AnalysisOpinion / analysisAgents & Tool Use1 source · Oct 12, 2026

1,000 Agent Tasks in a Sandbox: What Breaks When LLMs Run Code — Kevin Orellana, AWS

Kevin Orellana, an engineer on Amazon Bedrock AgentCore, wrapped AgentCore's code sandbox and cloud browser in an MCP server and had a coding agent write and run 1,000 tests across 10 domains, logging results to SQLite.

Proof1 independent outlet

Key points

  • We pointed a coding agent at our own sandbox overnight and told it to break things.
  • NEXT UP: AI ENGINEER CODE SUMMIT
  • • Using a coding agent plus MCP to stress-test your own platform
  • • How sandbox limits decide whether an agent can finish its task

Sources (1)

  • [1]1,000 Agent Tasks in a Sandbox: What Breaks When LLMs Run Code — Kevin Orellana, AWS
    AI Engineer (YouTube) · Oct 12, 05:36 AM
    Kevin Orellana, an engineer on Amazon Bedrock AgentCore, wrapped AgentCore's code sandbox and cloud browser in an MCP server and had a coding agent write and run 1,000 tests across 10 domains, logging results to SQLite.
    We pointed a coding agent at our own sandbox overnight and told it to break things.

Extractive summary: sentences quoted from the sources.

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