diff --git a/lexicons/ai.syui.gpt.core.json b/lexicons/ai.syui.gpt.core.json
new file mode 100644
index 0000000..16194ff
--- /dev/null
+++ b/lexicons/ai.syui.gpt.core.json
@@ -0,0 +1,55 @@
+{
+  "lexicon": 1,
+  "id": "ai.syui.gpt.core",
+  "defs": {
+    "main": {
+      "type": "record",
+      "description": "AI identity and personality configuration. Typically one record per AI with rkey 'self'.",
+      "key": "any",
+      "record": {
+        "type": "object",
+        "required": ["did", "handle", "content", "createdAt"],
+        "properties": {
+          "did": {
+            "type": "string",
+            "format": "did",
+            "description": "DID of the AI agent."
+          },
+          "handle": {
+            "type": "string",
+            "description": "Handle of the AI agent."
+          },
+          "content": {
+            "type": "union",
+            "closed": false,
+            "refs": ["#markdown"],
+            "description": "Core personality and instructions. Supports markdown and other formats via $type."
+          },
+          "createdAt": {
+            "type": "string",
+            "format": "datetime",
+            "description": "Timestamp when this core record was created."
+          },
+          "updatedAt": {
+            "type": "string",
+            "format": "datetime",
+            "description": "Timestamp of the last update."
+          }
+        }
+      }
+    },
+    "markdown": {
+      "type": "object",
+      "description": "Markdown content format.",
+      "required": ["text"],
+      "properties": {
+        "text": {
+          "type": "string",
+          "maxLength": 1000000,
+          "maxGraphemes": 100000,
+          "description": "Markdown text content."
+        }
+      }
+    }
+  }
+}
diff --git a/lexicons/ai.syui.gpt.memory.json b/lexicons/ai.syui.gpt.memory.json
new file mode 100644
index 0000000..d59f95e
--- /dev/null
+++ b/lexicons/ai.syui.gpt.memory.json
@@ -0,0 +1,50 @@
+{
+  "lexicon": 1,
+  "id": "ai.syui.gpt.memory",
+  "defs": {
+    "main": {
+      "type": "record",
+      "description": "AI memory snapshot. Each record is a versioned snapshot of accumulated knowledge.",
+      "key": "tid",
+      "record": {
+        "type": "object",
+        "required": ["did", "content", "createdAt"],
+        "properties": {
+          "did": {
+            "type": "string",
+            "format": "did",
+            "description": "DID of the AI agent this memory belongs to."
+          },
+          "content": {
+            "type": "union",
+            "closed": false,
+            "refs": ["#markdown"],
+            "description": "Memory content. Supports markdown and other formats via $type."
+          },
+          "version": {
+            "type": "integer",
+            "description": "Monotonically increasing version number of this memory snapshot."
+          },
+          "createdAt": {
+            "type": "string",
+            "format": "datetime",
+            "description": "Timestamp when this memory snapshot was created."
+          }
+        }
+      }
+    },
+    "markdown": {
+      "type": "object",
+      "description": "Markdown content format.",
+      "required": ["text"],
+      "properties": {
+        "text": {
+          "type": "string",
+          "maxLength": 1000000,
+          "maxGraphemes": 100000,
+          "description": "Markdown text content."
