Unverified50% confidenceFactExact time
A custom subagent's Markdown definition file can declare an isolation mode, letting the agent work in its own isolated directory.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/17/2026
First Seen
Valid until: 1/15/2027
Sources
Related Entities
Related Claims
UnverifiedUsers can place Markdown files in the agents directory to define custom subagents, configuring the name, areas of expertise, tool whitelist, model and thinking effort.77% similarUnverifiedCustom sub-agents are configured by creating a docs/agents/ directory in the project root and defining agent attributes using Markdown files.75% similarUnverifiedSub-agents need to be defined by specific Markdown files in the codebase and are part of the project's file structure.74% similarUnverifiedIn the context of this article, an agent refers to an AI work unit given clear task boundaries that can independently read and write files; unlike chat-style AI, it is deliberately isolated and receives only a segmented fragment of the truth file and the task for the current chapter, so multiple agents do not interfere with one another.69% similarUnverifiedBuilding a custom handoff layer typically means defining a framework-agnostic Message Contract that specifies the fields each agent handoff must carry, such as decisions made, constraints, remaining token budget, and provenance ID67% similar
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