What is the key difference between Cortex Plugin and Deja Vu?

Cortex Plugin belongs to the Knowledge & Memory category with local stdio execution, while Deja Vu belongs to the Knowledge & Memory category with local stdio execution.

How do I install Cortex Plugin or Deja Vu in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are Cortex Plugin and Deja Vu free or paid?

Cortex Plugin operates under a Free / Open Source model (No auth required). Deja Vu operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Cortex Plugin lists 6 tools with 1 views and 31 GitHub stars. Deja Vu lists 6 tools with 1 views and 609 GitHub stars.

Can I use both Cortex Plugin and Deja Vu together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

How do I install Cortex Plugin or Deja Vu in Claude Desktop, Cursor, or Windsurf?

Both servers follow the standard Model Context Protocol configuration format. Simply copy the JSON block from the configuration section above and paste it into your AI client's mcpServers configuration object (for instance in claude_desktop_config.json or ~/.cursor/mcp.json ), then completely restart or refresh the application.

Are Cortex Plugin and Deja Vu free to use, or do they require API keys?

Cortex Plugin is listed under a Free / Open Source model with No auth required . Deja Vu operates under a Free / Open Source model with No auth required . If environment variables are required (such as API keys), be sure to define them under the env key in your MCP client's configuration file.

Can I run both Cortex Plugin and Deja Vu at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both tt-wang-cortex-plugin and vshulcz-deja-vu as distinct keys inside the single mcpServers object in your configuration file. Your AI assistant will automatically select and call the appropriate tool from either server during chat sessions.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, Cortex Plugin has a Quality Score of 55 /100 ( Good ) with 1 views, 0 installs, and 31 GitHub stars. Deja Vu holds a Quality Score of 53 /100 ( Good ) with 1 views, 0 installs, and 609 GitHub stars.

Side-by-Side Model Context Protocol Comparison

Cortex Plugin vs Deja Vu

In-depth architectural comparison of the Cortex Plugin and Deja Vu MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

Cortex Plugin

Knowledge & Memory · Local stdio

Quality: 55/100 (Good) | Auth: No auth required

Deja Vu

Knowledge & Memory · Local stdio

Quality: 53/100 (Good) | Auth: No auth required

Verdict Summary: Choose Cortex Plugin if you need specialized Knowledge & Memory tools running via a local process. Choose Deja Vu if your workspace requires Knowledge & Memory integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose Cortex Plugin when:

You need dedicated capabilities in the Knowledge & Memory domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
You have access to required keys: MEMEM_TELEMETRY_SOURCE.
Primary tools included: Event-triggered background miner extracting durable lessons from conversations, Stores memories as markdown files in a local Obsidian vault, Active Memory Slice assembling query-tailored context briefings.

Explore Cortex Plugin Details

Choose Deja Vu when:

You need dedicated capabilities in the Knowledge & Memory domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: Zero-dependency single binary, fully local operation, Search 3.5 GB of session history in ~1.5 ms, Supports multiple coding agents via MCP protocol.

Feature & Specification Comparison

Specification	Cortex Plugin TT-Wang Knowledge & Memory	Deja Vu vshulcz Knowledge & Memory
Summary	Persistent, self-evolving memory plugin for Claude Code. Background miner extracts durable lessons (decisions, conventions, bug fixes) from completed sessions via Claude Haiku, stores them as human-readable markdown in an Obsidian vault, and assembles query-tailored context briefings at session start. Local-first, no cloud, no API keys. Self-healing install via uv bootstrap shim, /cortex-doctor preflight, graceful FTS-only degraded mode when claude CLI missing. MIT.	Local memory layer over the session histories coding agents already write (Claude Code, Codex CLI, opencode): lexical search, recall tools, session-start auto-recall, secret redaction at index time, cross-machine sync over SSH.
Category & Scope

Tools & Capabilities Breakdown

Cortex Plugin Tools (6)

Event-triggered background miner extracting durable lessons from conversations

Stores memories as markdown files in a local Obsidian vault

Active Memory Slice assembling query-tailored context briefings

Path-scoped memory retrieval auto-derived from session file paths

Persistent FTS5 transcript search index for efficient memory lookup

Self-healing install and degraded mode when dependencies are missing

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

Cortex Plugin Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "tt-wang-cortex-plugin": {
      "command": "pipx",
      "args": [
        "install",
        "memem"
      ],
      "env": {
        "MEMEM_TELEMETRY_SOURCE": "YOUR_MEMEM_TELEMETRY_SOURCE_HERE"
      }
    }
  }
}

Deja Vu Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "vshulcz-deja-vu": {
      "command": "npx",
      "args": [
        "-y",
        "@vshulcz/deja-vu"
      ]
    }
  }
}

Frequently Asked Questions

Cortex Plugin is categorized under Knowledge & Memory and uses a local stdio subprocess. In contrast, Deja Vu belongs to Knowledge & Memory using local stdio subprocess. Select Cortex Plugin when you need capabilities focused on knowledge & memory and Deja Vu when you require tools for knowledge & memory.

More alternatives to Cortex Plugin More alternatives to Deja Vu Knowledge & Memory category hub