AI article
A Prompt With {{Placeholders}} Is a Function Signature Nobody Type-Checks
Community description: If you have written a function, you already understand Retell's dynamic variables better than most...
Dev.to | Oct 13, 2026 | Nabeel Hassan
Automated excerpt
All caps names, "test test", a first name field holding a company name. Every variable the template uses is always present, so the model never sees a raw placeholder. Business name, address, hours, transfer number, persona name, calendar ID: variables.
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