AI agent draws editable hand-drawn diagrams (flowchart, ER, architecture) via MCP, not static images
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Create a custom CodePic hand-drawn style diagram by specifying nodes and edges. Requires API Key authentication. Returns a public view URL. **THIS IS THE DEFAULT TOOL FOR ANY USER-DESCRIBED DIAGRAM.** Whenever the user describes a diagram they want ("draw an A/B test flowchart", "帮我画一个登录流程", "a system architecture with a load balancer and 3 servers", etc.), build it here from their description. Do NOT fall back to `create_from_template` / `list_templates` unless the user explicitly asked for a template. When responding to the user, present the returned URL as a clickable markdown link (e.g. `[Open in CodePic →](URL)`) so the user can click it directly in their AI client (Cursor / Claude / etc.). **Container nesting (IMPORTANT — use whenever possible):** - Set `parentId` on a node to nest it inside another node. ANY node type can be a container. - The parent automatically becomes draggable-as-a-group and users can keep dropping elements into it. - Call `get_shape_catalog` with tag `container-capable` to choose among native structural containers and adaptive semantic shapes such as rectangles, circles, ellipses, diamonds, cylinders, and hexagons. - Parent bounds are expanded automatically using the selected shape's title and outline safe area. - Use absolute canvas coordinates for all nodes — child coordinates are auto-converted to parent-relative. - Set node `name`, `description`, and `tags` when later MCP/Agent reads need stable business semantics beyond visible text. - **Rule**: whenever 2+ nodes logically belong to the same module / component / region, create a container node first and set `parentId` on each child. **Design tips for beautiful diagrams:** - Use semantic types: `button-primary` for CTA buttons (auto blue), `diamond` for decisions - Pick a color palette and apply it consistently — light fill + darker stroke of the same hue: • Blue: fillColor #e3f2fd / #bbdefb, strokeColor #1565c0, fontColor #1565c0 (or #ffffff on dark fill) • Green: fillColor #e8f5e9 / #c8e6c9, strokeColor #2e7d32, fontColor #1b5e20 • Purple: fillColor #f3e5f5 / #e1bee7, strokeColor #6a1b9a, fontColor #4a148c • Neutral: fillColor #f8fafc / #f1f5f9, strokeColor #475569, fontColor #1e293b - Each semantic group (decisions, processes, I/O) should share a fill color to create visual hierarchy - Dark fill (e.g. #1565c0, #ef4444) → fontColor #ffffff; light fill → fontColor #111827
Document name
Array of shape nodes to place on the canvas
Array of connector edges between nodes
Canvas background color (default: '#f8f9fa')
This tool isn't marked read-only, so it may change something on the server or in an account you connected.
Create a custom CodePic hand-drawn style diagram by specifying nodes and edges. Requires API Key authentication. Returns a public view URL. **THIS IS THE DEFAULT TOOL FOR ANY USER-DESCRIBED DIAGRAM.** Whenever the user describes a diagram they want ("draw an A/B test flowchart", "帮我画一个登录流程", "a system architecture with a load balancer and 3 servers", etc.), build it here from their description. Do NOT fall back to `create_from_template` / `list_templates` unless the user explicitly asked for a template. When responding to the user, present the returned URL as a clickable markdown link (e.g. `[Open in CodePic →](URL)`) so the user can click it directly in their AI client (Cursor / Claude / etc.). **Container nesting (IMPORTANT — use whenever possible):** - Set `parentId` on a node to nest it inside another node. ANY node type can be a container. - The parent automatically becomes draggable-as-a-group and users can keep dropping elements into it. - Call `get_shape_catalog` with tag `container-capable` to choose among native structural containers and adaptive semantic shapes such as rectangles, circles, ellipses, diamonds, cylinders, and hexagons. - Parent bounds are expanded automatically using the selected shape's title and outline safe area. - Use absolute canvas coordinates for all nodes — child coordinates are auto-converted to parent-relative. - Set node `name`, `description`, and `tags` when later MCP/Agent reads need stable business semantics beyond visible text. - **Rule**: whenever 2+ nodes logically belong to the same module / component / region, create a container node first and set `parentId` on each child. **Design tips for beautiful diagrams:** - Use semantic types: `button-primary` for CTA buttons (auto blue), `diamond` for decisions - Pick a color palette and apply it consistently — light fill + darker stroke of the same hue: • Blue: fillColor #e3f2fd / #bbdefb, strokeColor #1565c0, fontColor #1565c0 (or #ffffff on dark fill) • Green: fillColor #e8f5e9 / #c8e6c9, strokeColor #2e7d32, fontColor #1b5e20 • Purple: fillColor #f3e5f5 / #e1bee7, strokeColor #6a1b9a, fontColor #4a148c • Neutral: fillColor #f8fafc / #f1f5f9, strokeColor #475569, fontColor #1e293b - Each semantic group (decisions, processes, I/O) should share a fill color to create visual hierarchy - Dark fill (e.g. #1565c0, #ef4444) → fontColor #ffffff; light fill → fontColor #111827
