New article: Heavy AI Agents Are an Anti-Pattern

Canonical version: New article: Heavy AI Agents Are an Anti-Pattern.

Heavy AI Agents Are an Anti-Pattern: Why Fewer Agents With More Skills Wins

Heavy specialized AI agents are an anti-pattern. Fewer agents with deep skill libraries beat them on every axis that matters: cognitive load, flexibility, context budget, determinism, and maintenance

Sébastien DuboisSebastien Dubois

The argument in one line: most AI agent rosters are an anti-pattern. People accumulate fifteen specialists, then spend more time managing the roster than actually using AI to get work done. The shape that scales is the opposite — fewer agents, with deeper skill libraries.

A few hard-earned points from the piece:

• Heavy agents create cognitive overhead. Once you cross 5 agents, the roster itself becomes a thing you manage.
• Specialists are brittle. Real tasks straddle boundaries. The "writing" task often needs code; the "research" task often needs a diagram.
• Skills keep the Context Window lean. A heavy agent walks into the room half-full. A skill-based agent walks in empty and only loads what the request needs (the Prompt Lazy Loading AI Design Pattern (PLL) applied to capabilities).
• Skills add the determinism AI lacks: templates, scripts, embedded programs. Probabilistic routing, deterministic execution.
• Mental model: AI Agents = the rules of the game (small, stable). AI Agent Skills = the toolbox (many, replaceable). Don't conflate them.
• Update one skill, every agent benefits (see AI Skill Composability). Try that with three deep specialists carrying their own embedded knowledge — you can't.

The honest steelman: specialization IS real. But it belongs in the SKILL, not the AGENT. A hyper-specific skill that any generalist loads on demand gives you the same precision without the orchestration tax.

If your agent list makes you tired just looking at it, that's the signal. Collapse them. Move the actual capability into skills. The skill library compounds. The agents barely change. That's the win.

🔗 https://www.dsebastien.net/heavy-ai-agents-are-an-anti-pattern-why-fewer-agents-with-more-skills-wins/

Related

• Heavy AI Agents Are an Anti-Pattern - Why Fewer Agents With More Skills Wins (Article)
• AI Agents
• AI Agent Skills
• AI Skill Composability
• Context Window
• Prompt Lazy Loading AI Design Pattern (PLL)

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