persona-chat.dev
Persona is an open-source, themeable AI chat widget you can add to any website in minutes. SSE streaming, agent loops, tool use, and style isolation: zero framework dependencies.
First seen 2026-08-17 · Last seen 2026-08-17 · Source: webmcp.com
Answer 10 · Act 29 · Transact 3 · Score: Not yet scored
Tool inspector
update_element
Merge a partial patch into one element: position, size, text, and style in a single call. Omitted keys are unchanged. Returns the updated element.
Page: /webmcp-slides.html
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
elementId |
string | yes | — |
patch |
object | yes | Partial element properties to merge; omitted keys are unchanged. |
Raw JSON schema
{
"type": "object",
"required": [
"elementId",
"patch"
],
"properties": {
"elementId": {
"type": "string"
},
"patch": {
"type": "object",
"description": "Partial element properties to merge; omitted keys are unchanged.",
"properties": {
"x": {
"type": "number",
"description": "Slide units; the canvas is 960 wide x 540 tall, origin at the top-left."
},
"y": {
"type": "number"
},
"w": {
"type": "number"
},
"h": {
"type": "number"
},
"rotation": {
"type": "number",
"description": "Degrees clockwise."
},
"z": {
"type": "number",
"description": "Stacking order; higher renders on top."
},
"text": {
"type": "string",
"description": "Text elements only. Use \\n for line breaks."
},
"fontSize": {
"type": "number"
},
"fontFamily": {
"type": "string",
"description": "Font stack, or a theme token: 'theme.heading' / 'theme.body'. Prefer tokens."
},
"fontWeight": {
"type": "number",
"description": "400 normal, 700 bold."
},
"color": {
"type": "string",
"description": "CSS color (e.g. '#0f172a') or a theme token: 'theme.background', 'theme.surface', 'theme.text', 'theme.accent', 'theme.accentText'. Prefer tokens so the deck restyles when the theme changes."
},
"align": {
"type": "string",
"enum": [
"left",
"center",
"right"
]
},
"fill": {
"type": "string",
"description": "CSS color (e.g. '#0f172a') or a theme token: 'theme.background', 'theme.surface', 'theme.text', 'theme.accent', 'theme.accentText'. Prefer tokens so the deck restyles when the theme changes."
},
"stroke": {
"type": "string",
"description": "CSS color (e.g. '#0f172a') or a theme token: 'theme.background', 'theme.surface', 'theme.text', 'theme.accent', 'theme.accentText'. Prefer tokens so the deck restyles when the theme changes."
},
"strokeWidth": {
"type": "number"
},
"src": {
"type": "string",
"description": "Image URL, or 'placeholder' for a styled placeholder block."
}
}
}
}
}
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