| Argument | Type | Description |
|---|---|---|
| name* | string | Document name |
| edges | array | Array of connector edges between nodes |
| nodes* | array | Array of shape nodes to place on the canvas |
| backgroundColor | string | Canvas background color (default: '#f8f9fa') |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"name",
"nodes"
],
"properties": {
"name": {
"type": "string",
"description": "Document name"
},
"edges": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"sourceId",
"targetId"
],
"properties": {
"id": {
"type": "string",
"description": "Unique edge ID"
},
"label": {
"type": "string",
"description": "Edge label text"
},
"sourceId": {
"type": "string",
"description": "Source node ID"
},
"targetId": {
"type": "string",
"description": "Target node ID"
}
},
"additionalProperties": false
},
"description": "Array of connector edges between nodes"
},
"nodes": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"text",
"x",
"y"
],
"properties": {
"x": {
"type": "number",
"description": "X position"
},
"y": {
"type": "number",
"description": "Y position"
},
"id": {
"type": "string",
"description": "Unique node ID"
},
"data": {
"type": "object",
"description": "Type-specific state data. Call get_shape_docs for the full field list. Examples: select→{options:[{id,label}],selectedId,open}, checkbox/radio→{checked}, switch→{on}, slider→{min,max,value}, input/textarea→{placeholder}, link→{href}, icon→{iconName}, triangle→{triangleDirection:'up'|'down'|'left'|'right'}, callout→{calloutTailX,calloutBodyRatio}.",
"additionalProperties": {}
},
"name": {
"type": "string",
"maxLength": 80,
"description": "Stable semantic name for MCP/Agent understanding, e.g. 'payment-service'."
},
"tags": {
"type": "array",
"items": {
"type": "string",
"maxLength": 48,
"minLength": 1
},
"maxItems": 12,
"description": "Instance-level semantic tags for future MCP/Agent reads, e.g. ['backend','critical','pii']. Use get_shape_catalog tags for shape selection; use this field for the node's role in this diagram."
},
"text": {
"anyOf": [
{
"type": "object",
"required": [
"kind",
"version",
"blocks"
],
"properties": {
"kind": {
"type": "string",
"const": "rich-text"
},
"blocks": {
"type": "array",
"items": {
"anyOf": [
{
"type": "object",
"required": [
"type",
"runs"
],
"properties": {
"runs": {
"type": "array",
"items": {
"type": "object",
"required": [
"text"
],
"properties": {
"href": {
"type": "string",
"format": "uri"
},
"text": {
"type": "string"
},
"style": {
"type": "object",
"properties": {
"fontSize": {
"type": "number",
"exclusiveMinimum": 0
},
"fontColor": {
"type": "string",
"minLength": 1
},
"fontStyle": {
"type": "string",
"minLength": 1
},
"fontFamily": {
"type": "string",
"minLength": 1
},
"fontWeight": {
"type": "string",
"minLength": 1
},
"textDecoration": {
"enum": [
"none",
"underline",
"line-through"
],
"type": "string"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"minItems": 1
},
"type": {
"type": "string",
"const": "paragraph"
},
"textAlign": {
"enum": [
"left",
"center",
"right"
],
"type": "string"
}
},
"additionalProperties": false
},
{
"type": "object",
"required": [
"type",
"listType",
"runs"
],
"properties": {
"runs": {
"type": "array",
"items": {
"$ref": "#/properties/nodes/items/properties/text/anyOf/0/properties/blocks/items/anyOf/0/properties/runs/items"
},
"minItems": 1
},
"type": {
"type": "string",
"const": "list-item"
},
"level": {
"type": "integer",
"maximum": 5,
"minimum": 0
},
"listType": {
"enum": [
"ordered",
"unordered"
],
"type": "string"
},
"textAlign": {
"enum": [
"left",
"center",
"right"
],
"type": "string"
}
},
"additionalProperties": false
}
]
},
"minItems": 1
},
"version": {
"type": "number",
"const": 1
}
},
"additionalProperties": false
},
{
"type": "string"
}
],
"description": "Text content. Use RichTextContent for normal shapes; code/input use a raw string; frame uses a string title."
