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codex-memento

v0.2.1

Published

8 days ago

Amnesia insurance for Codex: injects your project's Markdown memory index into context compaction, so auto-summarization never forgets that memory exists. Zero dependencies.

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codex codex-cli openai memory compaction context

codex-memento

Amnesia insurance for Codex CLI.

Part of the leonard-memento family.

How it works

A SessionStart hook with matcher ^compact$ fires after manual /compact and after auto-compaction — including mid-turn compaction, where Codex delivers the hook's context to the immediate continuation. The hook prints the project's memory index as hookSpecificOutput.additionalContext, so the index is back in context immediately after compaction.

Install

npm i -g @leonard-memento/core codex-memento
memento init codex

memento init codex writes a SessionStart hook entry into .codex/hooks.json that runs codex-memento hook. It is idempotent and preserves every foreign key and hook entry.

Codex gates hooks behind a trust review: open /hooks in the session and approve the new entry (a changed command needs re-approval). Project-local .codex/ hooks additionally require trusting the project layer when Codex asks.

Verify

Create an index: memento path shows where MEMORY.md lives for the project; write a few - [[name]] — description lines.
Run /compact.
The session should regain a # Project memory index (…) block.

Configuration

Same as the family core: MEMENTO_MEMORY_ROOT overrides the memory root (fallback chain: ~/.config/memento/projects → legacy ~/.config/opencode/memento/projects), MEMENTO_INDEX_FILE overrides the index file name (MEMORY.md).