Although the system prompt is the core of the agent and plays a crucial role in shaping its behavior, it cannot control every aspect of the system. Below are a few examples of areas that cannot be influenced solely through the prompt.Documentation Index
Fetch the complete documentation index at: https://docs.telli.com/llms.txt
Use this file to discover all available pages before exploring further.
Examples
| Item | Description |
|---|---|
| Voice (speed, volume, pitch) | Determined by the TTS provider (Cartesia/ElevenLabs), not by the prompt |
| Timing / Pauses | The agent has no sense of time; “wait 2 seconds” is ignored |
| First Message | Set in the “First Message” field in the agent settings, not in the system prompt |
| Silence Handling | The idle handler is system behavior; the prompt can only trigger waitForUserToReturn as a tool call |
| Call Outcomes | Extracted from the transcript after the call, not set by the agent during the call |
| Tool Calls | The prompt defines when a tool is called; the system automatically provides the current parameter definition to the agent |