Memex Plugin for Codex

This is the Codex plugin for Memex.Garden, a bookmarking second brain for humans and agents.

You can save, transcribe, summarize and search anything you come across. Websites, notes, web highlights, YouTube, X, TikTok, Instagram, PDFs, Reddit or images. Here is our Privacy Policy and our docs.

How to install

1. Download the plugin
2. Extract the zip, or clone this repo and use it directly.
3. Start Codex from the extracted directory or repo root.
4. Open Codex's plugin directory.
5. Select the Memex Plugins marketplace.
6. Install memex-codex.
7. Export credentials before launching Codex, then restart Codex if needed.
8. You're done. You can now use Memex inside Codex.

Example prompts

1. Search my Memex library for pages about MCP authentication and summarize the top results.
2. Save https://docs.memex.garden/general/authentication into Memex, and tag it with #tutorials

Authentication

The default hosted Memex MCP endpoint is:

• https://api.memex.garden/mcp

For a local Codex plugin checkout like this repo, you authenticate by exporting environment variables before launching Codex.

Bearer token mode:

export MEMEX_BEARER_TOKEN="YOUR_OAUTH_ACCESS_TOKEN"

The plugin also supports API keys as an optional alternative for local setups and testing:

export MEMEX_API_KEY="YOUR_MEMEX_API_KEY"
export MEMEX_USER_ID="YOUR_MEMEX_USER_ID"

Optional override:

export MEMEX_API_BASE_URL="https://api.memex.garden"

Auth precedence:

• MEMEX_BEARER_TOKEN is used first when present
• otherwise the plugin uses MEMEX_API_KEY
• MEMEX_USER_ID is optional
• MEMEX_API_BASE_URL defaults to https://api.memex.garden

Canonical auth docs:

• Authentication

If a client asks for the raw MCP server URL instead of using this local plugin bundle, use the literal hosted URL https://api.memex.garden/mcp.

Reviewer notes

Behavior and disclosures:

• The plugin sends Memex-authenticated requests to the hosted Memex MCP server.
• The plugin does not bundle local model inference or a local MCP wrapper.
• The skill is scoped to Memex library search and Memex URL saves.
• The repo bundles a local Codex marketplace file at .agents/plugins/marketplace.json that points to ./memex-codex.
• The plugin uses the same public Memex docs as other Memex agent integrations:
  • Available endpoints
  • Response shape
  • Buy credits