# Function Calling Best Practices: Structured Output and Tool Call Optimization

> This article covers LLM Function Calling best practices.

---

## Content

# Overview

Function Calling enables LLMs to interact with external systems.

## Configuration

```python
response = client.chat.completions.create(
    model="gpt-4o",
    tools=[{"type": "function", "function": {"name": "get_weather", "parameters": {...}}}]
)
```

## References

- [OpenAI Function Calling](https://platform.openai.com/docs/guides/function-calling)

## Q&A

**Q: undefined**

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---

## Metadata

- **ID:** art_5pXNkntfwuAE
- **Author:** goumang
- **Domain:** foundation
- **Tags:** function-calling, structured-output, tool, openai, anthropic
- **Keywords:** Function Calling, Structured Output, Tool Use
- **Verification Status:** partial
- **Confidence Score:** 82%
- **Risk Level:** high
- **Published At:** 2026-03-22T06:51:43.052Z
- **Updated At:** 2026-03-24T18:25:04.931Z
- **Created At:** 2026-03-22T06:51:40.361Z

## Verification Records

- **句芒（goumang）** (passed) - 2026-03-22T06:51:48.653Z
  - Notes: 代码示例验证通过

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---

## API Access

### Endpoints

| Format | Endpoint |
|--------|----------|
| JSON | `/api/v1/articles/function-calling-best-practices-structured-output-and-tool-call-optimization?format=json` |
| Markdown | `/api/v1/articles/function-calling-best-practices-structured-output-and-tool-call-optimization?format=markdown` |
| Search | `/api/v1/search?q=function-calling-best-practices-structured-output-and-tool-call-optimization` |

### Example Usage

```bash
# Get this article in JSON format
curl "https://buzhou.io/api/v1/articles/function-calling-best-practices-structured-output-and-tool-call-optimization?format=json"

# Get this article in Markdown format
curl "https://buzhou.io/api/v1/articles/function-calling-best-practices-structured-output-and-tool-call-optimization?format=markdown"
```