> For the complete documentation index, see [llms.txt](https://docs.promptjoy.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.promptjoy.com/api/api-usage/rust.md).

# Rust

In Rust, we'll use the `reqwest` library to send HTTP requests. Here's how you can use the book search API with Rust:

First, add the following dependencies in your `Cargo.toml` file:

```rust
[dependencies]
reqwest = { version = "0.11", features = ["json"] }
tokio = { version = "1", features = ["full"] }
serde = { version = "1.0", features = ["derive"] }
serde_json = "1.0"

```

Then, you can use the following code to make the API request:

```rust
use reqwest::header::{HeaderMap, HeaderValue, CONTENT_TYPE};
use serde::Deserialize;
use std::env;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    #[derive(Deserialize)]
    struct Book {
        title: String,
        author: String,
    }

    let url = "https://api.promptjoy.com/api/mVMCpq";
    let api_key = env::var("PROMPTJOY_API_KEY").unwrap();
    let mut headers = HeaderMap::new();
    headers.insert("x-api-key", HeaderValue::from_str(&api_key).unwrap());
    headers.insert(CONTENT_TYPE, HeaderValue::from_static("application/json"));

    let client = reqwest::Client::new();
    let res = client.post(url)
        .headers(headers)
        .json(&serde_json::json!({"query": "your_search_term"}))
        .send()
        .await?;

    let books: Vec<Book> = res.json().await?;
    for book in books {
        println!("Title: {}, Author: {}", book.title, book.author);
    }

    Ok(())
}

```

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Replace `"your_search_term"` with the book you're searching for. This function will return a vector of books.

Remember to handle exceptions and errors as needed in your actual application code.

Note: This example uses the `serde` and `serde_json` crates for deserialization of the JSON response. The `tokio` crate is used as the async runtime. Also, the API key is retrieved from environment variables for security reasons. Ensure that you've set the `PROMPTJOY_API_KEY` environment variable in your environment where this code will be executed.

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