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agent-raw-rag-mcp

跨 CLI Coding Agent(Claude Code、Codex CLI、OpenCode、Oh My Pi 及 Antigravity)共用的本機 Raw-RAG 增量記憶檢索與索引服務。


1. 專案核心理念與解決痛點

傳統 Coding Agent 在處理長對話時,面臨兩大核心痛點:

  1. 消除 /compact 滾動壓縮失憶:CLI Agent 內建的 /compact(滾動式 LLM 摘要)實證會造成 21.9% 永久表徵損失(Representation Loss)。本服務在旁路以 Append-Only 保存 100% 原始對白切片,壓縮後隨時可按需無損救援。
  2. 跨 Coding Agent 記憶互通:同一個專案在 Claude Code、Codex、OpenCode、Oh My Pi 與 Antigravity 之間的架構決策、除錯脈絡與測試反覆紀錄集中索引,切換工具不斷線。
  3. 寫入端零 LLM 呼叫,讀取端免跑本機 Reader LLM:
    • 寫入端:僅執行確定性降噪(Deterministic Sanitizer)與 $O(\Delta L)$ 尾部增量切塊,完全不呼叫任何 LLM。
    • 檢索端:利用 Apple Silicon MLX 執行 Qwen3-Embedding-4B(粗排 Top-128)+ Qwen3-Reranker(精排 Top-15),展開後的完整對話回合直接交給當前宿主 Agent(Claude / GPT / Gemini)自行理解,不額外消耗本機生成模型的記憶體與 KV Cache。

2. 五大架構不變量(Architectural Invariants)

本專案嚴格遵從論文 Raw-RAG(Is Complex Agentic Memory Always Needed? Naive RAG Is Stronger Than We Thought, arXiv:2610.30755)經消融實驗證實最重要的五項原則:

flowchart TD
    %% 寫入端管線
    subgraph S1["1. 寫入管線 (Ingestion Pipeline)"]
        RAW["五大 Agent 原始對白與操作日誌<br/>(Claude / Codex / OpenCode / OMP / Antigravity)"]
        
        INV1["【不變量 1】寫入端零 LLM 呼叫 (Zero-LLM Ingestion)<br/>嚴禁呼叫 LLM 進行摘要、原子事實萃取或三元組抽取"]
        RAW --> INV1
        
        INV2["【不變量 2】確定性降噪器 (Deterministic Sanitizer)<br/>• 100% 保留 User/Assistant 對白原文<br/>• 工具呼叫壓縮為單行摘要 [Tool] target (exit_code)<br/>• 剝除 Read 原始碼與 giant diff,失敗僅留末 15 行 stderr"]
        INV1 --> INV2
        
        INV3["【不變量 3】增量尾部切塊 (Incremental Tail-Only Chunking)<br/>• 256 tokens 窗口 / 32 tokens 重疊 (cl100k_base)<br/>• 鎖定 stable_chunks,僅重切/向量化尾部未滿區塊與增量 ΔL<br/>• 同步建立 turn_spans 高精度回合映射"]
        INV2 --> INV3
    end

    %% 儲存層
    subgraph S2["2. 儲存層 (Storage Engine)"]
        DB[("SQLite + 二進位向量快取<br/>(sessions, chunks, ingestion_cursors)")]
        INV3 -->|增量寫入| DB
    end

    %% 檢索與展開管線
    subgraph S3["3. 檢索與展開管線 (Retrieval & Display Pipeline)"]
        QUERY["Agent 查詢請求 (Query)"]
        
        INV4["【不變量 4】兩階段漏斗檢索 + 時序升冪重排<br/>1. 專案 / 時間範圍預過濾<br/>2. Dense 粗排 Top-128 (Qwen3-Embedding-4B)<br/>3. Cross-Encoder 精排 Top-15 (Qwen3-Reranker-4B, 門檻 > 0.5)<br/>4. 依原始對話時序 (session, turn, token) 升冪重排"]
        QUERY --> INV4
        DB -.->|檢索索引| INV4
        
        INV5["【不變量 5】呈現期動態展開 (Display-Time Turn Expansion)<br/>• 命中切片透過 turn_spans 動態還原為完整 User/Assistant 對話回合<br/>• 自動去除跨區塊重複回合 (dedup_turns_on_display)<br/>• 0 本機 Reader LLM,直接回傳給宿主 CLI Agent 擔任 Reader"]
        INV4 --> INV5
    end

    INV5 --> OUT["回傳無損對話脈絡給宿主 CLI Agent<br/>(消除 /compact 造成的 21.9% 表徵損失)"]

    classDef inv fill:#e8f4fd,stroke:#1d70b8,stroke-width:2px,color:#0b0c0c;
    class INV1,INV2,INV3,INV4,INV5 inv;

3. 五大 Agent 原生 Discovery 與日誌支援

經實測與逆向分析各 Agent 核心機制,本服務提供全自動支援:

Coding Agent 日誌來源路徑 增量游標機制 原生 MCP 設定檔位置與規範
Claude Code ~/.claude/projects/<slug>/*.jsonl (file_path, byte_offset) ~/.claude/.mcp.json 或 settings.json(mcpServers)
Codex CLI ~/.codex/sessions/**/rollout-*.jsonl (file_path, byte_offset) ~/.codex/config.toml 之 [mcp_servers.raw_rag]
OpenCode ~/.local/share/opencode/opencode.db (opencode_db, time_updated) 唯讀游標串流 ~/.config/opencode/opencode.jsonc(mcp 節點)
Oh My Pi (omp/pi) ~/.omp/agent/sessions/<slug>/*.jsonl (file_path, byte_offset) ~/.omp/agent/mcp.json(根物件須為 mcpServers,支援 type: "stdio")
Antigravity ~/.gemini/antigravity-cli/brain/*/.system_generated/logs/transcript.jsonl (file_path, byte_offset) ~/.gemini/config/mcp_config.json 與 settings.json(mcpServers)

4. MCP Tools 與 CLI 規格

4.1 MCP Tools(標準 Stdio)

  1. raw_rag_search
    • 參數:query: str, project_path: Optional[str], agent: Optional[str], after_date: Optional[str], before_date: Optional[str], top_k: int = 15
    • 功能:執行 Dense Top-128 粗排、MLX Reranker Top-15 精排、時序升冪重排,並展開完整對話回合。
  2. raw_rag_recent
    • 參數:project_path: Optional[str], limit_turns: int = 30
    • 功能:剛開啟 Session 或執行 /compact 後,取回該專案最近 $N$ 輪完整上下文。
  3. raw_rag_ingest
    • 參數:agent: Optional[str](可選 'claude', 'codex', 'opencode', 'omp', 'antigravity')
    • 功能:手動或自動觸發增量日誌寫入與向量運算。
  4. raw_rag_status
    • 功能:回傳目前的 Sessions 數、Chunks 總數與各 Agent 分佈。

4.2 CLI 命令與 uvx 隨選執行

本套件全面支援 Astral uvx(uv tool run),免手動啟用虛擬環境即可隨選執行:

# === 1. 隨選查看資料庫索引與推論引擎即時狀態 ===
# 本機開發模式:
uvx --from /Volumes/Samsung970EVOPlus/dev-projects/agent-raw-rag-mcp raw-rag-ingest --status
# PyPI 發布模式:
uvx --from agent-raw-rag-mcp raw-rag-ingest --status

# === 2. 隨選增量掃描同步 ===
uvx --from agent-raw-rag-mcp raw-rag-ingest --agent antigravity

# === 3. 隨選啟動 stdio MCP 伺服器 ===
uvx agent-raw-rag-mcp

# === 4. macOS LaunchAgent 系統常駐服務管理 ===
raw-rag-ingest --install-daemon    # 安裝並註冊 LaunchAgent 常駐背景服務
raw-rag-ingest --daemon-status     # 檢查 LaunchAgent 常駐服務運行狀態與日誌
raw-rag-ingest --uninstall-daemon  # 停止並卸載 LaunchAgent 服務

5. 快速安裝與開發

5.1 環境需求

  • macOS(Apple Silicon M 系列晶片推薦)
  • Python >= 3.11
  • uv 套件管理器

5.2 安裝步驟

git clone https://github.com/yhsung/agent-raw-rag-mcp.git
cd agent-raw-rag-mcp

# 建立虛擬環境並安裝依賴
uv venv
source .venv/bin/activate
uv pip install -e . pytest

5.3 執行測試

# 執行全部單元與整合測試
uv run pytest -v

6. 深入文件


7. 引用與致謝(Citation & Acknowledgements)

本專案的底層記憶機制與架構依據 RAW-RAG 研究成果實作。若在研究或工程中使用本專案或原始論文,請引用原作者論文與官方專案:

  • 官方專案:Litmeb/RAW-RAG (GitHub)
  • 論文:Is Complex Agentic Memory Always Needed? Naive RAG Is Stronger Than We Thought (arXiv:2610.30755)
@misc{bao2026complexagenticmemory,
  title         = {Is Complex Agentic Memory Always Needed? Naive {RAG} Is Stronger Than We Thought},
  author        = {Bao, Zhengye and Zhang, Shengtao and Zhang, Haokai and Lou, Shiqi and Wen, Muning and Luo, Minnan},
  year          = {2026},
  note          = {arXiv preprint},
  eprint        = {2610.30755},
  archivePrefix = {arXiv},
  primaryClass  = {cs.AI},
  url           = {https://arxiv.org/abs/2610.30755}
}

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