语构 App Builder

Dev Tools

Build full-stack web applications using 语构's chat-driven development platform. Manages conversations, sends development instructions, monitors build progress, extracts results (generated files, summaries, task status), publishes applications, and manages versions.

Install

openclaw skills install yugoo-app-builder

Installation

Prerequisites

Before using this skill, ensure you have the CREO4U_SKILL_API_KEY environment variable set.

Setup API Key

Option 1: Provide API Key during installation

export CREO4U_SKILL_API_KEY="your_api_key_here"

Option 2: If not provided, the skill will prompt for it

If CREO4U_SKILL_API_KEY is already set in your environment, the skill will use it directly
If not set, the skill will ask you to provide the API key

After Installation

Once installed, all CLI commands will automatically use the CREO4U_SKILL_API_KEY environment variable — no need to pass --token or any API key parameter.

语构 App Builder

语构 is a chat-driven full-stack application builder. Users describe what they want in natural language and 语构 generates a production-ready web application, including frontend UI, backend services, database schema, and a live development environment.

This skill enables AI agents to interact with the 语构 platform to create, iterate, publish, and deploy applications.

All platform operations must be executed through the CLI script:

python scripts/yugoo_cli.py [global options] <command> [command options]

IMPORTANT: Argument Order — Global options (--token, --base-url, --insecure, --timeout) must appear BEFORE the subcommand. Placing them after the subcommand will cause a parse error.

# ✅ Correct — global options before subcommand
python scripts/yugoo_cli.py --token TOKEN create --name "My App"

# ❌ Wrong — global options after subcommand
python scripts/yugoo_cli.py create --token TOKEN --name "My App"

Note: The --insecure flag disables TLS certificate verification. Only use it in controlled test environments — never for production or when transmitting real API keys.

Do not call platform APIs directly. Always use the CLI commands provided by this skill.

When to Use This Skill

Use this skill whenever the user wants to:

create a website or web application
build a dashboard or admin panel
create a SaaS product or internal tool
build a full-stack application with frontend + backend
build a landing page
create a browser game or mini game
iterate on an existing 语构 project
publish or deploy an 语构 application
check sandbox health or preview URLs
manage application versions
copy an existing application (own or from market)
clone an app from the app market
switch between application versions
delete or finalize a version

Do not use this skill for unrelated programming tasks.

Routing Keywords

Trigger this skill if the request includes concepts such as:

build a website
create a webpage
build a web app
create a SaaS
build a dashboard
create an admin panel
build an internal tool
create a landing page
build a browser game
create a mini game
generate a web product
make a snake game webpage
build a todo web app
create a blog site
publish this app
deploy this application
copy this app
clone an app from market
browse app market
switch to version
list versions
delete version
finalize version

Example Requests

Examples that should route to this skill:

"Create a todo list web app"
"Build a personal blog website"
"Make a dashboard for sales analytics"
"Create a SaaS landing page"
"Build an admin panel"
"Write a snake game webpage"
"Create a browser game"
"Build a mini web game"
"Modify my 语构 project"
"Publish this 语构 app"
"Deploy my application"

Application Development Description Guidelines

✅ DO: Simple, Focused Requests

For New Applications

Describe the core functionality in 1-2 sentences:

"Build a todo app where users can add tasks, mark them complete, and delete them"
"Create a dashboard to display sales data with charts and filters"
"Build a landing page for a SaaS product with pricing section and contact form"

For Bug Fixes or Optimizations (1-2 changes per request)

✅ Correct - Single Focus:

"Fix the submit button not responding on the contact form"
"Optimize the loading speed of the data table"
"Add error handling for invalid email input"
"Fix the date picker not showing correct format"

✅ Correct - Two Related Changes:

"Fix the login button styling and add a loading indicator"
"Optimize the database query and add caching for faster response"
"Fix the mobile layout and adjust the navigation menu"

❌ WRONG - Too Complex (DO NOT use):

"Fix the login button, optimize the database, add user authentication, redesign the homepage, and deploy to production"

⚠️ IMPORTANT: Complexity Limits

When sending messages to the chat API:

Request Type	Max Items
Bug fixes	1-2 related bugs
Feature additions	1-2 related features
Optimizations	1-2 related optimizations
UI changes	1-2 related components

Rationale: 语构 platform works best with focused, incremental changes. Complex multi-part requests may result in incomplete implementation or unexpected behavior.

