Class: Tool

Definition for a tool the client can call.

 classDiagram
    class Tool
    click Tool href "../Tool/"
      HasMeta <|-- Tool
        click HasMeta href "../HasMeta/"
      HasName <|-- Tool
        click HasName href "../HasName/"
      HasIcons <|-- Tool
        click HasIcons href "../HasIcons/"

      Tool : _meta





        Tool --> "0..1" MetaObject : _meta
        click MetaObject href "../MetaObject/"



      Tool : annotations





        Tool --> "0..1" ToolAnnotations : annotations
        click ToolAnnotations href "../ToolAnnotations/"



      Tool : description

      Tool : execution





        Tool --> "0..1" ToolExecution : execution
        click ToolExecution href "../ToolExecution/"



      Tool : icons





        Tool --> "*" Icon : icons
        click Icon href "../Icon/"



      Tool : inputSchema





        Tool --> "1" JsonSchema : inputSchema
        click JsonSchema href "../JsonSchema/"



      Tool : name

      Tool : outputSchema





        Tool --> "0..1" JsonSchema : outputSchema
        click JsonSchema href "../JsonSchema/"



      Tool : title

Inheritance

Tool [ HasMeta HasName HasIcons]

Slots

Name	Cardinality and Range	Description	Inheritance
annotations	0..1 ToolAnnotations	Optional additional tool information	direct
execution	0..1 ToolExecution	Execution-related properties for this tool	direct
description	0..1 String	A human-readable description	direct
inputSchema	1 JsonSchema	A JSON Schema object defining the expected parameters for the tool	direct
outputSchema	0..1 JsonSchema	An optional JSON Schema object defining the structure of the tool's output	direct
_meta	0..1 MetaObject	Optional metadata object	HasMeta
name	1 String	Intended for programmatic or logical use, but used as a display name in past ...	HasName
title	0..1 String	Intended for UI and end-user contexts — optimized to be human-readable and ea...	HasName
icons	* Icon	Optional set of sized icons that the client can display in a user interface	HasIcons

Usages

used by	used in	type	used
CreateMessageRequestParams	tools	range	Tool
ListToolsResult	tools	range	Tool

Identifier and Mapping Information

Schema Source

from schema: https://w3id.org/lmodel/mcp

Mappings

Mapping Type	Mapped Value
self	mcp:Tool
native	mcp:Tool

LinkML Source

Direct

name: Tool
description: Definition for a tool the client can call.
from_schema: https://w3id.org/lmodel/mcp
mixins:
- HasMeta
- HasName
- HasIcons
slots:
- annotations
- execution
- description
- inputSchema
- outputSchema
slot_usage:
  annotations:
    name: annotations
    description: Optional additional tool information.
    range: ToolAnnotations
    inlined: true
  execution:
    name: execution
    description: Execution-related properties for this tool.
    range: ToolExecution
    inlined: true
  name:
    name: name
    required: true
  inputSchema:
    name: inputSchema
    required: true

Induced

name: Tool
description: Definition for a tool the client can call.
from_schema: https://w3id.org/lmodel/mcp
mixins:
- HasMeta
- HasName
- HasIcons
slot_usage:
  annotations:
    name: annotations
    description: Optional additional tool information.
    range: ToolAnnotations
    inlined: true
  execution:
    name: execution
    description: Execution-related properties for this tool.
    range: ToolExecution
    inlined: true
  name:
    name: name
    required: true
  inputSchema:
    name: inputSchema
    required: true
attributes:
  annotations:
    name: annotations
    description: Optional additional tool information.
    from_schema: https://w3id.org/lmodel/mcp
    rank: 1000
    alias: annotations
    owner: Tool
    domain_of:
    - HasAnnotations
    - Tool
    range: ToolAnnotations
    inlined: true
  execution:
    name: execution
    description: Execution-related properties for this tool.
    from_schema: https://w3id.org/lmodel/mcp
    rank: 1000
    alias: execution
    owner: Tool
    domain_of:
    - Tool
    range: ToolExecution
    inlined: true
  description:
    name: description
    description: A human-readable description.
    from_schema: https://w3id.org/lmodel/mcp
    rank: 1000
    slot_uri: dct:description
    alias: description
    owner: Tool
    domain_of:
    - Implementation
    - ResourceLink
    - Resource
    - ResourceTemplate
    - PromptArgument
    - Prompt
    - JsonSchema
    - Tool
    - StringSchema
    - NumberSchema
    - BooleanSchema
    - UntitledSingleSelectEnumSchema
    - TitledSingleSelectEnumSchema
    - UntitledMultiSelectEnumSchema
    - TitledMultiSelectEnumSchema
    - LegacyTitledEnumSchema
    - GetPromptResult
    range: string
  inputSchema:
    name: inputSchema
    description: A JSON Schema object defining the expected parameters for the tool.
    from_schema: https://w3id.org/lmodel/mcp
    rank: 1000
    alias: inputSchema
    owner: Tool
    domain_of:
    - Tool
    range: JsonSchema
    required: true
  outputSchema:
    name: outputSchema
    description: An optional JSON Schema object defining the structure of the tool's
      output.
    from_schema: https://w3id.org/lmodel/mcp
    rank: 1000
    alias: outputSchema
    owner: Tool
    domain_of:
    - Tool
    range: JsonSchema
  _meta:
    name: _meta
    description: Optional metadata object.
    from_schema: https://w3id.org/lmodel/mcp
    rank: 1000
    alias: _meta
    owner: Tool
    domain_of:
    - HasMeta
    range: MetaObject
  name:
    name: name
    description: Intended for programmatic or logical use, but used as a display name
      in past specs or fallback (if title is not present).
    from_schema: https://w3id.org/lmodel/mcp
    rank: 1000
    slot_uri: schema:name
    alias: name
    owner: Tool
    domain_of:
    - HasName
    - ToolUseContent
    - Root
    - CompletionArgument
    - SchemaProperties
    - ElicitationContent
    - ModelHint
    - CallToolRequestParams
    - GetPromptRequestParams
    range: string
    required: true
  title:
    name: title
    description: Intended for UI and end-user contexts — optimized to be human-readable
      and easily understood.
    from_schema: https://w3id.org/lmodel/mcp
    rank: 1000
    slot_uri: dct:title
    alias: title
    owner: Tool
    domain_of:
    - HasName
    - ToolAnnotations
    - EnumOption
    - JsonSchema
    - StringSchema
    - NumberSchema
    - BooleanSchema
    - UntitledSingleSelectEnumSchema
    - TitledSingleSelectEnumSchema
    - UntitledMultiSelectEnumSchema
    - TitledMultiSelectEnumSchema
    - LegacyTitledEnumSchema
    range: string
  icons:
    name: icons
    description: Optional set of sized icons that the client can display in a user
      interface.
    from_schema: https://w3id.org/lmodel/mcp
    rank: 1000
    alias: icons
    owner: Tool
    domain_of:
    - HasIcons
    range: Icon
    multivalued: true
    inlined: true
    inlined_as_list: true