A local retrieval-augmented generation server using the Model Context Protocol, a standard way for AI clients to connect to tools and data. It runs on the user’s machine and uses a configured knowledge-base path.

Use it to run a local knowledge-retrieval service for compatible AI clients and point it at a chosen knowledge-base directory.

It lets multiple local AI clients access information from a shared local knowledge base instead of keeping separate copies or connections.

cortex — MCP server by VBlackJack

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods

npx agentmods add mcp/vblackjack/cortex/cortex

Clone the repo

git clone --depth 1 https://github.com/VBlackJack/Cortex

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Per session not measured What this adds to a session before it is invoked.

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

cortex scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured today.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

server.json · 11 lines

What it actually says

{
  "cortex": {
    "command": "uvx",
    "args": [
      "cortex-local-rag"
    ],
    "env": {
      "CORTEX_KB_PATH": ""
    }
  }
}

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

today First seen · 11 lines scan A 980b08c1c618

Subscribe to this mod's changes

cortex is an MCP server published in the GitHub repository VBlackJack/Cortex (0 stars, last pushed yesterday), licensed Apache-2.0. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Data and AI Languages chromadb claude embeddings local-first mcp model-context-protocol

cortex

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

Other mcp servers, from other repositories

exocortex

mcp-docsearch

cc-history

tabnexus

connapse

NOUZ-MCP