off-list label; otherwise the backend appends a localized Other option.
- English, Chinese, and Spanish scenario labels/descriptions/starter prompts are
built in. For any other user language, faithfully translate each scenario's
English
label, description, and starter prompt into the user's language
and pass those localized values in the option objects. Preserve OpenChatCut
product terms and workflow meaning; do not add new requirements. Use
submitPrompt for the translated starter prompt. This override is specific to
variant: "scenario"; ordinary option cards, voice cards, and visual style
cards already get their visible text from the values you pass.
- Do not provide custom
preview or audioUrl; the backend fills the native
first-screen preview image.
- Canonical ids:
talking-head, motion-graphics, long-video-to-shorts,
app-promo, ai-cinematic-short-film, explainer, plus __other__ for a
free-form video need.
- Example options:
{ "id": "talking-head", "label": "Talking Head Editing" },
{ "id": "motion-graphics", "label": "Motion Graphics" },
{ "id": "long-video-to-shorts", "label": "Long Video to Shorts" },
{ "id": "app-promo", "label": "Product / App Promo" },
{ "id": "ai-cinematic-short-film", "label": "AI Short Film" },
{ "id": "explainer", "label": "Explainer Video" },
{ "id": "__other__", "label": "Something else" }.
Current Gaps
ask_followup_questions is for structured answers only. It does not support native
custom HTML, timeline parameter bridges, editor item selection, or file upload
fields. For files already held by the agent runtime or attached directly to the
chat outside this card, the media-import workflow is still valid: call
import_media and run the helper/direct upload path. For files the user wants
to place directly in a project, ask them to use the OpenChatCut editor upload UI.
Example
{
"title": "Your video idea",
"prompt": "Choose or fill in what you have in mind so OpenChatCut can pick a good starting direction.",
"submitLabel": "Send idea",
"messagePrefix": "Continue with this video direction:",
"fields": [
{
"id": "goal",
"label": "What's the main goal of this video?",
"type": "single",
"options": [
{ "id": "product_intro", "label": "Product intro" },
{ "id": "social_ad", "label": "Social ad" },