},
"type": {
"enum": [
"rect",
"ellipse",
"circle",
"diamond",
"parallelogram",
"document",
"cylinder",
"hexagon",
"triangle",
"callout",
"cloud",
"terminator",
"cross",
"off-page-connector",
"actor",
"note",
"component",
"end-node",
"start-node",
"fork-bar",
"predefined-process",
"delay",
"manual-input",
"stored-data",
"text",
"textarea",
"link",
"icon",
"image",
"frame",
"package",
"swimlane",
"rounded-rect",
"table",
"button",
"button-primary",
"button-secondary",
"button-destructive",
"button-ghost",
"input",
"select",
"checkbox",
"radio",
"switch",
"slider",
"progress",
"server",
"load-balancer",
"firewall",
"container",
"msg-queue",
"queue",
"router",
"lambda",
"cache",
"pod",
"browser-frame",
"mobile-frame",
"code"
],
"type": "string",
"description": "Shape type (default: rect). Call get_shape_docs for full per-type field reference. Common: rect/rounded-rect=card, diamond=decision, parallelogram=I/O, cylinder=database, hexagon=service, actor=user, frame=container group, button-primary=blue CTA, button-destructive=danger action. Architecture: server, load-balancer, firewall, container, msg-queue, router, lambda, cache, pod. UI wireframe: input, select, checkbox, radio, switch, slider. Mockups: browser-frame, mobile-frame. Code: code (syntax-highlighted code block, set data.language and data.theme; calculate width/height from text content: charW=fontSize*0.6, width=lineNumW+32+maxLineChars*charW, height=24+lineCount*fontSize*lineHeight)."
},
"width": {
"type": "number",
"description": "Width (default: 200)"
},
"height": {
"type": "number",
"description": "Height (default: 80)"
},
"corners": {
"type": "array",
"items": [
{
"type": "number"
},
{
"type": "number"
},
{
"type": "number"
},
{
"type": "number"
}
],
"maxItems": 4,
"minItems": 4,
"description": "Border radius [topLeft, topRight, bottomRight, bottomLeft] (default: [0,0,0,0]). Applies to ALL shape types — use to round corners for a more polished look. Rect/frame/input/select/button: [8,8,8,8]–[16,16,16,16]. Rough style (roughness≥1): small corners (4–8). Smooth (roughness:0): larger corners (12–20). Other shapes (diamond, hexagon, etc.) can also use corners for subtle rounding."
},
"opacity": {
"type": "number",
"maximum": 1,
"minimum": 0,
"description": "Opacity 0-1 (default: 1)"
},
"fontSize": {
"type": "number",
"description": "Font size (default: 16)"
},
"parentId": {
"type": "string",
"description": "Parent container node ID. Nest this node inside another node (any type can be a container). The parent automatically becomes containable=true so users can keep dragging elements into it. Call get_shape_catalog with tag='container-capable' to choose a suitable parent shape. Provide x/y as absolute canvas coordinates — they are auto-converted to parent-relative coordinates. WHEN TO USE: whenever multiple nodes logically belong to the same module, region, or component, wrap them in a shared container and set parentId on each child. This lets users reposition the whole group and drag additional elements into it."
