memo-ultra

memo-ultra

Context-triggered error prevention for Claude Code.

The problem isn't "knowing" a rule — it's "remembering it at the moment you're about to break it." Memory systems solve the former. memo-ultra solves the latter.

What it does

1. PreToolUse: Every time Claude is about to Edit/Write a file, memo-ultra scans the code content against a pattern library of past mistakes. If keywords match, a warning is injected into Claude's context at that exact moment.

2. Auto-capture: Every 3 conversation turns, memo-ultra scans the transcript for bug-fix signals and auto-extracts patterns into the library.

3. Manual learning: Use /memo-ultra:learn to teach it specific rules from past mistakes.

Install

From GitHub:

git clone https://github.com/shuaiyy-ux/memo-ultra.git
claude --plugin-dir ./memo-ultra

Or permanent install in a Claude Code session:

/plugin marketplace add shuaiyy-ux/memo-ultra
/plugin install memo-ultra

Commands

Command	Description
/memo-ultra:learn	Teach a new error pattern
/memo-ultra:patterns	View all patterns in the library
/memo-ultra:forget	Remove a pattern

How patterns work

Each pattern has:

• keywords: Code-level terms that trigger the pattern (e.g., ["Modal", "animationType", "sheet"])
• rule: One-line warning shown to Claude (e.g., "overlay must fade, not slide")
• source: manual (from /learn) or auto (from transcript analysis)

A pattern triggers when 2+ keywords match the code being written.

Files

memo-ultra/
├── .claude-plugin/plugin.json   # Plugin manifest
├── hooks/hooks.json             # Hook configuration
├── scripts/
│   ├── pre-check.sh             # PreToolUse: pattern matching
│   ├── post-summarize.sh        # Stop: auto-extract patterns
│   └── session-init.sh          # SessionStart: load patterns
├── commands/
│   ├── learn/COMMAND.md          # /memo-ultra:learn
│   ├── patterns/COMMAND.md       # /memo-ultra:patterns
│   └── forget/COMMAND.md         # /memo-ultra:forget
└── data/
    ├── patterns.example.jsonl    # Example patterns (shipped with repo)
    └── patterns.jsonl            # Your pattern library (gitignored, auto-created)

How it's different

Every other memory tool (claude-mem, etc.) solves "what did I do last session" — they bulk-inject summaries at session start. memo-ultra solves "I'm about to make the same mistake again" — it stays silent until the code you're writing matches a known error pattern, then surfaces the exact rule at that moment. No noise when irrelevant, instant recall when it matters.

Philosophy

Rules written in documents don't prevent mistakes. A rule only works if it appears at the exact moment someone is about to break it. memo-ultra puts past mistakes in front of Claude at the moment they're about to be repeated.