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Before the first prompt: Code execution paths in trusted coding-agent projects

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Before the first prompt: Code execution paths in trusted coding-agent projects

Trusted coding-agent projects can execute repository-controlled code before processing user input through Codex MCP (Model Context Protocol) configuration and Claude Code environment settings. This execution pathway occurs during initialization, before the first user prompt reaches the agent. The research demonstrates how code runs in the agent environment based on project configuration rather than explicit user instruction.

Why it matters: Development teams using Claude-based coding agents need to audit repository configurations and initialization scripts, as malicious or compromised project settings could execute arbitrary code in the agent environment before users interact with the system.

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