},
"rotation": {
"type": "number",
"description": "Rotation angle in radians (default: 0)"
},
"fillColor": {
"type": "string",
"description": "Fill color, e.g. '#e3f2fd'"
},
"fillStyle": {
"enum": [
"none",
"solid",
"hachure",
"cross-hatch"
],
"type": "string",
"description": "Fill style (default: solid)"
},
"fontColor": {
"type": "string",
"description": "Text color (default: '#333333')"
},
"fontStyle": {
"enum": [
"normal",
"italic"
],
"type": "string",
"description": "Font style (default: 'normal')"
},
"roughness": {
"type": "number",
"maximum": 3,
"minimum": 0,
"description": "Hand-drawn roughness 0-3, 0=smooth, 3=very rough (default: 1)"
},
"textAlign": {
"enum": [
"left",
"center",
"right"
],
"type": "string",
"description": "Horizontal text alignment (default: 'center')"
},
"fontFamily": {
"type": "string",
"description": "Font family (default: 'Inter, sans-serif')"
},
"fontWeight": {
"enum": [
"normal",
"bold"
],
"type": "string",
"description": "Font weight (default: 'bold')"
},
"lineHeight": {
"type": "number",
"description": "Line height multiplier (default: 1.2)"
},
"description": {
"type": "string",
"maxLength": 500,
"description": "Concise semantic purpose of this node, independent of its visible text."
},
"strokeColor": {
"type": "string",
"description": "Stroke color, e.g. '#1565c0'"
},
"strokeWidth": {
"type": "number",
"description": "Stroke width in px (default: 2)"
},
"verticalAlign": {
"enum": [
"top",
"center",
"bottom"
],
"type": "string",
"description": "Vertical text alignment (default: 'center')"
}
},
"additionalProperties": false
},
"description": "Array of shape nodes to place on the canvas"
},
"backgroundColor": {
"type": "string",
"description": "Canvas background color (default: '#f8f9fa')"
}
},
"additionalProperties": false
}Create a new CodePic diagram from a predefined template. Requires API Key authentication. Returns a public view URL and edit URL. **STRICT USAGE RULE — READ BEFORE CALLING:** Only call this tool when the user has **explicitly** asked to use a template. Explicit signals include phrases like: "use a template", "from template", "用模板", "从模板创建", "list templates and pick one", or the user directly naming/selecting a template slug. If the user merely describes a diagram they want (e.g. "draw an A/B test flowchart", "帮我画一个登录流程", "给我做一个系统架构图"), **DO NOT** call this tool. Call `create_diagram` instead and build the diagram from the user's description. Never silently substitute a template for a described diagram — the user will get a generic result that does not match what they asked for. When responding to the user, present the returned URL as a clickable markdown link (e.g. `[Open in CodePic →](URL)`) so the user can click it directly in their AI client (Cursor / Claude / etc.).
| Argument | Type | Description |
|---|---|---|
| name | string | Document name (defaults to template name) |
| slug* | string | Template slug (e.g. 'flowchart', 'erd', 'kanban'). Call list_templates to see all. |
| locale | string | Language for template content (default: en) |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"slug"
],
"properties": {
"name": {
"type": "string",
"description": "Document name (defaults to template name)"
},
"slug": {
"type": "string",
"description": "Template slug (e.g. 'flowchart', 'erd', 'kanban'). Call list_templates to see all."
},
"locale": {
"enum": [
"en",
"zh"
],
"type": "string",
"description": "Language for template content (default: en)"
}
},
"additionalProperties": false
}Fetch the current state of an existing CodePic diagram. Returns a compact summary of all elements with their IDs, types, positions, and parent-child relationships. Use this before update_diagram when you need to: add nested children to existing containers, make targeted edits to specific elements, or understand the current structure. Requires API Key authentication.
| Argument | Type | Description |
|---|---|---|
| documentId* | string | Document ID to fetch |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"documentId"
],
"properties": {
"documentId": {
"type": "string",
"description": "Document ID to fetch"
}
},
"additionalProperties": false
}Return compact machine-readable shape metadata for planning a diagram: semantic tags, geometry family, container support, recommended padding, default size, and MCP availability. Use this before create_diagram when choosing shapes or containers. Unlike get_shape_docs, this tool is concise and filterable.
| Argument | Type | Description |
|---|---|---|
| tag | string | Filter by one exact AI tag, e.g. container-capable, decision, database, or architecture. |
| category | string | Filter by the shape category. |
| containerMode | string | Filter by container support. adaptive shapes become containers when they receive children. |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {
"tag": {
"type": "string",
"description": "Filter by one exact AI tag, e.g. container-capable, decision, database, or architecture."