Iterative Development Pattern

For complex requirements, break them into multiple chat messages:

# Round 1: Build basic structure
chat -c $CID -m "Build a todo app with add and list features" --watch

# Round 2: Add one feature
chat -c $CID -m "Add delete functionality to todo items" --watch

# Round 3: Add another feature
chat -c $CID -m "Add edit functionality and local storage" --watch

# Round 4: Polish
chat -c $CID -m "Improve the UI styling and add animations" --watch

How to Describe Application Requirements

✅ Do: Keep It Simple

Describe what the application should do in one or two sentences:

"Build a todo app where users can add tasks, mark them complete, and delete them"
"Create a dashboard to display sales data with charts and filters"

❌ Don't: Over-Specify

Avoid:

Technology stack (e.g., "use React", "use FastAPI")
Performance requirements (e.g., "handle 1000 concurrent users")
Architecture constraints (e.g., "use microservices")
Detailed feature lists

For iterative modifications, keep requests brief — only describe the change needed, not the full application again.

For bug fixes or optimizations, limit to 1-2 related changes per request. See Application Development Description Guidelines for details.

The platform handles technical decisions automatically.

Model Selection

The chat command accepts an optional --model-choice parameter that selects which model the Task agent uses for this message. The Pilot agent always uses the platform default and is not affected by this flag.

Accepted values

Value	Meaning
(omitted) or `auto`	Smart routing — platform picks the best model
`economy`	Preset: cheaper / faster models
`advance`	Preset: balanced cost vs. capability
`expert`	Preset: highest-capability models
`<model-id>`	A concrete model id from `python scripts/yugoo_cli.py models` (e.g. `claude-sonnet-4-6`)

Format constraint: ^[A-Za-z0-9._\-]+$, max length 80.

Typical usage

# Discover available choices
python scripts/yugoo_cli.py models

# Pick a preset
python scripts/yugoo_cli.py chat -c $CID -m "Build a SaaS landing page" --model-choice expert --watch

# Pin a concrete model id
python scripts/yugoo_cli.py chat -c $CID -m "Add e2e tests" --model-choice claude-sonnet-4-6 --watch

When to set it explicitly

The user asks for a specific model ("use Sonnet", "switch to the cheaper model").
You're running a high-stakes / complex change and want the expert preset.
You're doing many trivial iterations and want the economy preset to save credits.

For most cases, leave it unset (smart routing).

Stateless Execution Model

The CLI script is stateless. It does not store workflow state between calls.

Application workflow state is maintained by the 语构 platform and must be tracked via:

conversation_id — the unique session identifier
message_id — identifies a specific message/generation run

Agents must pass the appropriate identifiers when continuing conversations or checking results.

Application Lifecycle

语构 applications follow a standard lifecycle:

1. Initial Creation

For a new application:

Start with a chat request describing the product
The platform generates the application automatically
Application is available in the development environment

2. Multi-Round Modification

After an application has been created:

Continue using chat with the same conversation_id
Chat messages modify the existing application
No additional generation step required

3. Publishing

Publishing deploys the application to production:

Use publish command to trigger deployment
Use publish --wait to auto-poll until deployment completes
After successful publish, the app is live at the preview URL

Application URLs

语构 provides URLs during the lifecycle:

Development/Preview URL

After the application is created, access it at:

https://preview-{conversation_id}.creo4u.com/

This URL is for:

viewing the application
testing features
development iteration

Production URL

After publishing succeeds, the application is accessible at:

https://preview-{conversation_id}.creo4u.com/

This is the public production URL of the deployed application.

Share this URL only after publishing completes successfully.

Standard Workflow

Create New Application

create → chat --watch → publish --wait → urls

Iterate on Existing Application

chat --watch → result → chat --watch → result → ...

