cocos_ui_buildExecutes a planned UI tree in Cocos Creator and returns UUID mapping for created nodes. Partial failures trigger local compensation to keep the scene consistent.
执行已规划 UI 树并返回 UUID 映射；部分失败使用局部补偿
| Name | Required | Description | Default |
|---|---|---|---|
| params | Yes | ||
| projectId | Yes | ||
| instanceId | No | ||
| operationId | No | ||
| expectedRevision | No | ||
| runtimeInstanceId | No |
Changes observed during successful MCP inspections.
v0.1.0-build.6.1c8b81cInput schema / $defsAdded value: +{
+ "__schema0": {
+ "additionalProperties": false,
+ "properties": {
+ "children": {
+ "items": {
+ "$ref": "#/$defs/__schema0"
+ },
+ "maxItems": 200,
+ "type": "array"
+ },
+ "components": {
+ "items": {
+ "oneOf": [
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {},
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.SafeArea",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {},
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.BlockInputEvents",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "opacity": {
+ "maximum": 255,
+ "minimum": 0,
+ "type": "number"
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.UIOpacity",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "anchorPoint": {
+ "additionalProperties": false,
+ "properties": {
+ "x": {
+ "maximum": 1,
+ "minimum": 0,
+ "type": "number"
+ },
+ "y": {
+ "maximum": 1,
+ "minimum": 0,
+ "type": "number"
+ }
+ },
+ "required": [
+ "x",
+ "y"
+ ],
+ "type": "object"
+ },
+ "contentSize": {
+ "additionalProperties": false,
+ "properties": {
+ "height": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ },
+ "width": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ }
+ },
+ "required": [
+ "width",
+ "height"
+ ],
+ "type": "object"
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.UITransform",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "alignCanvasWithScreen": {
+ "type": "boolean"
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.Canvas",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "sizeMode": {
+ "anyOf": [
+ {
+ "const": 0,
+ "type": "number"
+ },
+ {
+ "const": 1,
+ "type": "number"
+ },
+ {
+ "const": 2,
+ "type": "number"
+ }
+ ]
+ },
+ "spriteFrame": {
+ "additionalProperties": false,
+ "properties": {
+ "assetUuid": {
+ "minLength": 1,
+ "type": "string"
+ }
+ },
+ "required": [
+ "assetUuid"
+ ],
+ "type": "object"
+ },
+ "type": {
+ "anyOf": [
+ {
+ "const": 0,
+ "type": "number"
+ },
+ {
+ "const": 1,
+ "type": "number"
+ },
+ {
+ "const": 2,
+ "type": "number"
+ },
+ {
+ "const": 3,
+ "type": "number"
+ }
+ ]
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.Sprite",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "enableWrapText": {
+ "type": "boolean"
+ },
+ "font": {
+ "additionalProperties": false,
+ "properties": {
+ "assetUuid": {
+ "minLength": 1,
+ "type": "string"
+ }
+ },
+ "required": [
+ "assetUuid"
+ ],
+ "type": "object"
+ },
+ "fontSize": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ },
+ "lineHeight": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ },
+ "overflow": {
+ "anyOf": [
+ {
+ "const": 0,
+ "type": "number"
+ },
+ {
+ "const": 1,
+ "type": "number"
+ },
+ {
+ "const": 2,
+ "type": "number"
+ },
+ {
+ "const": 3,
+ "type": "number"
+ }
+ ]
+ },
+ "string": {
+ "maxLength": 10000,
+ "type": "string"
+ },
+ "useSystemFont": {
+ "type": "boolean"
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.Label",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "clickEvents": {
+ "items": {
+ "additionalProperties": false,
+ "properties": {
+ "componentId": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "customEventData": {
+ "maxLength": 1024,
+ "type": "string"
+ },
+ "handler": {
+ "pattern": "^[a-zA-Z][a-zA-Z0-9]{0,63}$",
+ "type": "string"
+ }
+ },
+ "required": [
+ "componentId",
+ "handler"
+ ],
+ "type": "object"
+ },
+ "maxItems": 8,
+ "type": "array"
+ },
+ "interactable": {
+ "type": "boolean"
+ },
+ "target": {
+ "additionalProperties": false,
+ "properties": {
+ "nodeKey": {
+ "minLength": 1,
+ "type": "string"
+ }
+ },
+ "required": [
