STILL A WIP

A library to use Google Gemini's API directly in Rust! Made because the current options weren't very capable and didn't support 100% of the official API.

Example

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    println!(
        "{}",
        gemini_rs::chat("gemini-2.0-flash")
            .send_message("Explain how AI works")
            .await?
    );
    Ok(())
}

lib.rs:

A Rust client library for Google's Gemini AI models.

Overview

This library provides a fully-featured client for interacting with Google's Gemini AI models, supporting all major API features including:

• Text generation and chat conversations
• JSON-structured outputs
• Function calling
• Safety settings and content filtering
• System instructions
• Model configuration (temperature, tokens, etc.)

Authentication

The client requires a Gemini API key which can be provided in two ways:

• Environment variable: GEMINI_API_KEY
• Programmatically: Client::new(api_key)

Basic Usage

#[tokio::main]
async fn main() -> gemini_rs::Result<()> {
    // Simple chat interaction
    let response = gemini_rs::chat("gemini-2.0-flash")
        .send_message("What is Rust's ownership model?")
        .await?;
    println!("{}", response);

    Ok(())
}

Advanced Features

The library supports advanced Gemini features through the Client and Chat types:

• Model management (client().models())
• Custom generation settings (chat.config_mut())
• Safety settings (chat.safety_settings())
• System instructions (chat.system_instruction())
• Conversation history management (chat.history_mut())