Frontmatter

If you’ve been building Claude Code subagents, you’ve probably hit the same friction point: you spawn an agent, and then you have to manually kick it off with a first message. As of the latest Claude Code release (v2.1.9x, published this morning), that extra step is gone. What’s New: initialPrompt in Frontmatter Claude Code now supports a new initialPrompt field in YAML frontmatter. When an agent is invoked as a subagent, this prompt is automatically submitted as the first turn — no human input required. ...

Claude Code’s latest release (v2.1.9x) adds initialPrompt — a YAML frontmatter field that auto-submits a first turn when a subagent is spawned. This guide shows you exactly how to use it. What You’ll Accomplish By the end of this guide, you’ll have subagents that start executing immediately when invoked — no manual prompting required. Prerequisites Claude Code v2.1.9x or later (claude --version to check) An existing Claude Code project with at least one subagent definition Basic familiarity with YAML frontmatter in agent files Step 1: Update Claude Code First, make sure you’re on the latest version: ...