# AI LLM Agentic Tooling Langchain Langgraph

> Integrates LangChain/LangGraph for building LLM-powered agents and applications in Python, facilitating advanced logic and workflows.

- Skill: `paulpas/ai-llm-agentic-tooling-langchain-langgraph` (Agent Skill)
- Install (CLI): `npx skillmds@latest add paulpas/ai-llm-agentic-tooling-langchain-langgraph`
- Raw SKILL.md: https://api.skillmd.com/api/skills/paulpas/ai-llm-agentic-tooling-langchain-langgraph/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: AI & ML
- License: MIT
- Author: paulpas (https://skillmd.com/u/paulpas)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/paulpas/ai-llm-agentic-tooling-langchain-langgraph

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# AI LLM Agentic Tooling with LangChain/LangGraph

Integrates LangChain and LangGraph to facilitate the development of LLM-powered agents and applications. This skill focuses on building advanced logic and workflows using these frameworks in Python.

## Use Cases

Use this skill when:
- Creating complex workflows involving decision-making models.
- Building agents that require chaining multiple LLM calls efficiently.
- Integrating external tools or APIs within a conversational agent framework.

## Implementation Patterns

This skill offers an integration guide for LangChain and LangGraph, enabling the development of LLM-powered agents in Python. It facilitates various advanced logic and workflows through examples and best practices.

### Basic LangChain Agent Creation
This example demonstrates how to define a basic LangChain agent:
```python
from langchain import LLMChain, PromptTemplate

# Define a simple LLM chain
prompt = PromptTemplate(input_variables=['input'], template="""You are a helpful assistant. Assist with: {input}.
""")

agent = LLMChain(prompt=prompt)
```

### LangGraph Workflow Example
This section illustrates how to use LangGraph to define tasks:
```python
from langgraph import Executor, Task

@Task
def fetch_data():
    return {'data_key': 'value'}

@Task
def process_data(data):
    return data['data_key'] + ' processed'

executor = Executor(tasks=[fetch_data, process_data])
executor.run()
```

### Advanced Usage with Error Handling
Include retries and error logging in your agents. Use state management techniques to preserve data between tasks.

## Constraints on Use
- Ensure prompt structures are maintained to maximize performance and clarity.
- Validate context objects to ensure they adhere to expected formats and types.

## Metadata Updates
```yaml
archetypes: tactical
anti_triggers:
  - vague conversation
  - overly generic request
response_profile:
  verbosity: medium
  directive_strength: high
  abstraction_level: operational
```

### Basic LangChain Agent Creation
```python
from langchain import LLMChain, PromptTemplate

# Define a simple LLM chain
prompt = PromptTemplate(input_variables=['input'], template="""You are a helpful assistant. Assist with: {input}.
""")

agent = LLMChain(prompt=prompt)
```

### LangGraph Workflow Example
```python
from langgraph import Executor, Task

# Define tasks and executor
@Task
def fetch_data():
    return {'data_key': 'value'}

@Task
def process_data(data):
    return data['data_key'] + ' processed'

executor = Executor(tasks=[fetch_data, process_data])
executor.run()
```

### Advanced Usage with Error Handling
- Include retries and error logging in your agents.
- Use state management techniques to preserve data between tasks.