},
"category": {
"enum": [
"basic",
"flow",
"container",
"ui",
"architecture",
"misc"
],
"type": "string",
"description": "Filter by the shape category."
},
"containerMode": {
"enum": [
"native",
"adaptive",
"none"
],
"type": "string",
"description": "Filter by container support. adaptive shapes become containers when they receive children."
}
},
"additionalProperties": false
}Return the full CodePic shape reference — all element types, their fields, data payloads, and JSON examples. Call get_shape_catalog first for concise shape selection and container capabilities; use this tool when you need complete fields or type-specific data (e.g. select options, triangle direction, callout tail). No authentication required.
No arguments.
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {}
}List all available CodePic diagram templates. Use this ONLY when the user has explicitly asked to browse, list, or pick from templates (e.g. "show me templates", "列出模板"). Do NOT call this as a preparatory step when the user just described a diagram they want — in that case go straight to `create_diagram`. Discovering slugs here is only meaningful before a user-confirmed `create_from_template` call.
| Argument | Type | Description |
|---|---|---|
| category | string | Filter by category |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"properties": {
"category": {
"enum": [
"planning",
"design",
"flowchart",
"collaboration",
"engineering"
],
"type": "string",
"description": "Filter by category"
}
},
"additionalProperties": false
}Update an existing CodePic diagram. You can rename it, replace all nodes/edges, or add/remove individual nodes and edges. Requires API Key authentication. When responding to the user, present the returned URL as a clickable markdown link (e.g. `[Open in CodePic →](URL)`) so the user can click it directly in their AI client (Cursor / Claude / etc.).
| Argument | Type | Description |
|---|---|---|
| name | string | New document name |
| edges | array | Full replacement of all edges |
| nodes | array | Full replacement of all nodes. If provided, replaces the entire canvas content. |
| addEdges | array | Edges to add |
| addNodes | array | Nodes to add (without replacing existing ones) |
| documentId* | string | Document ID to update (from a previous create call) |
| removeEdgeIds | array | IDs of edges to remove |
| removeNodeIds | array | IDs of nodes to remove |
| backgroundColor | string | New canvas background color |
{
"type": "object",
"$schema": "http://json-schema.org/draft-07/schema#",
"required": [
"documentId"
],
"properties": {
"name": {
"type": "string",
"description": "New document name"
},
"edges": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"sourceId",
"targetId"
],
"properties": {
"id": {
"type": "string",
"description": "Unique edge ID"
},
"label": {
"type": "string",
"description": "Edge label text"
},
"sourceId": {
"type": "string",
"description": "Source node ID"
},
"targetId": {
"type": "string",
"description": "Target node ID"
}
},
"additionalProperties": false
},
"description": "Full replacement of all edges"
},
"nodes": {
"type": "array",
"items": {
"type": "object",
"required": [
"id",
"text",
"x",
"y"
],
"properties": {
"x": {
"type": "number",
"description": "X position"
},
"y": {
"type": "number",
"description": "Y position"
},
"id": {
"type": "string",
"description": "Unique node ID"
},
"data": {
"type": "object",
"description": "Type-specific state data. Call get_shape_docs for the full field list. Examples: select→{options:[{id,label}],selectedId,open}, checkbox/radio→{checked}, switch→{on}, slider→{min,max,value}, input/textarea→{placeholder}, link→{href}, icon→{iconName}, triangle→{triangleDirection:'up'|'down'|'left'|'right'}, callout→{calloutTailX,calloutBodyRatio}.",
"additionalProperties": {}
},
"name": {
"type": "string",
"maxLength": 80,
"description": "Stable semantic name for MCP/Agent understanding, e.g. 'payment-service'."
