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langbot-wiki-sync[bot] edited this page Jul 29, 2026 · 1 revision

Migration Guide

This tutorial highlights certain considerations. Please read the current version plugin tutorial first, then use this document as a reference for plugin migration.

Migrating from 3.x Supported Asynchronous Plugins

Note

Plugin characteristics:

  • Main time period: 2024.2 ~ 2025.8
  • Registration method: Using @handler decorators to register event listeners and @llm_func decorators to register content functions (tools) in the plugin class in main.py; all handler functions are asynchronous functions (async def)
  • Plugin and component registration method: Changed from the previous single plugin class decorator registration method to manifest file registration method. See Manifest File; and separated different types of components independently. For details, see Adding Components.
  • Message chain entities: Now refactored. The construction method of each message chain element now requires explicit passing of named parameters. See Message Platform Entities.
  • Event listeners: Provides backward compatibility, but no longer provides query: Query object in context. For details, see Pipeline Events.
  • Command components: Now refactored. See Command Components.

Migrating from 2.x and 3.x Supported Synchronous Plugins

Note

Plugin characteristics:

  • Main time period: 2023.1 ~ 2024.2
  • Registration method: Using @on decorators to register event listeners and @func decorators to register content functions (tools) in the plugin class in main.py; all handler functions are synchronous functions (def)
  • Synchronous to asynchronous: Plugin runtime has now changed to fully asynchronous (based on asyncio). Please change all plugin code involving IO operations to asynchronous writing.
  • For detailed content, please refer to the above 3.x asynchronous plugin migration guide.

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