← Back to glossary
Glossary

Sub-Agent

Reviewed 9 April 2026 Canonical definition

A sub-agent is an agent spawned by a parent agent to handle a specific subtask. Sub-agents should inherit scoped-down permissions from their parent and report results back through a defined interface.

See how every agent performs — and make it better

Prefactor helps teams observe, evaluate, and improve their AI agents in production — across every framework and provider.