A Prompt With {{Placeholders}} Is a Function Signature Nobody Type-Checks

Description and use

<p>If you have written a function, you already understand Retell's dynamic variables better than most agencies using them. You just have not been told that a prompt with <code>{{first_name}}</code> in it is a function signature, and that nothing type-checks the call site.</p> <p>I build production voice agents for US clients on Retell, n8n, GoHighLevel and Twilio, and I run <a href="https://www.voice-dash.com" rel="noopener noreferrer">VoiceDash</a>, a white-label portal agencies hand to their clients so they can see their calls. Dynamic variables are the feature that lets one tested agent ser

Problem

<p>If you have written a function, you already understand Retell's dynamic variables better than most agencies using them. You just have not been told that a prompt with <code>{{first_name}}</code> in it is a function signature, and that nothing type-checks the call site.</p> <p>I build production voice agents for US clients on Retell, n8n, GoHighLevel and Twilio, and I run <a href="https://www.voice-dash.com" rel="noopener noreferrer">VoiceDash</a>, a white-label portal agencies hand to their clients so they can see their calls. Dynamic variables are the feature that lets one tested agent ser

Outcome

<p>If you have written a function, you already understand Retell's dynamic variables better than most agencies using them. You just have not been told that a prompt with <code>{{first_name}}</code> in it is a function signature, and that nothing type-checks the call site.</p> <p>I build production voice agents for US clients on Retell, n8n, GoHighLevel and Twilio, and I run <a href="https://www.voice-dash.com" rel="noopener noreferrer">VoiceDash</a>, a white-label portal agencies hand to their clients so they can see their calls. Dynamic variables are the feature that lets one tested agent ser

Evidence

A Prompt With {{Placeholders}} Is a Function Signature Nobody Type-Checks

Source