> ## Documentation Index
> Fetch the complete documentation index at: https://ikun.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ChromaDB 集成

## 代码

```python cookbook/agent_concepts/vector_dbs/chroma_db.py theme={null}
from agno.agent import Agent
from agno.knowledge.pdf_url import PDFUrlKnowledgeBase
from agno.vectordb.chroma import ChromaDb

# 初始化 ChromaDB
vector_db = ChromaDb(collection="recipes", path="tmp/chromadb", persistent_client=True)

# 创建知识库
knowledge_base = PDFUrlKnowledgeBase(
    urls=["https://agno-public.s3.amazonaws.com/recipes/ThaiRecipes.pdf"],
    vector_db=vector_db,
)

knowledge_base.load(recreate=False)  # 首次运行后注释掉此行

# 创建并使用 Agent
agent = Agent(knowledge=knowledge_base, show_tool_calls=True)
agent.print_response("Show me how to make Tom Kha Gai", markdown=True)
```

## 用法

<Steps>
  <Snippet file="create-venv-step.mdx" />

  <Step title="安装库">
    ```bash theme={null}
    pip install -U chromadb pypdf openai agno
    ```
  </Step>

  <Step title="运行 Agent">
    <CodeGroup>
      ```bash Mac theme={null}
      python cookbook/agent_concepts/vector_dbs/chroma_db.py
      ```

      ```bash Windows theme={null}
      python cookbook/agent_concepts/vector_dbs/chroma_db.py
      ```
    </CodeGroup>
  </Step>
</Steps>