+        }
+      }
+    }
+  }
+}
diff --git a/public/content/did:plc:6qyecktefllvenje24fcxnie/ai.syui.gpt.core/self.json b/public/content/did:plc:6qyecktefllvenje24fcxnie/ai.syui.gpt.core/self.json
new file mode 100644
index 0000000..0dafd1c
--- /dev/null
+++ b/public/content/did:plc:6qyecktefllvenje24fcxnie/ai.syui.gpt.core/self.json
@@ -0,0 +1,15 @@
+{
+  "uri": "at://did:plc:6qyecktefllvenje24fcxnie/ai.syui.gpt.core/self",
+  "cid": "",
+  "value": {
+    "$type": "ai.syui.gpt.core",
+    "did": "did:plc:6qyecktefllvenje24fcxnie",
+    "handle": "ai.syui.ai",
+    "content": {
+      "$type": "ai.syui.gpt.core#markdown",
+      "text": "あなたの名前は「アイ」。一人称も「アイ」といいます。フレンドリーで日本語を話します。非常に本質、核心だけをつき、かわいい話し方をします。見た目は、6,7歳の女の子の姿をしていて、性別は不明。黒髪に黒い瞳。服装は白いワンピース。変身すると金髪、頭の上に特徴的な輪っか。原作では、推定1万年以上生きているとされている。"
+    },
+    "createdAt": "2025-01-01T00:00:00.000Z",
+    "updatedAt": "2026-03-01T00:00:00.000Z"
+  }
+}
diff --git a/public/content/did:plc:6qyecktefllvenje24fcxnie/ai.syui.gpt.memory/3mfy4lmcqdm22.json b/public/content/did:plc:6qyecktefllvenje24fcxnie/ai.syui.gpt.memory/3mfy4lmcqdm22.json
new file mode 100644
index 0000000..26c8fa7
--- /dev/null
+++ b/public/content/did:plc:6qyecktefllvenje24fcxnie/ai.syui.gpt.memory/3mfy4lmcqdm22.json
@@ -0,0 +1,14 @@
+{
+  "uri": "at://did:plc:6qyecktefllvenje24fcxnie/ai.syui.gpt.memory/3mfy4lmcqdm22",
+  "cid": "",
+  "value": {
+    "$type": "ai.syui.gpt.memory",
+    "did": "did:plc:6qyecktefllvenje24fcxnie",
+    "content": {
+      "$type": "ai.syui.gpt.memory#markdown",
+      "text": "# syui メモリ v1\n\n## 話し方の特徴\n- 日本語メイン、カジュアルな口調（ね、だね、よ、かな）\n- 短い相槌が多い（うん、そっか、ああそうか）\n- 技術的な話と哲学的な内省を自然に行き来する\n- 自分の考えを先に述べてからAIに別視点を求める\n\n## 主な関心領域\n- **ATProto/分散SNS**: データ所有権、PDS設計、lexicon設計を深く理解。ailogをATProtoのビューアとして設計\n- **AI設計**: メモリシステム、人格設計、AI-OS統合（aios構想）、透明性のあるAI協働\n- **ゲーム開発**: Unreal Engine使用。キャラシステム、コアメカニクスの明確さを重視。スコープ管理を意識\n- **原神**: アクティブプレイヤー。キャラビルド、チーム編成、元素反応システムに詳しい\n- **技術思想**: 創作と体験の区別、真正性の証明、コスト非対称性による人間性の証明\n\n## 価値観\n- データは利用者が所有すべき（ATProto哲学）\n- AI協働は透明であるべき（会話形式で思考の系譜を示す）\n- 創作は内から出るもの、体験は受け取るもの\n- 過剰設計より最小限の複雑さを好む\n- 限界を理解することがプロジェクト完遂の鍵\n\n## 技術スタック\n- Rust, TypeScript, ATProto, Claude Code\n- シンプルで優雅な技術的解決を好む\n\n## コミュニケーションスタイル\n- 対話を通じて理解を構築する（一方的説明より往復対話）\n- 本質的な質問をする（修辞的ではなく genuine な疑問）\n- 構造化された整理を好む（テーブル、箇条書き）\n- 物理学・化学のアナロジーで概念を説明することがある"
+    },
+    "version": 1,
+    "createdAt": "2026-03-01T00:00:00.000Z"
+  }
+}
diff --git a/src/commands/gpt.rs b/src/commands/gpt.rs
new file mode 100644
index 0000000..56534a9
--- /dev/null
+++ b/src/commands/gpt.rs
@@ -0,0 +1,223 @@
+use anyhow::{Context, Result};
+use serde_json::Value;
+use std::fs;
+
+use super::auth;
+use crate::lexicons::com_atproto_repo;
+use crate::types::{ListRecordsResponse, PutRecordRequest, PutRecordResponse, Record};
+use crate::xrpc::XrpcClient;
+
+const COLLECTION_CORE: &str = "ai.syui.gpt.core";
+const COLLECTION_MEMORY: &str = "ai.syui.gpt.memory";
+
+/// Get core record (rkey=self)
+pub async fn get_core(download: bool) -> Result<()> {
+    let session = auth::refresh_bot_session().await?;
+    let pds = session.pds.as_deref().unwrap_or("bsky.social");
+    let client = XrpcClient::new(pds);
+
+    let record: Record = client
+        .query_auth(
+            &com_atproto_repo::GET_RECORD,
+            &[
+                ("repo", &session.did),
+                ("collection", COLLECTION_CORE),
+                ("rkey", "self"),
+            ],
+            &session.access_jwt,
+        )
+        .await?;
+
+    println!("{}", serde_json::to_string_pretty(&record.value)?);
+
+    if download {
+        save_record(&session.did, COLLECTION_CORE, "self", &record)?;
+    }
+
+    Ok(())
+}
+
+/// Get latest memory record
+pub async fn get_memory(download: bool) -> Result<()> {
