[FEATURE] Flag to make it the agent's turn first

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

At the beginning of a session, the user is presented with a blank conversation. It may be preferable to have the agent provide some direction to start the conversation, like necessary inputs or a specific greeting.

Proposed Solution

I'd like to be able to run claude --agent my-agent --go-first or similar, allowing the agent to greet the user and/or ask for specific needed inputs.

Alternative Solutions

A simpler solution would be allowing me to specify a static/canned greeting in the agent definition.

So far we have worked around this by directing our users to just say "hello", or to start a process with a specific skill like /kickoff or /start

Priority

Medium - Would be very helpful

Feature Category

CLI commands and flags

Use Case Example

Example: an agent that drafts essays. Instead of a blank conversation, it begins with something like:

Hi, I'm the essay drafting agent! Please begin by providing me with the assignment.

This helps guide a novice user and eases them into the intended workflow.

Additional Context

_No response_