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Nappai Documentation

LangChain Hub

This component helps you create custom instructions (prompts) for Nappai’s AI assistant using ready-made templates from the LangChain Hub. Think of it as a library of helpful starting points for your AI tasks. You can choose a template and customize it to fit your specific needs.

Relationship with LangChain Hub

This component connects directly to the LangChain Hub, a repository of pre-built prompts. It uses your LangChain API key to access and download these prompts. This allows you to leverage the work of others and quickly build sophisticated prompts without starting from scratch.

Inputs

  • Your LangChain API Key: This is a special code that allows Nappai to access your LangChain Hub account and its prompts. You’ll need to get this key from your LangChain Hub account settings. Keep this key safe and secure; do not share it with anyone.
  • LangChain Hub Prompt: This is the name of the specific prompt template you want to use from the LangChain Hub. A default prompt is provided, but you can change it to select a different template. A refresh button is available to help you update the prompt selection.

Outputs

  • Build Prompt: This is the final, customized prompt created by the component. It’s ready to be used as input for other Nappai components that need instructions for the AI assistant. The output is a message containing the text of the prompt.

Usage Example

Let’s say you want to use a prompt from the LangChain Hub to summarize text. You would:

  1. Enter your LangChain API Key.
  2. Select the name of the text summarization prompt from the LangChain Hub in the “LangChain Hub Prompt” field. You can use the default or search for a specific one.
  3. The component will then generate a “Build Prompt” output, which you can then feed into a Nappai summarization component.

Templates

This component doesn’t use flow templates directly. It interacts with the LangChain Hub, which contains many different prompt templates. The configuration is simply selecting the desired prompt from the Hub.

Many Nappai components can use the “Build Prompt” output from this component. Here are a few examples:

  • OpenAI: Use the generated prompt to instruct OpenAI’s language model.
  • Google Generative AI: Use the generated prompt to instruct Google’s language model.
  • Summarizer: Use the generated prompt to create a summarization task.
  • Explain SQL results: Use the generated prompt to refine the instructions for explaining SQL query results.
  • And many more! The “Build Prompt” output is versatile and can be used with various AI-powered components in Nappai.

Tips and Best Practices

  • Keep your API key secure: Treat your LangChain API key like a password.
  • Explore the LangChain Hub: Browse the available prompts to find ones that suit your needs.
  • Customize prompts: Don’t be afraid to modify the selected prompt to fine-tune it for your specific use case.

Security Considerations

Protecting your LangChain API key is crucial. Never share it publicly or store it insecurely. Nappai’s secure input system helps protect your key, but best practices for secure key management should always be followed.