mcp-memory 3.0.0

MCP server for knowledge graph memory — entities, relations, and observations persisted in SQLite with FTS5 search
Documentation 
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use serde::{Deserialize, Serialize};
use serde_json::Value;

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct JsonRpcRequest {
    pub jsonrpc: String,
    pub method: String,
    pub params: Option<Value>,
    pub id: Option<Value>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct JsonRpcResponse {
    pub jsonrpc: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub result: Option<Value>,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub error: Option<JsonRpcError>,
    pub id: Option<Value>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct JsonRpcError {
    pub code: i64,
    pub message: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub data: Option<Value>,
}

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

    pub fn error(id: Option<Value>, code: i64, message: String) -> Self {
        Self {
            jsonrpc: "2.0".into(),
            result: None,
            error: Some(JsonRpcError { code, message, data: None }),
            id,
        }
    }
}