Inference Gateway Rust SDK

An SDK written in Rust for the Inference Gateway.

• Inference Gateway Rust SDK
  • Installation
  • Usage
    • Creating a Client
    • Listing Models
    • Listing Models from a specific provider
    • Generating Content
    • Streaming Content
    • Tool-Use
    • Health Check
  • Contributing
  • License

Installation

Run cargo add inference-gateway-sdk.

Usage

Creating a Client

Here is a full example of how to create a client and interact with the Inference Gateway API:

use inference_gateway_sdk::{
    CreateChatCompletionResponse,
    GatewayError,
    InferenceGatewayAPI,
    InferenceGatewayClient,
    ListModelsResponse,
    Message,
    Provider,
    MessageRole
};
use log::info;
use std::env;

#[tokio::main]
async fn main() -> Result<(), GatewayError> {
    if env::var("RUST_LOG").is_err() {
        env::set_var("RUST_LOG", "info");
    }
    env_logger::init();

    // Create a client
    let client = InferenceGatewayClient::new("http://localhost:8080");

    // List all models and all providers
    let response: ListModelsResponse = client.list_models().await?;
    for model in response.data {
        info!("Model: {:?}", model.id);
    }

    // List models for a specific provider
    let response: ListModelsResponse = client.list_models_by_provider(Provider::Groq).await?;
    info!("Models for provider: {:?}", response.provider);
    for model in response.data {
        info!("Model: {:?}", model.id);
    }

    // Generate content - choose from available providers and models
    let response: CreateChatCompletionResponse = client.generate_content(Provider::Groq, "deepseek-r1-distill-llama-70b", vec![
    Message{
        role: MessageRole::System,
        content: "You are an helpful assistent.".to_string()
    },
    Message{
        role: MessageRole::User,
        content: "Tell me a funny joke".to_string()
    }
    ]).await?;

    log::info!(
        "Generated content: {:?}",
        response.choices[0].message.content
    );

    Ok(())
}

Listing Models

To list all available models from all configured providers, use the list_models method:

use inference_gateway_sdk::{
    GatewayError
    InferenceGatewayAPI,
    InferenceGatewayClient,
    ListModelsResponse,
    Message,
};
use log::info;

#[tokio::main]
fn main() -> Result<(), GatewayError> {
    // ...Create a client

    // List models from all providers
    let response: ListModelsResponse = client.list_models().await?;
    for model in response.data {
        info!("Model: {:?}", model.id);
    }

    // ...
}

Listing Models from a specific provider

To list all available models from a specific provider, use the list_models_by_provider method:

use inference_gateway_sdk::{
    GatewayError
    InferenceGatewayAPI,
    InferenceGatewayClient,
    ListModelsResponse,
    Provider,
};
use log::info;

// ...Open main function

// List models for a specific provider
let response: ListModelsResponse = client.list_models_by_provider(Provider::Groq).await?;
info!("Models for provider: {:?}", response.provider);
for model in response.data {
    info!("Model: {:?}", model.id);
}

// ...Rest of the main function

Generating Content

To generate content using a model, use the generate_content method:

use inference_gateway_sdk::{
    CreateChatCompletionResponse,
    GatewayError,
    InferenceGatewayAPI,
    InferenceGatewayClient,
    Message,
    Provider,
    MessageRole
};

// Generate content - choose from available providers and models
let response: CreateChatCompletionResponse = client.generate_content(Provider::Groq, "deepseek-r1-distill-llama-70b", vec![
Message{
    role: MessageRole::System,
    content: "You are an helpful assistent.".to_string(),
    ..Default::default()
},
Message{
    role: MessageRole::User,
    content: "Tell me a funny joke".to_string(),
    ..Default::default()
}
]).await?;

log::info!(
    "Generated content: {:?}",
    response.choices[0].message.content
);

Streaming Content

You need to add the following tiny dependencies:

