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hypermnesia-mcp-codex

v4.23.1

Cortex persistent local-first memory for Codex: the complete tool profile and the same 11 lifecycle hooks the Claude Code plugin installs.

Codex1 MCP serverstdio

By Clement DeustLicense: MIT73 GitHub starsUpdated yesterday

Directory evidence

Runtimes
Codex
Parsed components
1 skill or MCP entry
Source updated
Sep 22, 2026
Manifest status
Canonical path parsed

The directory validates manifest shape and source location. It does not execute the plugin or provide a security endorsement. Review the indexing methodology →

Install hypermnesia-mcp-codex for Codex

Installs for the current user
codex plugin marketplace add cdeust/Cortex
codex plugin marketplace upgrade cortex-codex-plugins
codex plugin add hypermnesia-mcp-codex@cortex-codex-plugins

Paste and run these commands in a terminal with Codex. They add and refresh the cortex-codex-plugins catalog, then install this plugin.

Compatibility: the page URL and API slug “hypermnesia-mcp-codex” remain stable.

  • Codex: hypermnesia-mcp-codex@agent-plugin-marketplace → hypermnesia-mcp-codex@cortex-codex-plugins

The installer fetches third-party code from the source repository shown on this page. This directory validates manifest structure and source location, but does not perform a security audit; review the manifest, components, and source before installing.

Get the source manually
git clone https://github.com/cdeust/Cortex

Clone the source repository, then follow its setup instructions to add the plugin to a compatible client. The plugin root is plugins/hypermnesia-mcp-codex/.

Plugin files

plugins/hypermnesia-mcp-codex/
├── .codex-plugin/plugin.json
└── .mcp.json

MCP servers1

cortexstdio
command
uvx
args
--from hypermnesia-mcp[postgresql,sqlite] hypermnesia-mcp
env.CORTEX_RUNTIME
cowork

Plugin manifests1

plugins/hypermnesia-mcp-codex/.codex-plugin/plugin.json
{
  "name": "hypermnesia-mcp-codex",
  "version": "4.23.1",
  "description": "Cortex persistent local-first memory for Codex: the complete tool profile and the same 11 lifecycle hooks the Claude Code plugin installs.",
  "author": {
    "name": "Clement Deust",
    "email": "[email protected]",
    "url": "https://github.com/cdeust"
  },
  "homepage": "https://github.com/cdeust/Cortex/blob/main/docs/codex-plugin.md",
  "repository": "https://github.com/cdeust/Cortex",
  "license": "MIT",
  "keywords": [
    "memory",
    "mcp",
    "codex",
    "claude-code",
    "local-first"
  ],
  "mcpServers": "./.mcp.json",
  "hooks": "./hooks/hooks.json",
  "interface": {
    "displayName": "Cortex Memory",
    "shortDescription": "Automatic persistent memory for Codex",
    "longDescription": "Cortex gives Codex persistent memory through the complete MCP tool profile plus the 11 lifecycle hooks that record sessions, inject context at session start and on every prompt, capture significant tool output, checkpoint before compaction, and gate edits against recorded decisions. Host event payloads and timeout limits affect which hooks complete. Memory is local-first and can be shared with Claude Code through the same configured store.",
    "developerName": "Clement Deust",
    "category": "Developer Tools",
    "capabilities": [
      "Persistent project memory",
      "Automatic session capture and recall",
      "Decision and correction recall",
      "Compaction checkpoints",
      "Local-first storage",
      "Memory inspection"
    ],
    "websiteURL": "https://github.com/cdeust/Cortex",
    "privacyPolicyURL": "https://github.com/cdeust/Cortex/blob/main/PRIVACY.md",
    "termsOfServiceURL": "https://github.com/cdeust/Cortex/blob/main/LICENSE",
    "defaultPrompt": [
      "Recall the decisions relevant to this repository.",
      "Show what Cortex remembers about this project.",
      "Store the durable lesson from this task."
    ],
    "composerIcon": "./assets/icon.svg",
    "logo": "./assets/icon.svg",
    "screenshots": [
      "./assets/screenshot-overview.png",
      "./assets/screenshot-benchmarks.png"
    ]
  }
}

For maintainers

If you maintain this plugin, link to this source-backed listing from your README so users can review its manifest and indexed components.

[hypermnesia-mcp-codex on Agent Plugins Marketplace](https://pluginsmp.com/plugins/hypermnesia-mcp-codex)