agentic-developmentlisted
Install: claude install-skill lciacci/tessera
# Agentic Development Skill
For building autonomous AI agents that perform multi-step tasks with tools.
**Sources:** [Claude Agent SDK](https://docs.anthropic.com/en/docs/agents-and-tools/claude-agent-sdk) | [Anthropic Claude Code Best Practices](https://www.anthropic.com/engineering/claude-code-best-practices) | [Pydantic AI](https://ai.pydantic.dev/) | [Google Gemini Agent Development](https://developers.googleblog.com/en/building-agents-google-gemini-open-source-frameworks/) | [OpenAI Building Agents](https://developers.openai.com/tracks/building-agents/)
---
## Framework Selection by Language
| Language/Framework | Default | Why |
|-------------------|---------|-----|
| **Python** | **Pydantic AI** | Type-safe, Pydantic validation, multi-model, production-ready |
| **Node.js / Next.js** | **Claude Agent SDK** | Official Anthropic SDK, tools, multi-agent, native streaming |
### Python: Pydantic AI (Default)
```python
from pydantic_ai import Agent
from pydantic import BaseModel
class SearchResult(BaseModel):
title: str
url: str
summary: str
agent = Agent(
'claude-sonnet-4-20250514',
result_type=list[SearchResult],
system_prompt='You are a research assistant.',
)
# Type-safe result
result = await agent.run('Find articles about AI agents')
for item in result.data:
print(f"{item.title}: {item.url}")
```
### Node.js / Next.js: Claude Agent SDK (Default)
```typescript
import Anthropic from "@anthropic-ai/sdk";
const client = new Anthropic(