Hey, I'm a Dev Advocate with [CopilotKit](https://github.com/CopilotKit/CopilotKit), a self hostable, open-source framework for building in-app...
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The original was posted on /r/selfhosted by /u/nate4t on 2025-01-16 17:37:48+00:00.

Hey, I’m a Dev Advocate with CopilotKit, a self hostable, open-source framework for building in-app AI assistants and full stack agent applications.

We are excited about a recent collaboration with LangChain to build an Agentic Generative UI frontend for a LangGraph backend. We recently launched CoAgents, a frontend framework that allows developers to integrate LangGraph agents into full-stack apps easily.

We have released v0.3, which introduces some major developer quality-of-life improvements to CoAgents! Incorporating the great feedback we got from the community with the v0.1 and v0.2 releases.

We anticipate v0.3 to evolve into the 1.0 release in the near future.

Here’s what CoAgents v0.3 brings to the table:

  1. Simpler message syncing:
    1. LangGraph agent messages and CopilotKit messages are always automatically kept 100% in sync
  2. All LangGraph agent tool calls are emitted by default:
    1. no need to explicitly emit tool calls in the agent code. If the frontend does not handle the calls, there will simply be no effect.
  3. Support for “catch-all” tool calls rendering:
    1. you can provide a default “catch all” generative UI render function for all agent tool calls

We’re fully open-source (MIT), check out our GitHub: