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LangGraph SDK 0.3.15 Ships with Metadata Filtering for Cron-Based Agent Workflows
LangGraph SDK version 0.3.15 released today (May 22, 2026) adds support for metadata filtering in cron search and count functionality, enabling developers to query and manage scheduled agent workflows by custom metadata tags. The release also bumps langchain-core to 1.4.0 and includes a fix for lc:2 envelope revival to default constructor in the checkpoint package (v4.1.1). While a minor release, metadata filtering for crons addresses a practical pain point for teams running periodic agent workflows at scale.
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