},
"tags": {
"type": "array",
"items": {
"type": "string",
"maxLength": 48,
"minLength": 1
},
"maxItems": 12,
"description": "Instance-level semantic tags for future MCP/Agent reads, e.g. ['backend','critical','pii']. Use get_shape_catalog tags for shape selection; use this field for the node's role in this diagram."
},
"text": {
"anyOf": [
{
"type": "object",
"required": [
"kind",
"version",
"blocks"
],
"properties": {
"kind": {
"type": "string",
"const": "rich-text"
},
"blocks": {
"type": "array",
"items": {
"anyOf": [
{
"type": "object",
"required": [
"type",
"runs"
],
"properties": {
"runs": {
"type": "array",
"items": {
"type": "object",
"required": [
"text"
],
"properties": {
"href": {
"type": "string",
"format": "uri"
},
"text": {
"type": "string"
},
"style": {
"type": "object",
"properties": {
"fontSize": {
"type": "number",
"exclusiveMinimum": 0
},
"fontColor": {
"type": "string",
"minLength": 1
},
"fontStyle": {
"type": "string",
"minLength": 1
},
"fontFamily": {
"type": "string",
"minLength": 1
},
"fontWeight": {
"type": "string",
"minLength": 1
},
"textDecoration": {
"enum": [
"none",
"underline",
"line-through"
],
"type": "string"
}
},
"additionalProperties": false
}
},
"additionalProperties": false
},
"minItems": 1
},
"type": {
"type": "string",
"const": "paragraph"
},
"textAlign": {
"enum": [
"left",
"center",
"right"
],
"type": "string"
}
},
"additionalProperties": false
},
{
"type": "object",
"required": [
"type",
"listType",
"runs"
],
"properties": {
"runs": {
"type": "array",
"items": {
"$ref": "#/properties/nodes/items/properties/text/anyOf/0/properties/blocks/items/anyOf/0/properties/runs/items"
},
"minItems": 1
},
"type": {
"type": "string",
"const": "list-item"
},
"level": {
"type": "integer",
"maximum": 5,
"minimum": 0
},
"listType": {
"enum": [
"ordered",
"unordered"
],
"type": "string"
},
"textAlign": {
"enum": [
"left",
"center",
"right"
],
"type": "string"
}
},
"additionalProperties": false
}
]
},
"minItems": 1
},
"version": {
"type": "number",
"const": 1
}
},
"additionalProperties": false
},
{
"type": "string"
}
],
"description": "Text content. Use RichTextContent for normal shapes; code/input use a raw string; frame uses a string title."
},
"type": {
"enum": [
"rect",
"ellipse",
"circle",
"diamond",
"parallelogram",
"document",
"cylinder",
"hexagon",
"triangle",
"callout",
"cloud",
"terminator",
"cross",
"off-page-connector",
"actor",
"note",
"component",
"end-node",
"start-node",
"fork-bar",
"predefined-process",
"delay",
"manual-input",
"stored-data",
"text",
"textarea",
"link",
"icon",
"image",
"frame",
"package",
"swimlane",
"rounded-rect",
"table",
"button",
"button-primary",
"button-secondary",
"button-destructive",
"button-ghost",
"input",
"select",
"checkbox",
"radio",
"switch",
"slider",
"progress",
"server",
"load-balancer",
"firewall",
"container",
"msg-queue",
"queue",
"router",
"lambda",
"cache",
"pod",
"browser-frame",
"mobile-frame",
"code"
],
"type": "string",
"description": "Shape type (default: rect). Call get_shape_docs for full per-type field reference. Common: rect/rounded-rect=card, diamond=decision, parallelogram=I/O, cylinder=database, hexagon=service, actor=user, frame=container group, button-primary=blue CTA, button-destructive=danger action. Architecture: server, load-balancer, firewall, container, msg-queue, router, lambda, cache, pod. UI wireframe: input, select, checkbox, radio, switch, slider. Mockups: browser-frame, mobile-frame. Code: code (syntax-highlighted code block, set data.language and data.theme; calculate width/height from text content: charW=fontSize*0.6, width=lineNumW+32+maxLineChars*charW, height=24+lineCount*fontSize*lineHeight)."
