webmcp-beryl.vercel.app
A presentation editor where a human and an AI agent edit the same live deck through WebMCP — click a region to edit it directly, or let an agent call one of 19 tools to build slides, charts, and…
First seen 2026-11-05 · Last seen 2026-11-05 · Source: webmcp.com
Answer 3 · Act 15 · Transact 1 · Score: Not yet scored
Tool inspector
adjust_font_size
Nudges a region's font size up or down by one step from its current size (each step is roughly 10%, clamped to a sane range). Call this when the user asks to make text bigger/smaller on a specific region, or when a region's text looks cramped or too large. Content is auto-fit to its region as it's written, so this is for manual fine-tuning on top of that, not required for normal use. If slideId is omitted, targets the currently active slide.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
slideId |
string | no | The id of the slide the region belongs to. Defaults to the active slide if omitted. |
regionId |
string | yes | The region's id (from get_slide_structure) OR its name directly (e.g. 'title', 'body', 'left_body', 'right_body', 'media') — names are stable per layout. Prefer just trying a likely name directly (including right after the active slide changes) rather than calling get_slide_structure defensively first: a wrong name fails with a clear list of that slide's actual region names, which is cheap to recover from and faster than checking every time. |
direction |
string | yes | Whether to increase or decrease the font size |
Raw JSON schema
{
"type": "object",
"properties": {
"slideId": {
"type": "string",
"description": "The id of the slide the region belongs to. Defaults to the active slide if omitted."
},
"regionId": {
"type": "string",
"description": "The region's id (from get_slide_structure) OR its name directly (e.g. 'title', 'body', 'left_body', 'right_body', 'media') — names are stable per layout. Prefer just trying a likely name directly (including right after the active slide changes) rather than calling get_slide_structure defensively first: a wrong name fails with a clear list of that slide's actual region names, which is cheap to recover from and faster than checking every time."
},
"direction": {
"type": "string",
"description": "Whether to increase or decrease the font size",
"enum": [
"increase",
"decrease"
]
}
},
"required": [
"regionId",
"direction"
]
}
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