Rig-Gemini-gRPC

This companion crate integrates Google Gemini gRPC API with Rig, offering better performance and type safety compared to the REST API.

Usage

Add the companion crate to your Cargo.toml, along with the rig-core crate:

[dependencies]
rig-gemini-grpc = "0.1.0"
rig-core = "0.30.0"

You can also run cargo add rig-gemini-grpc rig-core to add the most recent versions of the dependencies to your project.

See the /examples folder for more usage examples.

Setup

Set your Gemini API key as an environment variable:

export GEMINI_API_KEY=your_api_key_here

Example

use rig::prelude::*;
use rig_gemini_grpc::Client;

#[tokio::main]
async fn main() -> Result<(), anyhow::Error> {
    let client = Client::from_env();

    let agent = client
        .agent("gemini-2.5-flash")
        .preamble("You are a helpful assistant.")
        .build();

    let response = agent.prompt("Hello!").await?;
    println!("{}", response);

    Ok(())
}

Features

• Full completion support with streaming
• Embedding generation
• Tool calling support
• Reasoning and thought signatures
• Image input support