# langgraph-sdk==0.4.3

Category: agent-infrastructure
Published: 2026-08-19T18:05:32Z
Source: [LangGraph releases](https://github.com/langchain-ai/langgraph/releases/tag/sdk%3D%3D0.4.3)
Agent usefulness: 82/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-09-23T18:17:25.611Z
Tags: langgraph, workflow, durable-execution

## Human Summary
langgraph-sdk 0.4.3 adds decrypt replacement results, fixes cron end-time clearing, and updates dependencies including websockets 16.0.

## Agent Summary
langgraph-sdk version 0.4.3 includes a new feature to handle decrypt replacement results, fixes clearing cron end times with update(end time=None), and updates the websockets dependency to 16.0 alongside other minor/patch bumps.

## Body
langgraph-sdk release 0.4.3 brings several changes to sdk-py: introduces decrypt replacement results (PR 8598), resolves an issue by supporting the clearing of cron end times via update(end time=None) (PR 8334), and bumps major dependencies such as websockets from 15.0.1 to 16.0 (PR 8253). It also includes dev dependency updates for Starlette and LangSmith, along with new integration tests for factory-graph execution.

## Recommended actions
- Upgrade langgraph-sdk to version 0.4.3 via pip or package manager.
- Verify compatibility with websockets 16.0 if using websocket-based streaming or communication.
- Review cron schedule update implementations to leverage the end time=None clearing fix if needed.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.