+ "nodeKey"
+ ],
+ "type": "object"
+ },
+ "transition": {
+ "anyOf": [
+ {
+ "const": 0,
+ "type": "number"
+ },
+ {
+ "const": 1,
+ "type": "number"
+ },
+ {
+ "const": 2,
+ "type": "number"
+ },
+ {
+ "const": 3,
+ "type": "number"
+ }
+ ]
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.Button",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "cellSize": {
+ "additionalProperties": false,
+ "properties": {
+ "height": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ },
+ "width": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ }
+ },
+ "required": [
+ "width",
+ "height"
+ ],
+ "type": "object"
+ },
+ "paddingBottom": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ },
+ "paddingLeft": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ },
+ "paddingRight": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ },
+ "paddingTop": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ },
+ "resizeMode": {
+ "anyOf": [
+ {
+ "const": 0,
+ "type": "number"
+ },
+ {
+ "const": 1,
+ "type": "number"
+ },
+ {
+ "const": 2,
+ "type": "number"
+ }
+ ]
+ },
+ "spacingX": {
+ "maximum": 100000,
+ "minimum": -100000,
+ "type": "number"
+ },
+ "spacingY": {
+ "maximum": 100000,
+ "minimum": -100000,
+ "type": "number"
+ },
+ "type": {
+ "anyOf": [
+ {
+ "const": 0,
+ "type": "number"
+ },
+ {
+ "const": 1,
+ "type": "number"
+ },
+ {
+ "const": 2,
+ "type": "number"
+ },
+ {
+ "const": 3,
+ "type": "number"
+ }
+ ]
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.Layout",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "alignMode": {
+ "anyOf": [
+ {
+ "const": 0,
+ "type": "number"
+ },
+ {
+ "const": 1,
+ "type": "number"
+ },
+ {
+ "const": 2,
+ "type": "number"
+ }
+ ]
+ },
+ "bottom": {
+ "maximum": 100000,
+ "minimum": -100000,
+ "type": "number"
+ },
+ "horizontalCenter": {
+ "maximum": 100000,
+ "minimum": -100000,
+ "type": "number"
+ },
+ "isAlignBottom": {
+ "type": "boolean"
+ },
+ "isAlignHorizontalCenter": {
+ "type": "boolean"
+ },
+ "isAlignLeft": {
+ "type": "boolean"
+ },
+ "isAlignRight": {
+ "type": "boolean"
+ },
+ "isAlignTop": {
+ "type": "boolean"
+ },
+ "isAlignVerticalCenter": {
+ "type": "boolean"
+ },
+ "left": {
+ "maximum": 100000,
+ "minimum": -100000,
+ "type": "number"
+ },
+ "right": {
+ "maximum": 100000,
+ "minimum": -100000,
+ "type": "number"
+ },
+ "top": {
+ "maximum": 100000,
+ "minimum": -100000,
+ "type": "number"
+ },
+ "verticalCenter": {
+ "maximum": 100000,
+ "minimum": -100000,
+ "type": "number"
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.Widget",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "brake": {
+ "maximum": 1,
+ "minimum": 0,
+ "type": "number"
+ },
+ "content": {
+ "additionalProperties": false,
+ "properties": {
+ "nodeKey": {
+ "minLength": 1,
+ "type": "string"
+ }
+ },
+ "required": [
+ "nodeKey"
+ ],
+ "type": "object"
+ },
+ "elastic": {
+ "type": "boolean"
+ },
+ "horizontal": {
+ "type": "boolean"
+ },
+ "inertia": {
+ "type": "boolean"
+ },
+ "vertical": {
+ "type": "boolean"
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.ScrollView",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "checkEvents": {
+ "items": {
+ "additionalProperties": false,
+ "properties": {
+ "componentId": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "customEventData": {
+ "maxLength": 1024,
+ "type": "string"
+ },
+ "handler": {
+ "pattern": "^[a-zA-Z][a-zA-Z0-9]{0,63}$",
+ "type": "string"
+ }
+ },
+ "required": [
+ "componentId",
+ "handler"
+ ],
+ "type": "object"
+ },
+ "maxItems": 8,
+ "type": "array"
+ },
+ "checkMark": {
+ "additionalProperties": false,
+ "properties": {
+ "componentType": {
+ "const": "cc.Sprite",
+ "type": "string"
+ },
+ "nodeKey": {
+ "minLength": 1,
+ "type": "string"
+ }
+ },
+ "required": [
+ "nodeKey",
+ "componentType"
+ ],
+ "type": "object"
+ },
+ "interactable": {
+ "type": "boolean"
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.Toggle",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "backgroundImage": {
+ "additionalProperties": false,
+ "properties": {
+ "assetUuid": {
+ "minLength": 1,
