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langgraph

vsdk==0.4.0 scope: sdk Feature

This release adds 7 notable features for engineering teams evaluating rollout.

✓ No known CVEs patched
Read the diff → Tool health → What is this tool? →

✓ No known CVEs patched in this version

Topics

agents ai ai-agents chatgpt deepagents enterprise
+9 more
gemini generative-ai langchain langgraph llm multiagent openai pydantic python

Summary

AI summary

Adds multiple new synchronous and asynchronous streaming features for threads, subgraphs, and message handling.

Changes in this release

Feature Low

Add thread stream helpers

Add thread stream helpers

Source: llm_adapter@2026-05-28

Confidence: high

Feature Low

Wire websocket stream selection

Wire websocket stream selection

Source: llm_adapter@2026-05-28

Confidence: high

Feature Low

Add websocket stream transports

Add websocket stream transports

Source: llm_adapter@2026-05-28

Confidence: high

Feature Low

Harden streaming reconnects

Harden streaming reconnects

Source: llm_adapter@2026-05-28

Confidence: high

Feature Low

Add sync scoped subgraphs

Add sync scoped subgraphs

Source: llm_adapter@2026-05-28

Confidence: high

Feature Low

Add sync messages and tool calls

Add sync messages and tool calls

Source: llm_adapter@2026-05-28

Confidence: high

Feature Low

Add sync thread stream core

Add sync thread stream core

Source: llm_adapter@2026-05-28

Confidence: high

Feature Low

Add async stream reconnect support

Add async stream reconnect support

Source: llm_adapter@2026-05-28

Confidence: high

Feature Low

Add scoped subgraph handles

Add scoped subgraph handles

Source: llm_adapter@2026-05-28

Confidence: high

Feature Low

Add messages and tool call projections

Add messages and tool call projections

Source: llm_adapter@2026-05-28

Confidence: high

Feature Low

Add output, values, and controller extraction

Add output, values, and controller extraction

Source: granite4.1:30b@2026-05-28-audit

Confidence: low

Feature Low

Wire lifecycle state and output prerequisites

Wire lifecycle state and output prerequisites

Source: granite4.1:30b@2026-05-28-audit

Confidence: low

Feature Low

Add shared stream subscriptions

Add shared stream subscriptions

Source: granite4.1:30b@2026-05-28-audit

Confidence: low

Feature Low

Add v3 streaming primitives and SSE transport

Add v3 streaming primitives and SSE transport

Source: granite4.1:30b@2026-05-28-audit

Confidence: low

Full changelog

Changes since sdk==0.3.15

  • release(sdk-py): 0.4.0 (#7923)
  • feat(sdk-py): add thread stream helpers (#7833)
  • feat(sdk-py): wire websocket stream selection (#7832)
  • feat(sdk-py): add websocket stream transports (#7830)
  • feat(sdk-py): harden streaming reconnects (#7829)
  • feat(sdk-py): add sync scoped subgraphs (#7828)
  • feat(sdk-py): add sync messages and tool calls (#7827)
  • feat(sdk-py): add sync thread stream core (#7826)
  • feat(sdk-py): add async stream reconnect support (#7825)
  • feat(sdk-py): add scoped subgraph handles (#7824)
  • feat(sdk-py): add messages and tool call projections (#7823)
  • feat(sdk-py): add output, values, and controller extraction (#7822)
  • feat(sdk-py): wire lifecycle state and output prerequisites (#7821)
  • feat(sdk-py): add shared stream subscriptions (#7820)
  • feat(sdk-py): add async thread stream skeleton (#7819)
  • feat(sdk-py): add v3 streaming primitives and SSE transport (#7818)
  • chore(langgraph): bump version to 1.2.2 (#7914)

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About langgraph

Build resilient language agents as graphs.

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Beta — feedback welcome: [email protected]