},
"width": {
"type": "number",
"description": "Width (default: 200)"
},
"height": {
"type": "number",
"description": "Height (default: 80)"
},
"corners": {
"type": "array",
"items": [
{
"type": "number"
},
{
"type": "number"
},
{
"type": "number"
},
{
"type": "number"
}
],
"maxItems": 4,
"minItems": 4,
"description": "Border radius [topLeft, topRight, bottomRight, bottomLeft] (default: [0,0,0,0]). Applies to ALL shape types — use to round corners for a more polished look. Rect/frame/input/select/button: [8,8,8,8]–[16,16,16,16]. Rough style (roughness≥1): small corners (4–8). Smooth (roughness:0): larger corners (12–20). Other shapes (diamond, hexagon, etc.) can also use corners for subtle rounding."
},
"opacity": {
"type": "number",
"maximum": 1,
"minimum": 0,
"description": "Opacity 0-1 (default: 1)"
},
"fontSize": {
"type": "number",
"description": "Font size (default: 16)"
},
"parentId": {
"type": "string",
"description": "Parent container node ID. Nest this node inside another node (any type can be a container). The parent automatically becomes containable=true so users can keep dragging elements into it. Call get_shape_catalog with tag='container-capable' to choose a suitable parent shape. Provide x/y as absolute canvas coordinates — they are auto-converted to parent-relative coordinates. WHEN TO USE: whenever multiple nodes logically belong to the same module, region, or component, wrap them in a shared container and set parentId on each child. This lets users reposition the whole group and drag additional elements into it."
},
"rotation": {
"type": "number",
"description": "Rotation angle in radians (default: 0)"
},
"fillColor": {
"type": "string",
"description": "Fill color, e.g. '#e3f2fd'"
},
"fillStyle": {
"enum": [
"none",
"solid",
"hachure",
"cross-hatch"
],
"type": "string",
"description": "Fill style (default: solid)"
},
"fontColor": {
"type": "string",
"description": "Text color (default: '#333333')"
},
"fontStyle": {
"enum": [
"normal",
"italic"
],
"type": "string",
"description": "Font style (default: 'normal')"
},
"roughness": {
"type": "number",
"maximum": 3,
"minimum": 0,
"description": "Hand-drawn roughness 0-3, 0=smooth, 3=very rough (default: 1)"
},
"textAlign": {
"enum": [
"left",
"center",
"right"
],
"type": "string",
"description": "Horizontal text alignment (default: 'center')"
},
"fontFamily": {
"type": "string",
"description": "Font family (default: 'Inter, sans-serif')"
},
"fontWeight": {
"enum": [
"normal",
"bold"
],
"type": "string",
"description": "Font weight (default: 'bold')"
},
"lineHeight": {
"type": "number",
"description": "Line height multiplier (default: 1.2)"
},
"description": {
"type": "string",
"maxLength": 500,
"description": "Concise semantic purpose of this node, independent of its visible text."
},
"strokeColor": {
"type": "string",
"description": "Stroke color, e.g. '#1565c0'"
},
"strokeWidth": {
"type": "number",
"description": "Stroke width in px (default: 2)"
},
"verticalAlign": {
"enum": [
"top",
"center",
"bottom"
],
"type": "string",
"description": "Vertical text alignment (default: 'center')"
}
},
"additionalProperties": false
},
"description": "Full replacement of all nodes. If provided, replaces the entire canvas content."
},
"addEdges": {
"type": "array",
"items": {
"$ref": "#/properties/edges/items"
},
"description": "Edges to add"
},
"addNodes": {
"type": "array",
"items": {
"$ref": "#/properties/nodes/items"
},
"description": "Nodes to add (without replacing existing ones)"
},
"documentId": {
"type": "string",
"description": "Document ID to update (from a previous create call)"
},
"removeEdgeIds": {
"type": "array",
"items": {
"type": "string"
},
"description": "IDs of edges to remove"
},
"removeNodeIds": {
"type": "array",
"items": {
"type": "string"
},
"description": "IDs of nodes to remove"
},
"backgroundColor": {
"type": "string",
"description": "New canvas background color"
}
},
"additionalProperties": false
}