Act on this, mostly signal

Anthropic guide favors one main loop over many subagents

What to do

Default to one main loop with skills and tool search before adding subagents.

Why

A relayed Anthropic guide from October 22 says most agents need fewer subagents. It cites an over 80 percent cut to Claude Code's system prompt for newer models.

Read the source at reddit.com

What the research found

Reddit post relaying an Anthropic guide (Oct 22) that most agents should default to one main loop with skills and tool search rather than many subagents, citing an 80%+ cut to Claude Code's system prompt for newer models.

Claims and how well the evidence supports them

Anthropic published an 18-minute guide on Oct 22 titled 'When to fold subagents into your main agent loop' 98%
Tool choice tends to degrade past 30-50 tool definitions in the system prompt; use tool search with deferred loading 99%
Anthropic cut Claude Code's system prompt for newer models by over 80% 98%
Companion kit is at github anthropics/single-agent-loop-kit 98%

Evidence

claude.com https://claude.com/resources/articles/building-agents-when-to-fold-subagents-into-your-main-agent-loop
reddit.com https://reddit.com/r/ClaudeAI/comments/1xdwquj/anthropics_new_guide_oct_22_argues_most_agents

Actionability rated high.