Feature Request

Problem

Currently, inline buttons can only be added via the message tool with explicit buttons parameter. There is no way to:

1. Add a persistent button to every agent response automatically
2. Show a "Stop" button before the agent starts processing

This means users have no quick way to interrupt a running agent or subagent mid-processing.

Proposed Solution

Add a configuration option to define persistent inline buttons that appear on every outgoing message (or at least on agent responses):

{
  "channels": {
    "telegram": {
      "persistentButtons": [
        { "text": "🛑 /stop", "sendText": "/stop" },
        { "text": "📋 /agents", "sendText": "/agents" }
      ]
    }
  }
}

Or alternatively, a pre-response button that appears immediately when a user sends a message (before the agent starts generating a response), allowing the user to cancel.

Use Case

• User sends a long task to the main agent
• Agent spawns a subagent (takes 2-5 minutes)
• User wants to stop it but has no quick UI affordance
• With persistent buttons: tap 🛑 /stop → subagent killed immediately

Notes

• Telegram supports InlineKeyboardMarkup on any message
• Button click should send the configured text as a regular message (not callback_data), so the agent receives and processes it normally
• This is a UX quality-of-life improvement for power users managing multiple agents

Platform: Telegram
Version: 2026.3.1