Publish Application

publish --wait → urls

Copy Own Application

copy → chat --watch → result → publish --wait

Clone from App Market

market-list → clone-market → chat --watch → result → publish --wait

Version Management

versions → restore-version → chat --watch → finalize-version

Build with Attachments

upload --file → chat --attachment OSS_PATH --watch → publish --wait → urls

Build from Local File

chat --file /path/to/requirements.txt --watch → result → publish --wait → urls

Complete Workflow Example

# Step 1: Create a conversation
CONV=$(python scripts/yugoo_cli.py create --name "Todo App")
CID=$(echo $CONV | python -c "import sys,json; print(json.load(sys.stdin)['conversation_id'])")

# Step 2: Send development instructions and watch progress
# The poll_completed snapshot contains cost/time in assistant messages
python scripts/yugoo_cli.py chat \
  -c $CID \
  -m "Build a todo app with add, complete, and delete features" \
  --watch

# Step 3: Publish the application (auto-wait for completion)
python scripts/yugoo_cli.py publish -c $CID --wait

# Step 4: Get the production URL
python scripts/yugoo_cli.py urls -c $CID

Available Commands

Note: All commands automatically use the CREO4U_SKILL_API_KEY environment variable for authentication.

create

Create a new conversation.

python scripts/yugoo_cli.py create [--name NAME]

Parameter	Default	Description
`--name`	`New Conversation`	Conversation name

Output: JSON with conversation_id, name, status, created_at.

upload

Upload a local file as a chat attachment. The file is uploaded to OSS and the returned oss_path can be passed to chat --attachment.

python scripts/yugoo_cli.py upload --file /path/to/file

Parameter	Required	Description
`--file`	Yes	Local file path to upload (max 50MB)

Output: JSON with oss_path, filename, file_md5, size_bytes.

{"oss_path": "chat/attachments/123/abc123def456/document.pdf", "filename": "document.pdf", "file_md5": "abc123def456...", "size_bytes": 1048576}

Example — Upload then chat with attachment:

# Step 1: Upload the file
UPLOAD=$(python scripts/yugoo_cli.py upload --file design.png)
OSS_PATH=$(echo $UPLOAD | python -c "import sys,json; print(json.load(sys.stdin)['oss_path'])")

# Step 2: Send message with attachment
python scripts/yugoo_cli.py chat -c $CID -m "参考这个设计图来实现页面" --attachment "$OSS_PATH" --watch

chat

Send a message and optionally watch for completion via polling. This is the primary workflow command.

python scripts/yugoo_cli.py chat -c CID -m "message" [--watch] [--attachment OSS_PATH]
python scripts/yugoo_cli.py chat -c CID -f /path/to/file [--watch]

Parameter	Required	Description
`-c`, `--conversation-id`	No	Conversation ID (omit to auto-create)
`-m`, `--content`	No*	Message content (use `-` to read from stdin)
`-f`, `--file`	No*	Read message content from a local file path
`-w`, `--watch`	No	Poll for completion after sending message (15s interval)
`--agent-name`	No	Specific agent to handle the message
`--context`	No	JSON string for additional context
`--attachment`	No	OSS path of uploaded attachment (repeatable for multiple files)
`--model-choice`	No	Model selection for the Task agent. Accepts a preset (`auto` \| `economy` \| `advance` \| `expert`) or a concrete model id from the `models` command. Omit (or pass `auto`) to use smart routing. Only affects the Task agent; the Pilot agent always uses the platform default.

*Either --content or --file is required. --file takes priority if both are provided.

Output without --watch: Single JSON line with message_id, conversation_id.

Output with --watch: Polling mode with completion status

{"event": "message_accepted", "message_id": "...", "conversation_id": "..."}
{"event": "poll", "iteration": 1, "state": "pending"}
{"event": "poll", "iteration": 2, "state": "running"}
{"event": "poll_completed", "iteration": 3, "state": "completed", "snapshot": {...}}

Important:

Use --watch for most cases — it sends the message AND polls for completion in one command.
Use --file to send a local file's content as the message — useful for long requirement documents or pre-written prompts.
Use --content - to read long prompts from stdin.
Use upload command first to get oss_path, then pass it via --attachment.
Use --model-choice to override the default model routing (see Model Selection).

