Data and AI releases

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prefect 3.6.10 - Five Bugs Walked Into A Bar And None Of Them Left

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3.6.10 - Five Bugs Walked Into A Bar And None Of Them Left Released on January 08, 2026 Enhancements ➕➕ Add prefect automation update CLI command Add upserting global concurrency limit decay Bug Fixes 🐞 Fix AttributeError in Consumer.cleanup() for non-memory brokers Fix exception_to_crashed_state_sync failing without async backend Fix MockValSer...

MCPSecurityPostgresDeveloper tools

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Also shipped Jan 8, 2026Prefect in January 2026 →

Play Games While Agent Runners Do the Work

While Agent Runners take care of tasks on your site, you can now play games right in the UI. We've brought the same beloved build-time games to the Agent Runner page, so you can flip tiles, plan snake, install other games, or even create your own while your agent runs in the background. A little delight, now everywhere you wait.

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Prerender.io support available as new extension

The third-party Prerender.io service for advanced prerendering is now available as an extension for all Netlify customers. Previously, you needed a Netlify Pro plan or higher to set up Prerender.io with Netlify's legacy in-app prerendering feature. Prerender.io offers advanced configuration options and the Prerender.io dashboard.

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More from PrefectEvery Prefect release →

Prefect 3.6.11 - It's my generation, baby

Released on January 15, 2026 This release introduces prefect sdk generate a new CLI command that generates fully-typed, custom Python SDKs from the deployments in your workspace or self-hosted server, making it easy to trigger your deployments from other workflows with confidence. To see how it works, check out the Prefect docs.

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Prefect 3.6.9 - Auld Lang Sync

3.6.9 - Auld Lang Sync Released on December 31, 2025 New Features 🎉 Add worker-side cancellation for pending flow runs Enhancements ➕➕ Add JSON schema for prefect.yaml files Send entrypoint pip install errors to Prefect logs Run read and count queries concurrently in paginate endpoints Bug Fixes 🐞 Preserve symlinks in get_directory instead of following...

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Prefect 3.6.12 - It's not a feature, it's a bug!

What's Included Enhancements ➕➕ Add httpx.ConnectError to client retry exceptions Bug Fixes 🐞 Add build=False documentation to flow.deploy guide fix: display error details nicely in work-pool create command fix: remove CANCELLED from EnforceCancellingToCancelledTransition to allow retrying cancelled flows Add retry logic to...

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Prefect 3.6.13 - The heartbeat is coming from *inside* the engine

Enhancements ➕➕ - Add FlowRunFilterCreatedBy - Add retry logic for PrefectEventsClient.__aenter__() initial connection Bug Fixes 🐞 - Move flow run heartbeat event emission to flow run engine - Fix websocket cleanup AttributeError in event clients - Add warning when sync task with timeout runs in worker thread - Prevent GitHub token leakage in git error...

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Prefect 3.6.8 - On Exception! On Timeout! On Error and Failure! 🦌

3.6.8 - On Exception! On Timeout! On Error and Failure! 🦌 Released on December 24, 2025 New Features 🎉 Add prefect flow-run retry command Enhancements ➕➕ Add url property to server-side ReceivedEvent for automation templates Bug Fixes 🐞 Add timeout to Docket worker shutdown Prevent dictionary mutation during iteration in preprocess_schema Allow string...

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3.6.14 - A Prefect Server for Every ::1

Enhancements ➕➕ - Support parsing TOML 1.0 on Python 3.11+ - Make runner cancellation observing critical to runner health - Reload root settings after running plugins to enable environment variable updates to take effect - Support IPv6 addresses in prefect server start - Add authentication to /api/events/in WebSocket endpoint Bug Fixes 🐞 - Add polling...

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Prefect 3.6.7 - LoopService #OpenToWork: 3+ Years Experience Looping

3.6.7 - LoopService #OpenToWork: 3+ Years Experience Looping Released on December 18, 2025 Enhancements ➕➕ Add support for AWS IAM authentication for PostgreSQL database Add generic typing support for Variable.get method Convert late_runs service to Docket perpetual function Convert repossessor service to Docket perpetual function Convert foreman service to...

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Prefect 3.6.15 - Simply Authful

Bug Fixes 🐞 Fix PrefectCloudEventsClient auth handshake breaking Cloud connections Cap concurrency limit retry-after to prevent excessive delays from burst traffic

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