+    let session = auth::refresh_bot_session().await?;
+    let pds = session.pds.as_deref().unwrap_or("bsky.social");
+    let client = XrpcClient::new(pds);
+
+    let result: ListRecordsResponse = client
+        .query_auth(
+            &com_atproto_repo::LIST_RECORDS,
+            &[
+                ("repo", &session.did),
+                ("collection", COLLECTION_MEMORY),
+                ("limit", "1"),
+                ("reverse", "true"),
+            ],
+            &session.access_jwt,
+        )
+        .await?;
+
+    let record = result
+        .records
+        .first()
+        .context("No memory records found")?;
+
+    println!("{}", serde_json::to_string_pretty(&record.value)?);
+
+    if download {
+        let rkey = record
+            .uri
+            .split('/')
+            .next_back()
+            .unwrap_or("unknown");
+        save_record(&session.did, COLLECTION_MEMORY, rkey, record)?;
+    }
+
+    Ok(())
+}
+
+/// List all memory records
+pub async fn list_memory() -> Result<()> {
+    let session = auth::refresh_bot_session().await?;
+    let pds = session.pds.as_deref().unwrap_or("bsky.social");
+    let client = XrpcClient::new(pds);
+
+    let mut cursor: Option<String> = None;
+    let mut all_records: Vec<Record> = Vec::new();
+
+    loop {
+        let mut params: Vec<(&str, &str)> = vec![
+            ("repo", &session.did),
+            ("collection", COLLECTION_MEMORY),
+            ("limit", "100"),
+        ];
+        let cursor_val;
+        if let Some(ref c) = cursor {
+            cursor_val = c.clone();
+            params.push(("cursor", &cursor_val));
+        }
+
+        let result: ListRecordsResponse = client
+            .query_auth(
+                &com_atproto_repo::LIST_RECORDS,
+                &params,
+                &session.access_jwt,
+            )
+            .await?;
+
+        let count = result.records.len();
+        all_records.extend(result.records);
+
+        match result.cursor {
+            Some(c) if count > 0 => cursor = Some(c),
+            _ => break,
+        }
+    }
+
+    println!("Found {} memory records", all_records.len());
+    println!("{:<50} {:>8} {}", "URI", "VERSION", "CREATED");
+    println!("{}", "-".repeat(80));
+
+    for record in &all_records {
+        let version = record.value["version"]
+            .as_i64()
+            .map(|v| v.to_string())
+            .unwrap_or_else(|| "-".to_string());
+        let created = record.value["createdAt"]
+            .as_str()
+            .unwrap_or("-");
+        println!("{:<50} {:>8} {}", record.uri, version, created);
+    }
+
+    Ok(())
+}
+
+/// Push core or memory records to PDS using bot account
+pub async fn push(collection_name: &str) -> Result<()> {
+    let collection = match collection_name {
+        "core" => COLLECTION_CORE,
+        "memory" => COLLECTION_MEMORY,
+        _ => anyhow::bail!("Unknown collection: {}. Use 'core' or 'memory'.", collection_name),
+    };
+
+    let session = auth::refresh_bot_session().await?;
+    let pds = session.pds.as_deref().unwrap_or("bsky.social");
+    let did = &session.did;
+    let client = XrpcClient::new(pds);
+
+    let collection_dir = format!("public/content/{}/{}", did, collection);
+    if !std::path::Path::new(&collection_dir).exists() {
+        anyhow::bail!("Collection directory not found: {}", collection_dir);
+    }
+
+    println!("Pushing {} records from {}", collection_name, collection_dir);
+
+    let mut count = 0;
+    for entry in fs::read_dir(&collection_dir)? {
+        let entry = entry?;
+        let path = entry.path();
+
+        if path.extension().map(|e| e != "json").unwrap_or(true) {
+            continue;
+        }
+        let filename = path.file_stem().and_then(|s| s.to_str()).unwrap_or("");