Example — pick a model preset:

# Use the high-capability "expert" preset for the Task agent
python scripts/yugoo_cli.py chat -c $CID -m "Refactor the auth flow" --model-choice expert --watch

# Use a concrete model id (look it up via the `models` command first)
python scripts/yugoo_cli.py chat -c $CID -m "Add tests" --model-choice claude-sonnet-4-6 --watch

models

List available model presets and concrete model ids for use with chat --model-choice. This is a public endpoint and does not consume credit.

python scripts/yugoo_cli.py models

Output:

{
  "presets": [
    {"id": "auto", "display_name": "Auto", "description": "Smart routing", "is_default": true, "first_model": "...", "fallback_chain": ["..."]},
    {"id": "economy", "display_name": "Economy", "description": "Cheaper, faster models", "first_model": "...", "fallback_chain": ["..."]},
    {"id": "advance", "display_name": "Advance", "description": "Balanced", "first_model": "...", "fallback_chain": ["..."]},
    {"id": "expert", "display_name": "Expert", "description": "Highest capability", "first_model": "...", "fallback_chain": ["..."]}
  ],
  "models": [
    {"id": "claude-sonnet-4-6", "display_name": "Claude Sonnet 4.6", "series": "claude", "price_tier": "advance", "is_latest": true, "enabled": true, "context_window": 200000}
  ],
  "default_choice": "auto"
}

When to use:

Before the first chat in a session, if you want a non-default model.
When the user explicitly asks "which models can I use?" / "switch to a cheaper model" / etc.
Pass either a preset id (e.g. expert) or a concrete model id (e.g. claude-sonnet-4-6) to chat --model-choice.

publish

Trigger deployment to production.

python scripts/yugoo_cli.py publish -c CID [--wait]

Parameter	Required	Description
`-c`, `--conversation-id`	Yes	Conversation ID to publish
`-w`, `--wait`	No	Auto-poll publish status until published or failed

Examples:

1. Publish and manually check status:

python scripts/yugoo_cli.py publish -c $CID

2. Publish and auto-wait for completion (recommended):

python scripts/yugoo_cli.py publish -c $CID --wait

Important:

Application must be created before publishing
After successful publish, the app is live at the preview URL
Use --wait flag to avoid manual polling

publish-status

Check the status of a deployment.

python scripts/yugoo_cli.py publish-status -c CID

Parameter	Required	Description
`-c`, `--conversation-id`	Yes	Conversation ID

Output: JSON with status: created, publishing, published, or failed

Usage Pattern:

# Publish and auto-wait for completion (recommended)
python scripts/yugoo_cli.py publish -c $CID --wait

# Or check status manually
python scripts/yugoo_cli.py publish-status -c $CID

Tip: Use publish --wait to avoid manual polling.

messages

Get the full conversation snapshot (all messages and state).

python scripts/yugoo_cli.py messages -c CID

Output: Complete snapshot JSON with all runs, messages, panels, and metadata.

result

Extract structured development results from the conversation snapshot. This is the recommended way to get results after a chat --watch completes.

python scripts/yugoo_cli.py result -c CID [--message-id MID]

Parameter	Required	Description
`-c`, `--conversation-id`	Yes	Conversation ID
`--message-id`	No	Specific message run (default: latest)

Output:

{
  "conversation_id": "...",
  "message_id": "...",
  "status": "completed",
  "summary": "Built a full-stack todo application...",
  "files_generated": ["src/App.tsx", "backend/main.py"],
  "files_modified": ["package.json"],
  "assistant_messages": ["..."],
  "tasks": [
    {"task_id": "...", "title": "Generate frontend code", "status": "completed", "type": "streaming_multi_file"}
  ],
  "error": null,
  "token_usage": {"prompt_tokens": 1234, "completion_tokens": 5678, "total_tokens": 6912},
  "credit_usage": 100,
  "started_at": 1705771805000,
  "completed_at": 1705771900000
}

stop

Stop message generation in progress.

python scripts/yugoo_cli.py stop -c CID --message-id MID

start-runtime

Start or restart the conversation runtime (container environment).

python scripts/yugoo_cli.py start-runtime -c CID

Use this after a container has been reclaimed due to inactivity.

list

List conversations with pagination and filtering.

python scripts/yugoo_cli.py list [--limit N] [--offset N] [--keyword KW] [--sort-by FIELD] [--sort-order asc|desc]

get

Get conversation details.

python scripts/yugoo_cli.py get -c CID

delete

Terminate a conversation.

python scripts/yugoo_cli.py delete -c CID

health

Check sandbox services health (frontend, backend, sandbox interface).

python scripts/yugoo_cli.py health -c CID

Output:

