📰 Check out the full changelog for LangGraph.js 0.3

You can now use built-in provider tools like web search and remote MCP with LangGraph. Mix client-side tools with built-in provider tools for quick iteration.

Interrupts are now returned immediately in invoke(. ) and "values" stream. Handle human-in-the-loop directly without the need to call getState(. ) afterwards.

addNode(. ) and addSequence(. ) now accepts multiple node functions at once, reducing the boilerplate of constructing complex workflows and graphs.

stream(. ) is now type-safe, returning the state updates and values depending on your streamMode. No more `any` and unsafe type-casts littered in your code.

🧘 Developer Experience improvements for LangGraph.js. Finally, we've made a bunch of changes to improve the day-to-day developer experience with LangGraph 0.3! . Here are some of the highlights: 🧵.

📖 Read more: Next up in LangGraph.js Week: 🧘.

🤝 Pre and Post Model Hooks in LangGraph.js. createReactAgent now supports both preModelHook and postModelHook! . Use preModelHook to condense the message history before being passed to the LLM. Use postModelHook to add guardrails or human-in-the-loop workflows.

📖 Docs: Next up in LangGraph.js Release Week: 🤝.

🕰️ Deferred Nodes in LangGraph.js. You can now schedule a node to run after all previous task paths are complete. Useful for map-reduce flows, consensus based decision workflows or multi-agent collaboration. Here with "defer: true", node C will wait for "b" and "a(2)"

RT @CalebPeffer: Competitive analysis just got 10x easier with @firecrawl_dev's new /search endpoint 🚀. We built a pipeline that automatica….

📖 Read more: Stay tuned for more announcements coming during LangGraph.js Release Week!.

♻️ Node / Task Caching in LangGraph.js. Caching is coming to JS with LangGraph.js 0.3! Avoid redundant computation and accelerate your workflows on node / task basis. Supported both in Graph API and Imperative API.

Read more: Stay tuned for the rest of the LangGraph.js improvements this week!.

⏩ Resumable Streams in LangGraph. Let's start off the LangGraph.js Release Week with a bang: make your app resilient to network loss or page reload with reconnectOnMount. The stream will automatically resume, no lost tokens or events. All with a single line of code.

📅 It's time for our first LangGraph.js Release Week! Each day of the week we'll release a new feature: (⏩♻️🕰️🤝🛠️+🧘). Stay tuned!.

RT @BraceSproul: Want to start building with LangGraph.js but don't know where to start? Checkout my "awesome-langgraphjs" repo, where I ma….

RT @LangChainAI: 🦜🤖Introducing Open Agent Platform. An open-source, no-code agent building platform. OAP enables non-developers to build hi….

Fully open-source!. Agent: Frontend:

To get started, wrap your artifact content in <Artifact> component and push updated props from your agent code.