llmwiki-sync

What this skill does

The user maintains a Karpathy-style LLM Wiki — a local, file-based knowledge base compiled from their Claude Code (and Codex CLI) session transcripts.

This skill runs the full sync pipeline:

~/.claude/projects/*/*.jsonl         (raw session transcripts)
        │
        ▼   python3 -m llmwiki sync
llmwiki/raw/sessions/<proj>/*.md     (Karpathy layer 1 — immutable markdown)
        │
        ▼   /wiki-ingest              (Claude in the loop)
llmwiki/wiki/sources, entities,      (Karpathy layer 2 — LLM-maintained wiki)
              concepts, syntheses
        │
        ▼   python3 -m llmwiki build
llmwiki/site/                         (Karpathy layer 3 — static HTML)

When to use

Invoke this skill when the user:

• Says "sync the wiki", "update llmwiki", "ingest recent sessions", "refresh the knowledge base"
• Asks a knowledge question that would benefit from the latest sessions ("what have I been working on this week?") — run sync first, then /wiki-query
• Starts a new project and wants context from past work
• Says "what's new" or "catch me up" in a context where session history matters

Do NOT invoke when:

• The user is asking a question unrelated to their own work
• The tool is not installed (check for llmwiki/ directory first)

Workflow

1. Locate the llmwiki install. Check the current working directory and common locations:

• ./ (if cwd contains llmwiki/ package)
• ~/Desktop/2026/production-draft/llmwiki/
• ~/llmwiki/
• $LLMWIKI_HOME environment variable

If you can't find it, tell the user and stop.

1. Run the converter (idempotent — safe to re-run):

bash cd <llmwiki-dir> python3 -m llmwiki sync Capture the summary line: N converted, M unchanged, K live, J filtered, X errors.

1. If N == 0, report that the wiki is up to date and stop.

1. If N > 0, ingest the new files into the wiki using the Ingest Workflow from the repo's CLAUDE.md. Process one project at a time. If more than 20 new files, ask the user whether to process all or a subset first.

1. Append to wiki/log.md:

## [YYYY-MM-DD] sync | <N> sessions across <M> projects

1. Report what was converted, which wiki pages were created or updated, and any contradictions flagged.

Options

The converter supports flags the user may want:

bash
python3 -m llmwiki sync --project <substring>       # only one project
python3 -m llmwiki sync --since 2026-04-01          # only recent
python3 -m llmwiki sync --include-current           # include <60min live
python3 -m llmwiki sync --force                     # ignore state, reconvert all
python3 -m llmwiki sync --dry-run                   # preview without writing

Hook installation (optional, for auto-sync)

If the user wants the converter to run automatically on every Claude Code session start, offer to add this to ~/.claude/settings.json:

json
{
  "hooks": {
    "SessionStart": [
      {
        "hooks": [
          {
            "type": "command",
            "command": "(python3 /absolute/path/to/llmwiki/tools/sessions_to_markdown.py > /tmp/llmwiki-sync.log 2>&1 &) ; exit 0"
          }
        ]
      }
    ]
  }
}

The ( ... &) ; exit 0 pattern ensures the hook runs in the background and never blocks session start.

Troubleshooting

• Permission errors on raw/: the converter writes to llmwiki/raw/sessions/. Make sure the repo is writable.
• Nothing converted, only "live": the default 60-minute live filter is skipping recent sessions. Pass --include-current to override, or wait an hour.
• Converter says "module 'tomllib' not found": stale source. Update to the current version (tools/sessions_to_markdown.py uses json, not tomllib).
• Privacy: the converter redacts username, API keys, tokens, and emails by default. If you see unredacted PII, check examples/sessions_config.json → redaction.real_username.