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Plugins consist of one or more components that provide different functionalities to LangBot. Currently supported component types include:
  • Event Listeners (EventListener): Listen to events during pipeline execution and modify context or pipelines.
  • Commands (Command): Triggered by user command messages starting with ! (or other configured prefixes).
  • Tools (Tool): Called by LLMs during execution of LangBot’s built-in Local Agent.
  • Knowledge Engines (KnowledgeEngine): Provide knowledge base indexing and retrieval capabilities for LangBot, managing document ingestion, retrieval, and deletion.
  • Parsers (Parser): Parse binary files such as PDF, Word, etc. into structured text before document ingestion, for use by Knowledge Engines.

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Adding Components

Execute the command in the plugin directory: 
lbp comp <component_type>
For example, to add an event listener: 
lbp comp EventListener
Follow the prompts to enter the component configuration (if any). 
➜  HelloPlugin > lbp comp EventListener
Generating component EventListener...
Component EventListener generated successfully.
组件 EventListener 生成成功。
➜  HelloPlugin >

.
├── assets
│   └── icon.svg
├── components
│   ├── __init__.py
│   └── event_listener
│       ├── __init__.py
│       ├── default.py
│       └── default.yaml
├── main.py
├── manifest.yaml
├── README.md
└── requirements.txt
At the same time, component discovery configuration will be added to the plugin’s manifest.yaml:
...
components:
    EventListener:
      fromDirs:
      - path: components/event_listener/
...
To remove components, you can delete the corresponding information manually.

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Component Types

For detailed usage of each component, please refer to: