可以使用的MCP览剭器

One prerequisite: Docker

claude-dejavu auto-provisions Postgres + Weaviate via Docker. Install it first, then everything below is automatic.

(If you already have your own Postgres + Weaviate running, the plugin will detect them on common ports — Docker is only required for the bundled stack.)

Dependencies

Required (open source)

Installed automatically by scripts/install.py into the dejavu-owned venv: psycopg2-binary, mcp, tree-sitter, tree-sitter-languages, pyyaml.

Install

What the Setup hook actually does

1. Verifies Docker is installed AND running — three-state probe (absent / daemon-down / ok). If Docker Desktop is installed but not started, you'll see "Launch Docker Desktop" in the Claude chat, not a buried terminal error. 2. Detects Postgres + Weaviate on common ports, with shape verification (a SearXNG on port 8889 won't pose as Weaviate). If nothing is found, auto-provisions them via the bundled docker-compose.minimal.yml. 3. Creates a per-Linux-user database claude_dejavu_$USER (use --shared for trusted teams). 4. Bootstraps a Python venv and installs psycopg2-binary, mcp, tree-sitter==0.21.3, and tree-sitter-languages==1.10.2. 5. Normalizes .mcp.json + hooks/hooks.json to the OS-correct python command (python3 on Linux/macOS, python on Windows). 6. Symlinks the claude-dejavu CLI into ~/.local/bin/ (or %LOCALAPPDATA%\Microsoft\WindowsApps\claude-dejavu.bat on Windows). 7. No systemd, no launchd, no Task Scheduler — snapshots are Stop-hook-driven.

The installer is cross-platform: Linux, macOS, Windows (native + WSL). All hooks, the MCP server, and the CLI are pure Python.

Slash commands available after install

Search + recovery

Backup + rescue

Grounding + introspection

Context economy (v0.8.4 → v0.8.6)

Install or runtime trouble? See docs/TROUBLESHOOTING.md for common errors (Docker not running, port conflicts, stale install cache, Windows-specific notes) and how to fix each one. Always start with /dejavu-doctor — it auto-diagnoses and prints copy-pasteable fix commands for every failed check.

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example: install from a local artifact directory

export DEJAVU_BRIDGE_INDEX_URL=file:///path/to/wheels/ python3 scripts/install.py --auto ```

If the wheel can't be fetched, install proceeds in standard mode — the in-tree stub takes over automatically. SessionStart announces the active mode in stderr; check with claude-dejavu doctor.

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I have nothing — guide me through it

See docs/INSTALL.md for the complete platform-by-platform guide. Covers macOS, Linux (Ubuntu / Fedora / Arch), Windows native, and Windows + WSL2. Assumes zero prior Docker / Postgres knowledge.

Optional: `dejavu_bridge` (binary performance wheel)

Starting in v0.8.6 (Context Economy phase 3) claude-dejavu can use the dejavu_bridge Python wheel — a pre-compiled Rust binary that ships six retrieval primitives (gist compression, token-budget retrieval, semantic cache lookup, RRF fusion, ingest gate, topic re-rank). The wheel is a performance addon, not a core feature.

Both modes ship every MCP tool, the full search surface, vector indexes, learned ranker, etc. The bench corpus has been running at 8/8 across all three dejavu tools throughout development in standard mode. Switching to optimized mode is purely a "make it faster / smaller" move, not a "unlock features" one.

Install path. By default the installer attempts to fetch the binary wheel from the public release artifacts of the claude-dejavu repo. Override via DEJAVU_BRIDGE_INDEX_URL for a local mirror, your own build, or a custom CDN:

```bash

CLI quick reference

```bash

How it differs from other Claude Code memory plugins

claude-dejavu now ships claude-mem's three killer features under a fair-source license — LLM session summaries, typed observations, SessionStart context injection (v0.2) — plus its own unique deletion-recovery + lossless-audit features.

For corporate teams whose legal policy forbids AGPL-3.0's copyleft contagion, dejavu's FSL is the clean answer: internal use is unrestricted, no source-disclosure obligation, and each version converts to Apache 2.0 two years after release. Commercial license available for use cases that fall outside FSL's Permitted Purpose — see COMMERCIAL.md.

See docs/VS_CLAUDE_MEM.md for measured latency, recall, and response richness numbers from a head-to-head benchmark.

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Alternative: standalone (no Claude Code plugin)

For CI environments, dev forks, or distros without the claude CLI:

git clone https://github.com/HthSolid/claude-dejavu
cd claude-dejavu
python3 scripts/install.py --register-mcp

--register-mcp writes a manual claude-dejavu entry to ~/.claude/settings.json so Claude Code can find the MCP server without the plugin path. Don't use --register-mcp if you've already installed via the marketplace — it'll create a duplicate registration. The standalone installer also detects existing marketplace installs and skips its own MCP registration in that case.