---
name: reindex
description: "Re-index the GitNexus knowledge graph via CLI (gitnexus). CLI ONLY - NO MCP server exists, never use readMcpResource with gitnexus:// URIs. TRIGGERS - reindex, refresh index, update knowledge graph, $GN analyze."
allowed-tools: Bash, Read
model: haiku
---

# GitNexus Reindex

> **CLI ONLY — no MCP server exists. Never use `readMcpResource` with `gitnexus://` URIs.**

Re-index the current repository's GitNexus knowledge graph and verify the updated stats.

> **Self-Evolving Skill**: This skill improves through use. If instructions are wrong, parameters drifted, or a workaround was needed — fix this file immediately, don't defer. Only update for real, reproducible issues.

## When to Use

- After significant refactors (5+ files changed)
- When staleness hook reports index is behind
- After merging a large PR
- "Refresh the knowledge graph"

## Workflow

### Step 0: Pre-flight — Ensure CLI Is Callable

The `gitnexus` binary is installed via npm/mise. The mise shim may fail if node isn't active in the current project. Run this pre-flight before any gitnexus command:

```bash
# Test if gitnexus is actually callable (not just a broken shim)
gitnexus --version 2>/dev/null || mise use node@25.8.0
```

All commands below run from the repo root. If multiple repos are indexed in the workspace, add `--repo <repo-name>` to specify the target. Otherwise `--repo` is optional.

### Step 1: Check Current Status

```bash
gitnexus status
```

If already current (lastCommit matches HEAD), report "Index is up to date" and stop.

### Step 2: Run Indexer

```bash
gitnexus analyze
```

Use `--force` if the index appears corrupted or if a normal analyze doesn't pick up changes:

```bash
gitnexus analyze --force
```

This may take 30–120 seconds depending on codebase size.

### Step 3: Verify New Index

```bash
gitnexus status
```

### Step 4: Report Stats

Present the updated stats:

```
## GitNexus Reindex Complete

| Metric      | Before | After |
| ----------- | ------ | ----- |
| Nodes       | ...    | ...   |
| Edges       | ...    | ...   |
| Communities | ...    | ...   |
| Flows       | ...    | ...   |
| Last Commit | ...    | ...   |

Index is now current with HEAD.
```

## Notes

- The `analyze` command runs locally — no network calls
- KuzuDB database is stored in `.gitnexus/` at the repo root
- Large codebases (10k+ files) may take 2+ minutes
- The `--force` flag rebuilds from scratch; without it, incremental analysis is used


## Post-Execution Reflection

After this skill completes, reflect before closing the task:

0. **Locate yourself.** — Find this SKILL.md's canonical path before editing.
1. **What failed?** — Fix the instruction that caused it.
2. **What worked better than expected?** — Promote to recommended practice.
3. **What drifted?** — Fix any script, reference, or dependency that no longer matches reality.
4. **Log it.** — Evolution-log entry with trigger, fix, and evidence.

Do NOT defer. The next invocation inherits whatever you leave behind.