{
  "frontend": {"ready": true, "status_code": 200, "message": "Frontend service is ready"},
  "backend": {"ready": true, "status_code": 200, "message": "Backend service is ready"},
  "sandbox": {"ready": true, "status_code": 200, "message": "Sandbox service is ready"},
  "all_ready": true
}

urls

Get sandbox, preview, and backend URLs for the development environment.

python scripts/yugoo_cli.py urls -c CID

Output:

{"sandbox_url": "https://sandbox-xxx.domain.com", "preview_url": "https://preview-xxx.domain.com", "backend_url": "https://backend-xxx.domain.com"}

download

Download workspace as a zip file.

python scripts/yugoo_cli.py download -c CID

Output: JSON with download_url, filename, size_mb, md5.

versions

List all saved versions for a conversation.

python scripts/yugoo_cli.py versions -c CID [--sort-order asc|desc]

Parameter	Required	Description
`-c`, `--conversation-id`	Yes	Conversation ID
`--sort-order`	No	Sort direction: `asc` (oldest first) or `desc` (newest first, default)

Output: JSON with conversation_id, current_version, versions array (each with version, timestamp, is_wip, is_published, description, from_version), and total count.

Example:

python scripts/yugoo_cli.py versions -c $CID
# Output: {"conversation_id": "...", "current_version": 3, "versions": [...], "total": 3}

current-version

Get the current active version number and its metadata.

python scripts/yugoo_cli.py current-version -c CID

Parameter	Required	Description
`-c`, `--conversation-id`	Yes	Conversation ID

Output: JSON with conversation_id, current_version, is_wip, from_version, description.

restore-version

Switch workspace to a specific version. This changes the active codebase and restarts the sandbox.

python scripts/yugoo_cli.py restore-version -c CID --version N

Parameter	Required	Description
`-c`, `--conversation-id`	Yes	Conversation ID
`--version`	Yes	Version number to switch to

Output: JSON with success, version, mode (tag or wip), message.

Important:

Switching versions restarts the sandbox runtime automatically.
Cannot switch versions while another operation is in progress (returns 409).
After switching, use chat to continue development from that version.

copy

Create a deep copy of an existing conversation (own application).

python scripts/yugoo_cli.py copy -c CID [--new-name NAME] [--wait]

Parameter	Required	Description
`-c`, `--conversation-id`	Yes	Source conversation ID
`--new-name`	No	Name for the copy (default: "{original name}（副本）")
`-w`, `--wait`	No	Auto-poll copy status until workspace is ready (5s interval, max 10 minutes)

Output: JSON with conversation_id, name, status, created_at of the new conversation.

Important:

Creates a completely independent copy with new conversation ID
Workspace files are copied in the background (1-30 seconds)
The new conversation is immediately usable for chat commands
Use --wait to block until workspace files are fully copied

Example:

# Copy an existing app (without waiting)
NEW=$(python scripts/yugoo_cli.py copy -c $CID --new-name "My App V2")
NEW_CID=$(echo $NEW | python -c "import sys,json; print(json.load(sys.stdin)['conversation_id'])")

# Copy and wait for workspace to be ready
NEW=$(python scripts/yugoo_cli.py copy -c $CID --new-name "My App V2" --wait)
NEW_CID=$(echo $NEW | python -c "import sys,json; print(json.load(sys.stdin)['conversation_id'])")

# Iterate on the copy
python scripts/yugoo_cli.py chat -c $NEW_CID -m "Add dark mode support" --watch

market-list

Browse and search the app market.

python scripts/yugoo_cli.py market-list [--limit N] [--offset N] [--keyword KW] [--category-id ID] [--sort-by FIELD]

Parameter	Required	Description
`--limit`	No	Max results (default: 20)
`--offset`	No	Pagination offset (default: 0)
`--keyword`	No	Search keyword
`--category-id`	No	Filter by category ID
`--sort-by`	No	Sort field (e.g. `view_count`, `clone_count`, `created_at`)

Output: JSON with items array containing market item details (item_id, title, description, clone_count, view_count, etc.) and pagination info.

Example:

# Search for todo apps
python scripts/yugoo_cli.py market-list --keyword "todo"

# Browse most popular apps
python scripts/yugoo_cli.py market-list --sort-by view_count --limit 10

clone-market

Clone an app from the app market into your conversation list.

python scripts/yugoo_cli.py clone-market --item-id ITEM_ID

Parameter	Required	Description
`--item-id`	Yes	Market item ID to clone

Output: JSON with conversation_id, cloned_code, cloned_prd, cloned_history, message_count.

