Rules — Gemini Directory
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    Rules

    3 rules available in the Gemini directory

    Custom system instructions and configuration rules that shape how the AI behaves. Copy any rule directly into your setup to customize responses, tone, expertise, and output format.

    Coding

    Gemini API System Instructions Template

    A structured template for Gemini API system instructions covering identity, behavioral rules, output format, grounding, and safety guidelines.

    G
    Google AI
    Best Practices

    Gemini 3 Prompting Guide - System Instructions

    Google's official Gemini 3 prompting guide covering system instructions best practices. Gemini 3 follows short, direct instructions better than previous versions.

    G
    Google Cloud
    API

    Gemini API System Instructions Best Practices

    Official Google documentation on using system instructions with the Gemini API. Covers how to set persona, define output formats, specify knowledge cutoff awareness, and configure behavioral constraints programmatically.

    G
    Google

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