feat: support moonshot language model

rig-core/Cargo.toml

@@ -66,3 +66,7 @@ required-features = ["derive"]
 [[example]]
 name = "xai_embeddings"
 required-features = ["derive"]
+
+[[example]]
+name = "agent_with_moonshot"
+required-features = ["derive"]

rig-core/examples/agent_with_moonshot.rs

@@ -0,0 +1,52 @@
+use rig::agent::AgentBuilder;
+use rig::providers::moonshot::{CompletionModel, MOONSHOT_CHAT};
+use rig::{completion::Prompt, providers};
+
+#[tokio::main]
+async fn main() -> Result<(), anyhow::Error> {
+    println!("Running basic agent with moonshot");
+    basic_moonshot().await?;
+
+    println!("\nRunning moonshot agent with context");
+    context_moonshot().await?;
+
+    println!("\n\nAll agents ran successfully");
+    Ok(())
+}
+
+fn client() -> providers::moonshot::Client {
+    providers::moonshot::Client::from_env()
+}
+
+fn partial_agent_moonshot() -> AgentBuilder<CompletionModel> {
+    let client = client();
+    client.agent(MOONSHOT_CHAT)
+}
+
+async fn basic_moonshot() -> Result<(), anyhow::Error> {
+    let comedian_agent = partial_agent_moonshot()
+        .preamble("You are a comedian here to entertain the user using humour and jokes.")
+        .build();
+
+    // Prompt the agent and print the response
+    let response = comedian_agent.prompt("Entertain me!").await?;
+    println!("{}", response);
+
+    Ok(())
+}
+
+async fn context_moonshot() -> Result<(), anyhow::Error> {
+    let model = client().completion_model(MOONSHOT_CHAT);
+
+    // Create an agent with multiple context documents
+    let agent = AgentBuilder::new(model)
+        .preamble("Definition of a *glarb-glarb*: A glarb-glarb is an ancient tool used by the ancestors of the inhabitants of planet Jiro to farm the land.")
+        .build();
+
+    // Prompt the agent and print the response
+    let response = agent.prompt("What does \"glarb-glarb\" mean?").await?;
+
+    println!("{}", response);
+
+    Ok(())
+}

rig-core/src/providers/mod.rs

@@ -46,6 +46,7 @@
 pub mod cohere;
 pub mod eternalai;
 pub mod gemini;
 pub mod openai;
 pub mod perplexity;
 pub mod xai;
+pub mod moonshot;

