Real, published system prompts from shipping AI products — each with source attribution and notes on what makes it work.
System prompt for Dia, the in-browser AI assistant from The Browser Company. It defines a rich custom markup vocabulary (Simple Answers via <strong>, …
The claude.ai consumer system prompt for Claude Sonnet 4.5 (dated Sept 29, 2025). Opens with classic Claude persona rules (no URL opening, step-by-ste…
A read-only codebase question-answering prompt for Devin's DeepWiki that answers user queries strictly from supplied codebase context plus git blame. …
System prompt for Perplexity's answer-generation stage, where a separate planning system has already gathered search results. It specifies a goal of e…
System prompt for Comet, Perplexity's browser-automation assistant that drives a Chrome extension via tools like computer, read_page, get_page_text, f…
Builder-mode system prompt for the Trae AI IDE agent. It defines pair-programming communication rules, code-change conventions, debugging and external…
System prompt for Trae AI's chat mode, an agentic IDE coding assistant operating on the 'AI Flow' paradigm. Structured with XML sections (identity, pu…