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0.16.8

parruda/swarm0.16.8May 14, 2026by kianjones9

AI Summary

A maintenance release fixing workflow updates and hardening the sandbox security by switching from pickle to JSON for tool result transport.

Key Highlights

  • Fixed workflows update
  • Security fix: use JSON instead of pickle for sandbox->server tool result transport

Full Release Notes

## What's Changed
* fix: workflows update by @cpacker in https://github.com/letta-ai/letta/pull/3292
* fix(security): use JSON instead of pickle for sandbox->server tool result transport by @kianjones9 in https://github.com/letta-ai/letta/pull/3343


**Full Changelog**: https://github.com/letta-ai/letta/compare/0.16.7...0.16.8