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Chat is the primary way users build. The agent streams replies, runs tools, writes files, and looks up photographs before placing them in the layout.
| Element | Meaning |
|---|---|
| Thinking | Collapsible thought block |
| Tool cards | Active / complete labels for each tool |
| Photograph card | Image icon. Looking up photographs / Looked up N photographs. The scene query is not shown in the transcript. |
| File write cards | Complete files applied to the workspace |
| Credits | Balance; insufficient → upgrade drawer |
Stream: GET …/chat/stream/{messageId} (SSE).
Cancel: session cancel endpoint.
Schemas are defined in LabToolCatalog. Names used at runtime include:
| Tool | What it does |
|---|---|
list_dir / file_search / grep / read_file | Inspect the working VFS |
write_file | Atomic full-file overwrite. Body must be complete and balanced. There is no per-turn file-count cap. Always overwrite src/App.jsx in the same turn as the first sections so Preview is not the seed canvas. |
lookup_visuals | Fetch licensed stock photographs. Call in its own round before write_file when a page needs real photos. Use each returned src. Never invent Unsplash/Pixabay IDs. |
If the first turn only writes CSS and section files, Lab continues automatically until src/App.jsx imports those sections.
Operators configure Unsplash / Pixabay under Stock Images. Search uses the Unsplash Access Key. Empty lookup results → CSS or illustration, not fake photo URLs.
The first product brief mints a short invented wordmark (see Projects). The chat prompt is never used as the title.
| Env / config | Role |
|---|---|
| Pack credit grants | Metering |
| Model max output | Tokens per Lab turn (executor uses the model ceiling) |
survey_datastore |
| Inspect Supabase connection and schema before inventing tables |