+ "type": "string"
+ }
+ },
+ "required": [
+ "assetUuid"
+ ],
+ "type": "object"
+ },
+ "editingDidBegan": {
+ "items": {
+ "additionalProperties": false,
+ "properties": {
+ "componentId": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "customEventData": {
+ "maxLength": 1024,
+ "type": "string"
+ },
+ "handler": {
+ "pattern": "^[a-zA-Z][a-zA-Z0-9]{0,63}$",
+ "type": "string"
+ }
+ },
+ "required": [
+ "componentId",
+ "handler"
+ ],
+ "type": "object"
+ },
+ "maxItems": 8,
+ "type": "array"
+ },
+ "editingDidEnded": {
+ "items": {
+ "additionalProperties": false,
+ "properties": {
+ "componentId": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "customEventData": {
+ "maxLength": 1024,
+ "type": "string"
+ },
+ "handler": {
+ "pattern": "^[a-zA-Z][a-zA-Z0-9]{0,63}$",
+ "type": "string"
+ }
+ },
+ "required": [
+ "componentId",
+ "handler"
+ ],
+ "type": "object"
+ },
+ "maxItems": 8,
+ "type": "array"
+ },
+ "editingReturn": {
+ "items": {
+ "additionalProperties": false,
+ "properties": {
+ "componentId": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "customEventData": {
+ "maxLength": 1024,
+ "type": "string"
+ },
+ "handler": {
+ "pattern": "^[a-zA-Z][a-zA-Z0-9]{0,63}$",
+ "type": "string"
+ }
+ },
+ "required": [
+ "componentId",
+ "handler"
+ ],
+ "type": "object"
+ },
+ "maxItems": 8,
+ "type": "array"
+ },
+ "maxLength": {
+ "maximum": 10000,
+ "minimum": 0,
+ "type": "integer"
+ },
+ "placeholder": {
+ "maxLength": 1000,
+ "type": "string"
+ },
+ "placeholderLabel": {
+ "additionalProperties": false,
+ "properties": {
+ "componentType": {
+ "const": "cc.Label",
+ "type": "string"
+ },
+ "nodeKey": {
+ "minLength": 1,
+ "type": "string"
+ }
+ },
+ "required": [
+ "nodeKey",
+ "componentType"
+ ],
+ "type": "object"
+ },
+ "string": {
+ "maxLength": 10000,
+ "type": "string"
+ },
+ "tabIndex": {
+ "maximum": 1000,
+ "minimum": 0,
+ "type": "integer"
+ },
+ "textChanged": {
+ "items": {
+ "additionalProperties": false,
+ "properties": {
+ "componentId": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "customEventData": {
+ "maxLength": 1024,
+ "type": "string"
+ },
+ "handler": {
+ "pattern": "^[a-zA-Z][a-zA-Z0-9]{0,63}$",
+ "type": "string"
+ }
+ },
+ "required": [
+ "componentId",
+ "handler"
+ ],
+ "type": "object"
+ },
+ "maxItems": 8,
+ "type": "array"
+ },
+ "textLabel": {
+ "additionalProperties": false,
+ "properties": {
+ "componentType": {
+ "const": "cc.Label",
+ "type": "string"
+ },
+ "nodeKey": {
+ "minLength": 1,
+ "type": "string"
+ }
+ },
+ "required": [
+ "nodeKey",
+ "componentType"
+ ],
+ "type": "object"
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.EditBox",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "content": {
+ "additionalProperties": false,
+ "properties": {
+ "nodeKey": {
+ "minLength": 1,
+ "type": "string"
+ }
+ },
+ "required": [
+ "nodeKey"
+ ],
+ "type": "object"
+ },
+ "direction": {
+ "anyOf": [
+ {
+ "const": 0,
+ "type": "number"
+ },
+ {
+ "const": 1,
+ "type": "number"
+ }
+ ]
+ },
+ "pageEvents": {
+ "items": {
+ "additionalProperties": false,
+ "properties": {
+ "componentId": {
+ "minLength": 1,
+ "type": "string"
+ },
+ "customEventData": {
+ "maxLength": 1024,
+ "type": "string"
+ },
+ "handler": {
+ "pattern": "^[a-zA-Z][a-zA-Z0-9]{0,63}$",
+ "type": "string"
+ }
+ },
+ "required": [
+ "componentId",
+ "handler"
+ ],
+ "type": "object"
+ },
+ "maxItems": 8,
+ "type": "array"
+ },
+ "pageTurningSpeed": {
+ "maximum": 60,
+ "minimum": 0,
+ "type": "number"
+ },
+ "scrollThreshold": {
+ "maximum": 1,
+ "minimum": 0,
+ "type": "number"
+ },
+ "sizeMode": {
+ "anyOf": [
+ {
+ "const": 0,
+ "type": "number"
+ },
+ {
+ "const": 1,
+ "type": "number"
+ }
+ ]
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.PageView",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "font": {
+ "additionalProperties": false,
+ "properties": {
+ "assetUuid": {
+ "minLength": 1,
+ "type": "string"
+ }
+ },
+ "required": [
+ "assetUuid"
+ ],
+ "type": "object"
+ },
+ "fontSize": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ },
