Copilotkit

**Release Date: March 11, 2025**

Features and Enhancements

Today we're really excited to announce support for a new agent framework - CrewAI! Bring in Crew or Flow and chat with it with all of the CopilotKit features you've come to know and love baked in.
- **Frontend-Only Actions:** Allow restricting actions to the frontend, enhancing security and user control.
- **CrewAI Support:** Integrated CrewAI, making it an optional dependency for users who need additional AI collaboration features.
- **Support for New OpenAI Models:** Expanded compatibility with the latest OpenAI models, ensuring up-to-date AI performance and capabilities.

New examples

We've made a few new examples for you to give a try!
- **Fully Customizable Copilot UI Example:** Added an example demonstrating a fully customizable chat UI, offering greater flexibility in user interface design.
- **New Form-Filling Copilot Example:** Introduced an example showcasing CopilotKit's capabilities for assisting with form-filling tasks, improving automation efficiency.
- **State Machine Example:** Added a new example illustrating state machine implementation, along with supporting features for structured state management.

Bug Fixes
- **Typed Interrupt Event Values:** Improved type safety by ensuring interrupt event values are correctly typed, enhancing developer experience.
- **Memoization in useCoAgent:** Implemented memoization in internal functions to improve performance and avoid redundant computations.
- **SQLite Upgrade for ChromaDB Compatibility:** Upgraded SQLite3 to ensure compatibility with ChromaDB, fixing integration issues.
- **Error Handling for Unparsable JSON:** Improved error handling to provide fallback mechanisms when encountering unparsable JSON data.
- **Runtime Execution Fixes:** Fixed execution issues related to runtime set backend action handlers, improving overall stability.
- **LangSmith API Key Handling:** Prevented failures when the LangSmith API key is missing, improving resilience.
- **Interrupt Condition Simplification:** Simplified LangGraph interrupt condition definitions for easier configuration.
- **Dependency Fixes:** Addressed missing dependencies and validation issues, including the addition of `class-validator` for improved form handling.

Documentation Updates

- **LangGraph Input/Output Schema:** Added detailed documentation on input and output schema support in LangGraph, helping developers integrate custom workflows.
- **Copilot Cloud Link in Coagents Quickstart:** Updated coagents quickstart documentation with a direct link to Copilot Cloud for improved accessibility.
- **Updated AI Behavior Guide:** Revised documentation detailing AI behavior, helping developers fine-tune interactions.
- **Frontend vs Backend Data Connection Guide:** Split "Connect Your Data" documentation into frontend and backend sections for better clarity.
- **Customize UI Docs Update:** Improved the structure and content of the UI customization guide, including better iconography and component explanations.

Contributors
- mme
- NathanTarbert
- tylerslaton
- ranst91
- suhasdeshpande
- ataibarkai
- Abubakar-01
- mosesoak

**Release Date: February 28, 2025**

Features and Enhancements

- **Configurable LangGraph Execution:** Introduced the ability to execute LangGraph with user-defined configurations, allowing for more flexible and tailored workflows.

- **Frontend-Only Action Restriction:** Added support to restrict certain actions to the frontend, enhancing security and control over client-side operations.

- **New Hooks for Enhanced Functionality:** Introduced `useCopilotAdditionalInstructions` hook and added an available property to `useCopilotReadable` for better state management and control.

Bug Fixes

- **Typed Interrupt Event Values**: Provided the ability to type interrupt event values, improving type safety and developer experience.

- **Memoization in Internal Functions:** Implemented memoization in `useCoAgent` internal functions to enhance performance and prevent unnecessary re-renders.

- **Simplified LangGraph Interrupt Conditions:** Simplified condition options for LangGraph interrupts, making it more straightforward to define and manage interrupt conditions.

- **Dependency Updates:** Updated dependencies across various packages, including adding `class-validator` to ensure proper validation mechanisms are in place.

Documentation

- **Input and Output Schema Documentation**: Added comprehensive documentation detailing the input and output schemas of LangGraph, aiding developers in understanding and implementing custom configurations.

- **Hook API Reference:** Documented the Hook API reference, providing clear guidelines and examples for utilizing the new and existing hooks effectively.

Contributors

- mme
- NathanTarbert
- tylerslaton
- savarbhasin
- suhasdeshpande
- ranst91
- Any97Cris
- Jamboujams
- ErcinDedeoglu
- md-abid-hussain
- piyushchauhan2011
- JoesSon72
- deltacodepl
- neso123456
- AabedSagar

**Release Date: February 14, 2025**

CoAgents v0.5 official Release 🚀

Enhanced Message Synchronization

- The integration between LangGraph agent messages and CopilotKit messages has been streamlined to provide seamless, automatic synchronization. This eliminates the need for manual message handling and ensures perfect consistency across your application.

Automated Tool Call Management

- Tool calls from LangGraph agents are now automatically emitted by default, simplifying the development workflow. If a frontend component isn't configured to handle specific tool calls, they will gracefully no-op without causing errors. This makes development more flexible and reduces boilerplate code.

Universal Tool Call Rendering

- A new "catch-all" rendering system allows developers to define default generative UI rendering functions that handle any agent tool calls. This provides a safety net for undefined tool calls and ensures a consistent user experience across your application.

Improved Message History Functionality

- Message history management has been simplified through the introduction of thread-based retrieval. By setting the threadId property on the <CopilotKit> component, developers can easily access and load complete message histories. This enables more sophisticated conversation management and persistent chat experiences.



Bug Fixes

- Error Resolver Internal Usage: Resolved issues with the internal usage of the error resolver to ensure consistent error handling across the application.
Contributors

mme

**Release Date: February 13, 2025**

Bug Fixes

- Input Handling During Interrupts: Improved input handling to ensure inputs are properly disabled when an interrupt is active.

- JavaScript Coagents Starter Documentation: Enhanced documentation for the JavaScript Coagents Starter, providing clearer setup and usage instructions.

- Warning System for Coagent State and Action Duplication: Introduced a new warning system to detect and alert on coagent state render duplication and action duplication.

- Error Handling System Enhancement: Improved the error handling system to allow non-CopilotKit errors to propagate correctly to consumer applications.

Contributors

- mme

- suhasdeshpande

- NathanTarbert

- tylerslaton

- ranst91

Features and Enhancements
- Added TypeScript guide for Node HITL implementation
- Updated CoAgents Starter README.md to include the JS-SDK (1341)

Bug Fixes
- Fixed concurrency issues (1350)
- Improved version mismatch detection and alerts (1349)
- Added warning when version mismatch is not expected to error out
- Enhanced error messages with additional information
- Used langgraph metadata to get node name (1352)
- Fixed dependencies by updating copilotkit examples to v1.5.17 (1347)

Documentation
- Added TypeScript guide for node-hitl (1354)
- Fixed typo in emit message guide (1348)

Internal Changes
- Added **pycache** to the codebase

Contributors
- NathanTarbert
- tylerslaton
- ranst91
- mme
- suhasdeshpande

Patch Changes

- 1fc3902: - Revert "fix: detect and alert on version mismatch (1333)"

This reverts commit 48b7c7b1bd48ced82ffb9a00d6eddc1f7581e0c1.