Skills Pattern - Composable Agent Capabilities

The Skills Pattern organizes agent capabilities into self-contained, reusable modules that can be composed to handle complex tasks.

Overview

Pattern Description

Skills are specialized capability modules that encapsulate:

• Domain knowledge
• Tool access
• Execution logic
• Output formatting

An agent can invoke multiple skills to complete complex, multi-faceted tasks.

Components

Agent

• Purpose: Receives user requests and coordinates skill execution
• Key Responsibilities:
  • Understanding user intent
  • Selecting appropriate skills
  • Synthesizing skill outputs

Skill Router

• Purpose: Routes requests to appropriate skills
• Key Responsibilities:
  • Skill selection based on task requirements
  • Parallel skill execution when possible
  • Result aggregation and conflict resolution

Skills

• Purpose: Self-contained capability modules
• Characteristics:
  • Single responsibility
  • Well-defined inputs/outputs
  • Independent execution
  • Reusable across contexts

Skill Registry

• Purpose: Catalog of available skills
• Contains: Skill definitions, capabilities, and metadata

Example Skills

Code Skill

name: code
description: Write, analyze, and modify code
capabilities:
  - write_code
  - review_code
  - refactor
  - debug
tools:
  - file_read
  - file_write
  - run_tests
  - lint

Research Skill

name: research
description: Gather and synthesize information
capabilities:
  - web_search
  - document_analysis
  - fact_checking
  - summarization
tools:
  - search_web
  - read_document
  - extract_entities

Data Analysis Skill

name: data_analysis
description: Analyze and visualize data
capabilities:
  - statistical_analysis
  - visualization
  - trend_detection
  - reporting
tools:
  - query_database
  - run_python
  - create_chart

Skill Composition

Skills can be composed in several ways:

Skill Definition Schema

{
  "name": "skill_name",
  "description": "What this skill does",
  "triggers": ["keywords", "patterns"],
  "inputs": {
    "required": ["input1"],
    "optional": ["input2"]
  },
  "outputs": {
    "primary": "main_result",
    "artifacts": ["files", "charts"]
  },
  "tools": ["tool1", "tool2"],
  "dependencies": ["other_skill"]
}

When to Use

• Building agents with diverse capabilities
• Creating reusable capability modules
• Organizing complex agent architectures
• Enabling capability composition
• Supporting multi-domain tasks

Benefits

Related Patterns