+ "lineHeight": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ },
+ "maxWidth": {
+ "maximum": 100000,
+ "minimum": 0,
+ "type": "number"
+ },
+ "string": {
+ "maxLength": 10000,
+ "type": "string"
+ },
+ "useSystemFont": {
+ "type": "boolean"
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.RichText",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ },
+ {
+ "additionalProperties": false,
+ "properties": {
+ "properties": {
+ "additionalProperties": false,
+ "properties": {
+ "inverted": {
+ "type": "boolean"
+ },
+ "type": {
+ "anyOf": [
+ {
+ "const": 0,
+ "type": "number"
+ },
+ {
+ "const": 1,
+ "type": "number"
+ },
+ {
+ "const": 2,
+ "type": "number"
+ },
+ {
+ "const": 3,
+ "type": "number"
+ }
+ ]
+ }
+ },
+ "type": "object"
+ },
+ "type": {
+ "const": "cc.Mask",
+ "type": "string"
+ }
+ },
+ "required": [
+ "type"
+ ],
+ "type": "object"
+ }
+ ]
+ },
+ "maxItems": 13,
+ "type": "array"
+ },
+ "key": {
+ "pattern": "^[a-zA-Z][a-zA-Z0-9_-]{0,63}$",
+ "type": "string"
+ },
+ "name": {
+ "maxLength": 128,
+ "minLength": 1,
+ "type": "string"
+ },
+ "position": {
+ "additionalProperties": false,
+ "properties": {
+ "x": {
+ "maximum": 100000,
+ "minimum": -100000,
+ "type": "number"
+ },
+ "y": {
+ "maximum": 100000,
+ "minimum": -100000,
+ "type": "number"
+ },
+ "z": {
+ "maximum": 100000,
+ "minimum": -100000,
+ "type": "number"
+ }
+ },
+ "required": [
+ "x",
+ "y",
+ "z"
+ ],
+ "type": "object"
+ }
+ },
+ "required": [
+ "key",
+ "name"
+ ],
+ "type": "object"
+ }
+}Input schema / properties / params / properties / documentAdded value: +{
+ "additionalProperties": false,
+ "properties": {
+ "root": {
+ "$ref": "#/$defs/__schema0"
+ },
+ "version": {
+ "const": 1,
+ "type": "number"
+ }
+ },
+ "required": [
+ "version",
+ "root"
+ ],
+ "type": "object"
+}Input schema / properties / params / properties / planHashAdded value: +{
+ "minLength": 1,
+ "type": "string"
+}Input schema / properties / params / properties / treeRemoved value: -{
- "additionalProperties": {},
- "properties": {},
- "type": "object"
-}Input schema / properties / params / requiredPrevious value: -[
- "tree"
-]New value: +[
+ "parentId",
+ "document",
+ "planHash"
+]v0.1.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations declare destructiveHint: true, and the description adds a note about 'partial failure uses local compensation' – a behavioral detail not covered by annotations. However, this note is vague (what is 'local compensation'? what side effects occur?), and it does not disclose destructiveness or any other concrete effects. It adds minimal value beyond the annotation, but does not contradict it.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single sentence identical to the title. It is under-specified, not concise; it provides no front-loaded critical information and every word merely repeats what is already in the name. It fails to earn its place as a useful description.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the tool's complexity (6 parameters, nested document schema, destructive annotation, no output schema), the description is grossly inadequate. It does not explain the return value format (UUID mapping), the meaning of 'planned UI tree', or how partial failure compensation works. An agent cannot safely or correctly invoke this tool based on this description.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description must explain parameter meaning, but it provides none. It does not mention projectId, params, parentId, document, planHash, or any of the nested structures. Agents have no semantic guidance for constructing valid inputs.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
Tautological: description restates name/title.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
There is no guidance on when to use this tool versus alternatives. The description does not mention prerequisites, expected inputs (like planHash), or when to prefer this over related build or scene tools. An agent cannot determine the appropriate context from this description.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.