Amazon Bedrock AgentCore

Everything Fervor AI has published that touches Amazon Bedrock AgentCore — 3 pieces, newest first.

• AgentCore's Multi-Agent Collaboration Is a Shared /tmp Directory

  AgentCore runtime instances make multi-agent collaboration a shared filesystem on one EC2 box, and AWS's own security page says the agents sharing it are not isolated…

• CoreBreak and the Tool Call That Skips the Model Entirely

  CoreBreak is an authorization bug rather than a prompt attack, because three separate runtimes executed tool calls without ever checking that a model produced them,…

• Briefing · July 21, 2026 · morning

  The skill file became a build artifact: SkillOpt trains skills with epochs and validation gates, cloud vendors built catalogs around reusable skills, and nobody shipped…