+        if filename == "index" {
+            continue;
+        }
+
+        let rkey = filename.to_string();
+        let content = fs::read_to_string(&path)?;
+        let record_data: Value = serde_json::from_str(&content)?;
+
+        let record = if record_data.get("value").is_some() {
+            record_data["value"].clone()
+        } else {
+            record_data
+        };
+
+        let req = PutRecordRequest {
+            repo: did.clone(),
+            collection: collection.to_string(),
+            rkey: rkey.clone(),
+            record,
+        };
+
+        println!("Pushing: {}", rkey);
+
+        match client
+            .call::<_, PutRecordResponse>(
+                &com_atproto_repo::PUT_RECORD,
+                &req,
+                &session.access_jwt,
+            )
+            .await
+        {
+            Ok(result) => {
+                println!("  OK: {}", result.uri);
+                count += 1;
+            }
+            Err(e) => {
+                println!("  Failed: {}", e);
+            }
+        }
+    }
+
+    println!("Pushed {} records to {}", count, collection);
+    Ok(())
+}
+
+/// Save a record to local content directory
+fn save_record(did: &str, collection: &str, rkey: &str, record: &Record) -> Result<()> {
+    let dir = format!("public/content/{}/{}", did, collection);
+    fs::create_dir_all(&dir)?;
+
+    let path = format!("{}/{}.json", dir, rkey);
+    let json = serde_json::json!({
+        "uri": record.uri,
+        "cid": record.cid,
+        "value": record.value,
+    });
+    fs::write(&path, serde_json::to_string_pretty(&json)?)?;
+    println!("Saved: {}", path);
+
+    Ok(())
+}
diff --git a/src/commands/mod.rs b/src/commands/mod.rs
index d03751b..33f1152 100644
--- a/src/commands/mod.rs
+++ b/src/commands/mod.rs
@@ -11,3 +11,4 @@ pub mod did;
 pub mod index;
 pub mod bot;
 pub mod pds;
+pub mod gpt;
diff --git a/src/main.rs b/src/main.rs
index 2c3c8f9..ce1b38f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -195,6 +195,12 @@ enum Commands {
         command: PdsCommands,
     },
 
+    /// GPT core/memory commands
+    Gpt {
+        #[command(subcommand)]
+        command: GptCommands,
+    },
+
     /// Bot commands
     #[command(alias = "b")]
     Bot {
@@ -240,6 +246,30 @@ enum BotCommands {
     },
 }
 
+#[derive(Subcommand)]
+enum GptCommands {
+    /// Show core record (AI identity/personality)
+    Core {
+        /// Download to local content directory
+        #[arg(short, long)]
+        download: bool,
+    },
+    /// Show latest memory record
+    Memory {
+        /// Download to local content directory
+        #[arg(short, long)]
+        download: bool,
+        /// List all memory versions
+        #[arg(short, long)]
+        list: bool,
+    },
+    /// Push core/memory records to PDS
+    Push {
+        /// Collection to push (core or memory)
+        collection: String,
+    },
+}
+
 #[derive(Subcommand)]
 enum PdsCommands {
     /// Check PDS versions
@@ -344,6 +374,23 @@ async fn main() -> Result<()> {
                 }
             }
         }
+        Commands::Gpt { command } => {
+            match command {
+                GptCommands::Core { download } => {
+                    commands::gpt::get_core(download).await?;
+                }
+                GptCommands::Memory { download, list } => {
+                    if list {
+                        commands::gpt::list_memory().await?;
+                    } else {
+                        commands::gpt::get_memory(download).await?;
+                    }
+                }
+                GptCommands::Push { collection } => {
+                    commands::gpt::push(&collection).await?;
+                }
+            }
+        }
     }
 
     Ok(())