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Claude Code v2.1.63

Custom Subagent Definitions [In Development]

What

Schema support for defining custom subagent types that can be invoked via the Agent tool.

Status

Schema definitions exist but no user-facing documentation or invocation path found.

Details
  • New schema field: "Definition for a custom subagent that can be invoked via the Agent tool"
  • Includes fields for agent type identifier, description, model alias, and tool availability
  • Suggests future ability to define custom agent types in configuration
Evidence

Schema descriptions (search for "Definition for a custom subagent", "Agent type identifier")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.63 →