@seclink: /swarm multi-agent fan-out disabled — what is it. In one sentence: /swarm is a multi-agent parallel fan-out mode in the Claude Code ecosystem: a main Agent splits tasks, dispatches to multiple sub-Agents for simultaneous execution, and finally...

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Summary

Introduces the /swarm multi-agent parallel fan-out mode in the Claude Code ecosystem, which was recently disabled by default with hard limits added, due to runaway recursion and cost explosion.

/swarm multi-agent fan-out disabled — what is it One-sentence explanation /swarm is a multi-agent parallel fan-out mode in the Claude Code ecosystem: a main Agent breaks down tasks, dispatches them to multiple sub-Agents for simultaneous execution, and finally aggregates the results. "Disabled" means that in recent versions, Claude Code turned off this unrestricted fan-out behavior by default and added multiple layers of hard limits. Core mechanism: what is fan-out Main Agent (Lead) ├── Sub Agent A (security review) ├── Sub Agent B (performance analysis) ← parallel execution ├── Sub Agent C (quality check) └── Aggregate → unified report The main Agent acts like a "team lead," splitting large tasks into smaller ones by module/perspective, with each sub-Agent handling them independently, and finally the Lead merges the results. Suitable for scenarios like large-scale code review, batch refactoring, and multi-perspective research. Why it was disabled/limited Root cause: runaway recursion + cost explosion.
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Cached at: 08/08/26, 11:03 AM

/swarm multi-agent fan-out disabled — what it is

One-sentence explanation

/swarm is a multi-agent parallel fan-out pattern in the Claude Code ecosystem: one lead agent breaks a task into pieces, dispatches them to multiple sub-agents to execute concurrently, and finally aggregates the results.

“Disabled” means Claude Code has turned off this unrestricted fan-out behavior by default in recent versions, adding multiple layers of hard limits.

Core mechanism: what fan-out is

Lead Agent ├── Sub-agent A (security review) ├── Sub-agent B (performance analysis) ← runs in parallel ├── Sub-agent C (quality check) └── Aggregation → unified report

The lead agent acts like a “team leader,” splitting large tasks into smaller tasks by module/perspective. Each sub-agent handles its piece independently, and the lead merges the results at the end. This is suited for large-scale code review, batch refactoring, multi-angle research, and similar scenarios.

Why it was disabled/limited

Root cause: runaway recursion + cost explosion.

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