subagent-composition

Compose a Claude Code sub-agent on the fly — persona, inherited-context transfer, tool budget, and return contract — as either an ephemeral Agent-tool call or a persistent .claude/agents/*.md definition. Use whenever the user asks to spawn, delegate to, build, design, or fix a sub-agent or agent file; mentions agent frontmatter, tool allowlists, parallel agents, fan-out, or worktree isolation; or when a sub-agent came back with thin, wrong, or off-scope output and the prompt is the suspect. Also use when deciding whether to delegate at all. Pairs with the prompt-engineering and hypershot-protocol skills, which must be invoked first in any session that authors agent prompt bytes (house Guardrail 15).

Diagnostic canary content for the subagent-composition probe harness. Installed and removed by run-probes.sh. Not for general use.