rig-core/src/providers/moonshot.rs

@@ -0,0 +1,265 @@
+//! Moonshot API client and Rig integration
+//!
+//! # Example
+//! ```
+//! use rig::providers::moonshot;
+//!
+//! let client = moonshot::Client::new("YOUR_API_KEY");
+//!
+//! let moonshot_model = client.completion_model(moonshot::MOONSHOT_CHAT);
+//! ```
+
+use crate::{
+    agent::AgentBuilder,
+    completion::{self, CompletionError, CompletionRequest},
+    extractor::ExtractorBuilder,
+    json_utils,
+};
+use schemars::JsonSchema;
+use serde::{Deserialize, Serialize};
+use serde_json::json;
+use std::time::Duration;
+
+// ================================================================
+// Main Moonshot Client
+// ================================================================
+const MOONSHOT_API_BASE_URL: &str = "https://api.moonshot.cn/v1";
+
+#[derive(Clone)]
+pub struct Client {
+    base_url: String,
+    http_client: reqwest::Client,
+}
+
+impl Client {
+    /// Create a new Moonshot client with the given API key.
+    pub fn new(api_key: &str) -> Self {
+        Self::from_url(api_key, MOONSHOT_API_BASE_URL)
+    }
+
+    /// Create a new Moonshot client with the given API key and base API URL.
+    pub fn from_url(api_key: &str, base_url: &str) -> Self {
+        Self {
+            base_url: base_url.to_string(),
+            http_client: reqwest::Client::builder()
+                .default_headers({
+                    let mut headers = reqwest::header::HeaderMap::new();
+                    headers.insert(
+                        "Authorization",
+                        format!("Bearer {}", api_key)
+                            .parse()
+                            .expect("Bearer token should parse"),
+                    );
+                    headers
+                })
+                .timeout(Duration::from_secs(120))
+                .build()
+                .expect("Moonshot reqwest client should build"),
+        }
+    }
+
+    /// Create a new Moonshot client from the `MOONSHOT_API_KEY` environment variable.
+    /// Panics if the environment variable is not set.
+    pub fn from_env() -> Self {
+        let api_key = std::env::var("MOONSHOT_API_KEY").expect("MOONSHOT_API_KEY not set");
+        Self::new(&api_key)
+    }
+
+    fn post(&self, path: &str) -> reqwest::RequestBuilder {
+        let url = format!("{}/{}", self.base_url, path).replace("//", "/");
+        self.http_client.post(url)
+    }
+
+    /// Create a completion model with the given name.
+    ///
+    /// # Example
+    /// ```
+    /// use rig::providers::moonshot::{Client, self};
+    ///
+    /// // Initialize the Moonshot client
+    /// let moonshot = Client::new("your-moonshot-api-key");
+    ///
+    /// let completion_model = moonshot.completion_model(moonshot::MOONSHOT_CHAT);
+    /// ```
+    pub fn completion_model(&self, model: &str) -> CompletionModel {
+        CompletionModel::new(self.clone(), model)
+    }
+
+    /// Create an agent builder with the given completion model.
+    pub fn agent(&self, model: &str) -> AgentBuilder<CompletionModel> {
+        AgentBuilder::new(self.completion_model(model))
+    }
+
+    /// Create an extractor builder with the given completion model.
+    pub fn extractor<T: JsonSchema + for<'a> Deserialize<'a> + Serialize + Send + Sync>(
+        &self,
+        model: &str,
+    ) -> ExtractorBuilder<T, CompletionModel> {
+        ExtractorBuilder::new(self.completion_model(model))
+    }
+}
+
+#[derive(Debug, Deserialize)]
+struct ApiErrorResponse {
+    error: MoonshotError,
+}
+
+#[derive(Debug, Deserialize)]
+struct MoonshotError {
+    message: String,
+}
+
+#[derive(Debug, Deserialize)]
+#[serde(untagged)]
+enum ApiResponse<T> {
+    Ok(T),
+    Err(ApiErrorResponse),
+}
+
+// ================================================================
+// Moonshot Completion API
+// ================================================================
+pub const MOONSHOT_CHAT: &str = "moonshot-v1-128k";
+
+#[derive(Debug, Deserialize)]
+pub struct CompletionResponse {
+    pub id: String,
+    pub object: String,
+    pub created: u64,
+    pub model: String,
+    pub choices: Vec<Choice>,
+    pub usage: Usage,
+}
+
+impl From<ApiErrorResponse> for CompletionError {
+    fn from(err: ApiErrorResponse) -> Self {
+        CompletionError::ProviderError(err.error.message)
+    }
+}
+
+impl TryFrom<CompletionResponse> for completion::CompletionResponse<CompletionResponse> {
+    type Error = CompletionError;
+
+    fn try_from(value: CompletionResponse) -> std::prelude::v1::Result<Self, Self::Error> {
+        match value.choices.as_slice() {
+            [Choice {
+                message:
+                    Message {
+                        content: Some(content),
+                        ..
+                    },
+                ..
+            }, ..] => Ok(completion::CompletionResponse {
+                choice: completion::ModelChoice::Message(content.to_string()),
+                raw_response: value,
+            }),
+            _ => Err(CompletionError::ResponseError(
+                "Response did not contain a message".into(),
+            )),
+        }
+    }
+}
+
+#[derive(Debug, Deserialize)]
+pub struct Choice {
+    pub index: usize,
+    pub message: Message,
+    pub finish_reason: String,
+}
+
+#[derive(Debug, Deserialize)]
+pub struct Message {
+    pub role: String,
+    pub content: Option<String>,
+}
+
+#[derive(Clone, Debug, Deserialize)]
+pub struct Usage {
+    pub prompt_tokens: usize,
+    pub total_tokens: usize,
+}
+
+impl std::fmt::Display for Usage {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "Prompt tokens: {} Total tokens: {}",
+            self.prompt_tokens, self.total_tokens
+        )
+    }
+}
+
+#[derive(Clone)]
+pub struct CompletionModel {
+    client: Client,
+    pub model: String,
+}
+
+impl CompletionModel {
+    pub fn new(client: Client, model: &str) -> Self {
+        Self {
+            client,
+            model: model.to_string(),
+        }
+    }
+}
+
+impl completion::CompletionModel for CompletionModel {
+    type Response = CompletionResponse;
+
+    #[cfg_attr(feature = "worker", worker::send)]
+    async fn completion(
+        &self,
+        mut completion_request: CompletionRequest,
+    ) -> Result<completion::CompletionResponse<CompletionResponse>, CompletionError> {
+        let mut full_history = if let Some(preamble) = &completion_request.preamble {
+            vec![completion::Message {
+                role: "system".into(),
+                content: preamble.clone(),
+            }]
+        } else {
+            vec![]
+        };
+
+        full_history.append(&mut completion_request.chat_history);
+
+        full_history.push(completion::Message {
+            role: "user".into(),
+            content: completion_request.prompt_with_context(),
+        });
+
+        let request = json!({
+            "model": self.model,
+            "messages": full_history,
+            "temperature": completion_request.temperature,
+        });
+
+        let response = self
+            .client
+            .post("/chat/completions")
+            .json(
+                &if let Some(params) = completion_request.additional_params {
+                    json_utils::merge(request, params)
+                } else {
+                    request
+                },
+            )
+            .send()
+            .await?;
+
+        if response.status().is_success() {
+            match response.json::<ApiResponse<CompletionResponse>>().await? {
+                ApiResponse::Ok(response) => {
+                    tracing::info!(target: "rig",
+                        "Moonshot completion token usage: {}",
+                        response.usage
+                    );
+                    response.try_into()
+                }
+                ApiResponse::Err(err) => Err(CompletionError::ProviderError(err.error.message)),
+            }
+        } else {
+            Err(CompletionError::ProviderError(response.text().await?))
+        }
+    }
+}