Codex

The Codex plugin recalls relevant notes when you send a prompt, syncs your markdown docs into HydraDB, and saves conversations as durable memories, the same behavior and the same engine as the Claude Code plugin. The JSON config keys, capture/search/ingest modes, and environment variables are identical; only the install flow differs.

Install the plugin

git clone https://github.com/hydra-db/hydradb-codex-plugin.git
cd hydradb-codex-plugin
make bootstrap

Requires Node.js 18+ and npm. Then add a local marketplace entry in your project’s .agents/plugins/marketplace.json pointing at this plugin folder and enable it in .codex/config.toml. See the Codex plugin docs for the current install flow.

Get credentials

Create an API key from the HydraDB dashboard
Create or copy your database ID from the HydraDB dashboard

Set environment variables

export HYDRADB_API_KEY="your-api-key"
export HYDRADB_DATABASE="your-database"
export HYDRADB_COLLECTION=""

Set HYDRADB_COLLECTION to an empty string for the default collection, or a workspace-specific value for project-isolated memory.

The commands, modes, and config variables on the Claude Code page apply to Codex unchanged.

Feedback and contributions

This plugin is open source. Feel free to raise an issue or contribute on GitHub.

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Feedback and contributions