Injecting dozens of tool definitions into a single agent prompt degrades model focus, inflates token overhead, and leads to tool hallucination. Structuring capability domains into isolated, tool-scoped subagents keeps execution contexts tightly bounded and predictable.
This architecture isn't without costs. Spawning subagents introduces process orchestration overhead, and poor subagent boundaries can lead to costly infinite retry loops across graph checkpoints.
By streaming intermediate logs into separate activity interfaces and decoupling background execution servers from user interface clients, engineering teams can maintain clear context boundaries and keep long-running agentic tasks moving reliably.
Read the full article: Designing Tool-Scoped Subagents to Prevent Context Bloat in Agent Runtimes
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