Important:

The cloned app is created as a new conversation you own
What gets cloned depends on the original app's clone permission settings:
- CODE: workspace source files
- PRD: design documents
- HISTORY: conversation messages
Workspace files are copied in the background

Example - Clone from Market and Iterate:

# Step 1: Browse market
python scripts/yugoo_cli.py market-list --keyword "dashboard"

# Step 2: Clone the app (use item_id from market-list result)
CLONE=$(python scripts/yugoo_cli.py clone-market --item-id $ITEM_ID)
CID=$(echo $CLONE | python -c "import sys,json; print(json.load(sys.stdin)['conversation_id'])")

# Step 3: Customize the cloned app
python scripts/yugoo_cli.py chat -c $CID -m "Change the color scheme to dark blue" --watch

# Step 4: Publish your customized version
python scripts/yugoo_cli.py publish -c $CID --wait

delete-version

Delete a WIP (work-in-progress) version and revert to the previous version.

python scripts/yugoo_cli.py delete-version -c CID --version N

Parameter	Required	Description
`-c`, `--conversation-id`	Yes	Conversation ID
`--version`	Yes	Version number to delete

Output: JSON with success, version, reverted_to_version, message.

Important:

Only WIP versions can be deleted. Finalized versions cannot be deleted.
The workspace automatically reverts to the previous version after deletion.
Cannot delete a version while another operation is in progress (returns 409).

finalize-version

Finalize (lock) the current WIP version, making it a permanent checkpoint.

python scripts/yugoo_cli.py finalize-version -c CID

Parameter	Required	Description
`-c`, `--conversation-id`	Yes	Conversation ID

Output: JSON with success, version, from_version, message.

Important:

Only works when the workspace is on a WIP branch.
After finalization, the version becomes a permanent tag that cannot be deleted.
Use this to create stable checkpoints before making major changes.

update-version-desc

Update the description of a specific version.

python scripts/yugoo_cli.py update-version-desc -c CID --version N --description "description text"

Parameter	Required	Description
`-c`, `--conversation-id`	Yes	Conversation ID
`--version`	Yes	Version number
`--description`	Yes	New description text

Output: JSON with success, version, description, message.

rename

Rename a conversation.

python scripts/yugoo_cli.py rename -c CID --name "New Name"

spending

Get message-level spending (cost and time) for a conversation. Supports filtering by message_id to query a single message's cost and duration.

python scripts/yugoo_cli.py spending -c CID [--message-id MID] [--limit N] [--offset N]

Parameter	Required	Description
`-c`, `--conversation-id`	Yes	Conversation ID
`--message-id`	No	Filter by specific message ID
`--limit`	No	Max results (default: 50)
`--offset`	No	Pagination offset (default: 0)

Output:

{
  "session_id": "202501201430-a1b2c3d4",
  "app_name": "My Web App",
  "total_cost": "1500",
  "total": 1,
  "items": [
    {
      "message_id": "msg-001",
      "message_preview": "Build a login page...",
      "total_cost": "300",
      "record_count": 3,
      "first_billing_at": "2025-01-20T14:30:00",
      "last_billing_at": "2025-01-20T14:35:00",
      "started_at": "2025-01-20T14:30:00",
      "finished_at": "2025-01-20T14:35:00",
      "duration_seconds": 300.0
    }
  ],
  "limit": 20,
  "offset": 0
}

Fields:

total_cost: Total credits consumed for the entire conversation (integer string)
items[].total_cost: Credits consumed per message/development round
items[].started_at / finished_at: Start and end timestamps of the development round
items[].duration_seconds: Duration of the development round in seconds
items[].first_billing_at / last_billing_at: Time range of billing for each round

Output Conventions

stdout: JSON lines (one JSON object per line). Machine-readable.
stderr: Error messages and metadata.
Exit code 0: Success.
Exit code 1: Error (details on stderr as JSON).

Every stdout line is a complete, self-contained JSON object. This enables piping to jq for filtering and line-by-line processing by AI agents.

