/langchain-tools

name: langchain-tools
description: LangChain tool creation and integration utilities for agent systems
allowed-tools:
  - Read
  - Write
  - Edit
  - Bash
  - Glob
  - Grep
graph:
  domains: [domain:software-engineering]
  specializations: [specialization:ai-agents-conversational]
  skillAreas: [skill-area:tool-use, skill-area:tool-service-integration-agents]
  roles: [role:ml-engineer, role:backend-engineer]
  workflows: [workflow:feature-development, workflow:ml-model-lifecycle]
  topics: [topic:api-design]

LangChain Tools Skill

Capabilities

• Create custom LangChain tools with proper schemas
• Integrate existing tools and APIs
• Design tool descriptions for optimal LLM understanding
• Implement structured tool inputs with Pydantic
• Handle tool errors and fallbacks
• Create tool chains and pipelines

Target Processes

• custom-tool-development
• function-calling-agent

Implementation Details

Tool Creation Patterns

1. **@tool decorator**: Simple function-based tools 2. **StructuredTool**: Tools with complex input schemas 3. **BaseTool subclass**: Full control over tool behavior 4. **Tool from functions**: Dynamic tool creation

Configuration Options

• Tool name and description
• Input schema (args_schema)
• Return type specification
• Error handling strategy
• Async/sync execution modes

Best Practices

• Clear, action-oriented descriptions
• Explicit input parameter documentation
• Proper error messages for LLM understanding
• Idempotent operations where possible

Dependencies

• langchain-core
• pydantic