> ## Documentation Index
> Fetch the complete documentation index at: https://docs.promptjuggler.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Prompt & Workflow Tools

> Call other prompts or workflows as tools.

A prompt can call another prompt or trigger a workflow as a tool. The model decides when to invoke it, PromptJuggler handles the execution, and the output feeds back into the conversation.

Select the prompt or workflow from a dropdown and choose a version (or tag, or latest published). The parent prompt receives the tool’s output – text only, not internal state. If you need to share more context between them, [channels and memory](/concepts/memory-and-threads) can help, though things get interesting fast when prompts start nesting deeply.

The parent prompt can also set the **channel** for a tool-prompt, orchestrating which memory lane it reads from and writes to. This is one of the building blocks of agentic patterns: a coordinator prompt directing specialist prompts, each on their own channel.