[feat] Glad to see more agent support and a convenient comment with send

[FFengIll]

It helps, and I

• wanna support more agents, or custom
• wanna send immediately, not comment only

I 'd glad to do a PR too.

[buzinas]

If you can describe in a bit more detail what you'd like to see, I can definitely take a look into it.

Also, if you had to pick one agent, which one would it be? I'd like to support more agents, but one at a time.