npcterm 1.1.0

Headless terminal emulator for AI agents with full PTY access over MCP
Documentation 
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use serde::{Deserialize, Serialize};
use serde_json::Value;

/// JSON-RPC request
#[derive(Debug, Deserialize)]
pub struct JsonRpcRequest {
    #[allow(dead_code)]
    pub jsonrpc: String,
    pub id: Option<Value>,
    pub method: String,
    #[serde(default)]
    pub params: Value,
}

/// JSON-RPC response
#[derive(Debug, Serialize)]
pub struct JsonRpcResponse {
    pub jsonrpc: &'static str,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub id: Option<Value>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub result: Option<Value>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub error: Option<JsonRpcError>,
}

#[derive(Debug, Serialize)]
pub struct JsonRpcError {
    pub code: i32,
    pub message: String,
}

impl JsonRpcResponse {
    pub fn success(id: Option<Value>, result: Value) -> Self {
        Self {
            jsonrpc: "2.0",
            id,
            result: Some(result),
            error: None,
        }
    }

    pub fn error(id: Option<Value>, code: i32, message: String) -> Self {
        Self {
            jsonrpc: "2.0",
            id,
            result: None,
            error: Some(JsonRpcError { code, message }),
        }
    }
}

/// MCP Tool definition
#[derive(Debug, Serialize)]
pub struct ToolDef {
    pub name: String,
    pub description: String,
    #[serde(rename = "inputSchema")]
    pub input_schema: Value,
}

/// MCP tools/call result
#[derive(Debug, Serialize)]
pub struct ToolCallResult {
    pub content: Vec<ToolContent>,
    #[serde(rename = "isError", skip_serializing_if = "std::ops::Not::not")]
    pub is_error: bool,
}

#[derive(Debug, Serialize)]
pub struct ToolContent {
    #[serde(rename = "type")]
    pub content_type: &'static str,
    pub text: String,
}

impl ToolCallResult {
    pub fn text(text: String) -> Self {
        Self {
            content: vec![ToolContent {
                content_type: "text",
                text,
            }],
            is_error: false,
        }
    }

    pub fn error(message: String) -> Self {
        Self {
            content: vec![ToolContent {
                content_type: "text",
                text: message,
            }],
            is_error: true,
        }
    }
}