• futures-util for the StreamExt trait
• serde with feature derive and serde_json for serialization and deserialization of the response content

use futures_util::{pin_mut, StreamExt};
use inference_gateway_sdk::{
    CreateChatCompletionStreamResponse, GatewayError, InferenceGatewayAPI, InferenceGatewayClient,
    Message, MessageRole, Provider,
};
use log::info;
use std::env;

#[tokio::main]
async fn main() -> Result<(), GatewayError> {
    if env::var("RUST_LOG").is_err() {
        env::set_var("RUST_LOG", "info");
    }
    env_logger::init();

    let system_message = "You are an helpful assistent.".to_string();
    let model = "deepseek-r1-distill-llama-70b";

    let client = InferenceGatewayClient::new("http://localhost:8080/v1");
    let stream = client.generate_content_stream(
        Provider::Groq,
        model,
        vec![
            Message {
                role: MessageRole::System,
                content: system_message,
                ..Default::default()
            },
            Message {
                role: MessageRole::User,
                content: "Write a poem".to_string(),
                ..Default::default()
            },
        ],
    );
    pin_mut!(stream);
    // Iterate over the stream of Server Sent Events
    while let Some(ssevent) = stream.next().await {
        let ssevent = ssevent?;

        // Deserialize the event response
        let generate_response_stream: CreateChatCompletionStreamResponse =
            serde_json::from_str(&ssevent.data)?;

        let choice = generate_response_stream.choices.get(0);
        if choice.is_none() {
            continue;
        }
        let choice = choice.unwrap();

        if let Some(usage) = generate_response_stream.usage.as_ref() {
            // Get the usage metrics from the response
            info!("Usage Metrics: {:?}", usage);
            // Probably send them over to a metrics service
            break;
        }

        // Print the token out as it's being sent from the server
        if let Some(content) = choice.delta.content.as_ref() {
            print!("{}", content);
        }

        if let Some(finish_reason) = choice.finish_reason.as_ref() {
            if finish_reason == "stop" {
                info!("Finished generating content");
                break;
            }
        }
    }

    Ok(())
}

Tool-Use

You can pass to the generate_content function also tools, which will be available for the LLM to use:

use inference_gateway_sdk::{
    GatewayError,
    InferenceGatewayAPI,
    InferenceGatewayClient,
    Message,
    Provider,
    MessageRole,
    Tool,
    ToolFunction,
    ToolType
};

let tools = vec![
    Tool {
        r#type: ToolType::Function,
        function: ToolFunction {
            name: "get_current_weather".to_string(),
            description: "Get the weather for a location".to_string(),
            parameters: json!({
                "type": "object",
                "properties": {
                    "location": {
                        "type": "string",
                        "description": "The city name"
                    }
                },
                "required": ["location"]
            }),
        },
    },
];
let resp = client.with_tools(Some(tools)).generate_content(Provider::Groq, "deepseek-r1-distill-llama-70b", vec![
Message {
    role: MessageRole::System,
    content: "You are an helpful assistent.".to_string(),
    ..Default::default()
},
Message {
    role: MessageRole::User,
    content: "What is the current weather in Berlin?".to_string(),
    ..Default::default()
}
]).await?;

for tool_call in resp.response.tool_calls {
    log::info!("Tool Call Requested by the LLM: {:?}", tool_call);
    // Make the function call with the parameters requested by the LLM

    let message = Message {
        role: MessageRole::Tool,
        content: "The content from the tool".to_string(),
        tool_call_id: Some(tool_call.id), // the tool call id so the LLM can reference it
        ..Default::default()
    };

    // Append this message to the next request
}

Health Check

To check if the Inference Gateway is running, use the health_check method:

// ...rest of the imports
use log::info;

// ...main function
let is_healthy = client.health_check().await?;
info!("API is healthy: {}", is_healthy);

Contributing

Please refer to the CONTRIBUTING.md file for information about how to get involved. We welcome issues, questions, and pull requests.

License

This SDK is distributed under the MIT License, see LICENSE for more information.