Register async lifecycle callbacks and context hooks for Renfield plugins.
npx skills add https://github.com/ebongard/renfield --skill add-hook
Please help me install this Agent Skill. Skill: add-hook Source: https://github.com/ebongard/renfield/tree/main/.claude/skills/add-hook Command: npx skills add https://github.com/ebongard/renfield --skill add-hook
Enables developers to extend Renfield by registering asynchronous callbacks at well-defined lifecycle and message insertion points so external packages can inject context, post-process messages, add API routes, or register agent tools without modifying core code.
Create an async register() that calls register_hook for the events you need and set the PLUGIN_MODULE environment variable to my_plugin.hooks:register so Renfield loads your plugin at startup.
High-intent search queries and answers about installing and using this skill.
To add async plugin hooks, register asynchronous callbacks at lifecycle events like startup or post_message so external packages can inject context and register tools without modifying core code. Use a module:callable loader to mount plugins dynamically.
Injecting additional LLM context during chat retrieval is possible by registering a retrieve_context hook that returns a string or None, enabling external data sources to seamlessly augment the agent's prompt without core code modifications.
Register custom agent tools and mount API routes asynchronously by hooking into the register_tools and register_routes lifecycle events, allowing external packages to extend FastAPI routers and agent capabilities through isolated async callbacks.
The best way to post-process chat messages for analytics is using fire-and-forget post_message hooks, which execute asynchronously after message delivery to run knowledge extraction or moderation without blocking the primary chat response.
You need to set the PLUGIN_MODULE environment variable to a module:callable format pointing to your async register function, ensuring the application loads your plugin and its hooks safely at startup with isolated error handling.
Retrieve_context hooks fail to inject context if they do not return a string or None as required, or if underlying plugin errors are silently suppressed by the isolated error handling semantics designed to prevent core application crashes.
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