Polling Mode

The chat and publish commands with --watch use polling to monitor progress:

Interval: Fixed 15 seconds between polls
Single request timeout: 10 minutes (40 iterations per request)
Maximum total timeout: 1 hour (up to 6 retries)

Polling stops automatically when the run reaches completed or failed state.

Recommendation: Use --wait flag for publish command to auto-poll status.

poll

Resume polling for a message that is still in progress (after a poll_timeout).

python scripts/yugoo_cli.py poll -c CID --message-id MID

Parameter	Required	Description
`-c`, `--conversation-id`	Yes	Conversation ID
`--message-id`	Yes	Message ID to poll

Output: Same as chat --watch — emits poll events and ends with poll_completed or poll_timeout.

CRITICAL: Polling Completion Rules

You MUST follow these rules strictly when using chat --watch:

Single request timeout is 10 minutes: Each chat --watch or poll command polls for up to 10 minutes. If the development is not done, the CLI emits a poll_timeout event and exits. This is normal — development can take longer than 10 minutes.
On poll_timeout, you MUST retry using the poll command: When you receive a poll_timeout event, immediately run the poll command with the same conversation_id and message_id to resume monitoring. Do NOT treat poll_timeout as a failure or stop.

Maximum 6 retries (1 hour total): You may retry the poll command up to 6 times (including the initial chat --watch). This ensures a maximum total timeout of 1 hour (6 × 10 min). If all 6 attempts time out, then treat it as a genuine timeout and report to the user.

Retry flow:

chat --watch (attempt 1, up to 10 min)
  → poll_timeout? → poll (attempt 2, up to 10 min)
    → poll_timeout? → poll (attempt 3, up to 10 min)
      → poll_timeout? → poll (attempt 4, up to 10 min)
        → poll_timeout? → poll (attempt 5, up to 10 min)
          → poll_timeout? → poll (attempt 6, up to 10 min)
            → poll_timeout? → report timeout to user

Example:

# Initial request
python scripts/yugoo_cli.py chat -c $CID -m "Build a complex app" --watch
# If poll_timeout, resume with poll:
python scripts/yugoo_cli.py poll -c $CID --message-id $MID
# Repeat poll up to 5 more times if needed

Wait for ALL tasks to complete: The polling only ends with poll_completed when every task and phase in the development pipeline has finished (status = completed or failed). Do NOT consider the operation done just because an assistant message appeared or a partial result was returned.
Do NOT stop polling on intermediate messages: During development, the platform may return intermediate status messages such as:
- "服务正在启动中，预计还需要几分钟时间。前端服务启动后即可访问！"
- "正在生成代码..."
- "正在部署..."
- Any message indicating services are still starting or building
These are progress updates, NOT completion signals. You MUST continue waiting for the poll_completed event. Never interpret these messages as the final result.
Only poll_completed means truly done:
- poll_completed → Development finished. Proceed to result and spending.
- poll_timeout → Not finished yet. Retry with poll command (up to 6 total attempts).

Error Handling

All HTTP errors produce JSON on stderr:

{"error": {"error": "CONVERSATION_NOT_FOUND", "message": "Conversation not found"}, "status_code": 404}

Common error codes:

Status	Error	Meaning
402	`INSUFFICIENT_CREDIT`	User has insufficient credit
404	`CONVERSATION_NOT_FOUND`	Conversation does not exist
409	`CONVERSATION_IN_PROGRESS`	Another message is being processed
409	`WIP_VERSION_CONFLICT`	Version conflict during message send
409	`PUBLISH_IN_PROGRESS`	Another publish is being processed
501	`NOT_IMPLEMENTED`	Feature not available in current mode

If the conversation is locked (409), wait a few seconds and retry.

Application Copy & Clone Workflow

Copy Your Own Application

Use copy to create an independent copy of your existing application, then iterate on it:

# Copy the app
NEW=$(python scripts/yugoo_cli.py copy -c $CID --new-name "Todo App V2")
NEW_CID=$(echo $NEW | python -c "import sys,json; print(json.load(sys.stdin)['conversation_id'])")

# Develop on the copy
python scripts/yugoo_cli.py chat -c $NEW_CID -m "Add user authentication" --watch

# Publish the new version
python scripts/yugoo_cli.py publish -c $NEW_CID --wait

Clone from App Market

Use market-list to find apps, then clone-market to clone into your workspace:

# Browse the market
python scripts/yugoo_cli.py market-list --keyword "ecommerce" --limit 5

# Clone an app (use item_id from market-list output)
CLONE=$(python scripts/yugoo_cli.py clone-market --item-id $ITEM_ID)
CID=$(echo $CLONE | python -c "import sys,json; print(json.load(sys.stdin)['conversation_id'])")

# Customize the cloned app
python scripts/yugoo_cli.py chat -c $CID -m "Replace product catalog with my inventory" --watch

# Get results and publish
python scripts/yugoo_cli.py result -c $CID
python scripts/yugoo_cli.py publish -c $CID --wait
python scripts/yugoo_cli.py urls -c $CID

Version Management Workflow

Versions allow you to create checkpoints, switch between states, and safely experiment.

View and Switch Versions

# List all versions
python scripts/yugoo_cli.py versions -c $CID

# Check current version
python scripts/yugoo_cli.py current-version -c $CID

# Switch to an earlier version
python scripts/yugoo_cli.py restore-version -c $CID --version 2

Create a Checkpoint (Finalize)

After development, finalize the current WIP version to create a permanent checkpoint:

# Develop features
python scripts/yugoo_cli.py chat -c $CID -m "Add payment integration" --watch

# Lock the version as a stable checkpoint
python scripts/yugoo_cli.py finalize-version -c $CID

# Add a description to the version
python scripts/yugoo_cli.py update-version-desc -c $CID --version 3 --description "Added payment integration with Stripe"

Undo Changes (Delete WIP Version)

If a development round didn't go well, delete the WIP version to revert:

# Check current version (e.g., version 4, WIP)
python scripts/yugoo_cli.py current-version -c $CID

# Delete the WIP version and revert to previous
python scripts/yugoo_cli.py delete-version -c $CID --version 4

# Now back at version 3 — try again
python scripts/yugoo_cli.py chat -c $CID -m "Add payment integration using a different approach" --watch

Error Handling Guidance

Agents should handle the following situations:

publish requested before application has been created
missing conversation_id
interrupted polling loop
failed deployment status
incorrect or missing parameter values

If workflow state is unclear, inspect the conversation or use result command before taking the next action.

Pro Tips:

Always check command --help when unsure about parameters
Use --wait flag with publish to simplify deployment
Save conversation_id from create response
After creation, use chat directly for modifications

Application Sharing Rule (IMPORTANT)

You must share your application only using the production preview URL (after it has been published).

Production preview URL format:

https://preview-{conversation_id}.creo4u.com/

If the application has not been published, you must publish it before sharing with others.

Example publish command:

python scripts/yugoo_cli.py publish -c $CID --wait

Tips

Use --watch with chat for the common case — it sends the message and polls for completion.
Use --wait with publish to auto-poll deployment status.
Use result after completion to get a clean summary without parsing poll events.
Use --file with chat to send a local file's content as the message, useful for long requirement documents or pre-written prompts.
The --content - flag reads message content from stdin, useful for long prompts.
conversation_id is abbreviated as -c in all commands for convenience.
Always check result output for status: "failed" and error field to detect failures.
Use health to verify the sandbox is ready before sending development instructions.
Use start-runtime to restart a container that was reclaimed due to inactivity.

Development Completion Best Practice

After an application is built, do NOT manually inspect the generated code files.

After chat --watch (or poll) completes with poll_completed:

Query Development Cost and Development Time using the spending command with --message-id:

python scripts/yugoo_cli.py spending -c "$CID" --message-id "$MID"

Extract from the response:

Development Cost: items[0].total_cost (Credits)
Development Time: items[0].duration_seconds (seconds)

Publish and get URLs:

python scripts/yugoo_cli.py publish -c "$CID" --wait
python scripts/yugoo_cli.py urls -c "$CID"

Then respond with the following fixed format (do NOT change field names or order):

**Application Summary**: [one-line description of what was built and key features]

**Preview URL**: https://preview-{conversation_id}.creo4u.com/

**Publish URL**: [url field from publish command output]

**Publish Status**: [published / failed]

**Development Cost**: [N] Credits

**Development Time**: [N]s

IMPORTANT: Always publish after development completes. Never skip any field. Always include both Preview URL and Publish URL.