---
name: check-links
description: Find broken wiki-links in the vault. Read-only analysis — scans for [[links]] and verifies target files exist. No writes, no dependencies.
allowed-tools: Grep, Glob, Read
user-invocable: true
---
# Check Links Skill
Finds broken `[[wiki-links]]` across your vault by extracting link targets and verifying that each target file exists. Read-only — never modifies files.
## Usage
```
/check-links
```
Or ask:
- "Check for broken links in my vault"
- "Find dead wiki-links"
- "Are there any broken links?"
## How to Execute
### Step 1: Extract all wiki-links
Use **Grep** to find all `[[...]]` patterns in markdown files:
```
Grep:
pattern: "\\[\\[([^\\]|]+)"
glob: "*.md"
output_mode: content
-n: true
```
This captures the link target (before any `|` alias). Exclude `.claude/` and `.obsidian/` directories from results.
### Step 2: Build unique target list
From the grep results, extract the unique link targets. For each match like `[[My Note]]` or `[[My Note|display text]]`, the target is `My Note`.
Strip:
- Heading anchors: `[[Note#heading]]` → target is `Note`
- Block references: `[[Note^block-id]]` → target is `Note`
- Aliases: `[[Note|alias]]` → target is `Note`
### Step 3: Verify each target exists
For each unique target, use **Glob** to check if a matching file exists:
```
Glob:
pattern: "**/<target>.md"
```
A link is **broken** if no file matches. A link is **valid** if at least one file matches.
### Step 4: Report results
Group broken links by source file:
```markdown
## Broken Links Report
### Daily Notes/2024-01-15.md
- [[Projet Alpha]] — no matching file found
- [[Old Goal]] — no matching file found
### Projects/Project Beta.md
- [[Meeting Notes Jan]] — no matching file found
---
**Summary:** 3 broken links across 2 files (out of 45 total links checked)
```
### Step 5: Suggest fixes
For each broken link, try to find a close match:
1. Use **Glob** with a partial pattern: `**/*<partial-target>*.md`
2. If a similar filename exists, suggest it:
```
- [[Projet Alpha]] — Did you mean [[Project Alpha]]?
```
3. If no close match, just report "no matching file found"
## Edge Cases
- **Embedded images** (`![[image.png]]`) — skip these, they reference attachments
- **External links** (`[text](https://...)`) — skip these, they are not wiki-links
- **Template placeholders** (`[[{{date}}]]`) — skip anything with `{{` in the target
- **Empty links** (`[[]]`) — report as malformed, not broken
## No Broken Links
If all links are valid:
```
✅ All wiki-links verified — no broken links found across X files (Y links checked)
```
## Tips
- Run `/check-links` periodically to catch link rot
- After renaming files, run this to find links that need updating
- Combine with `/search` to find notes that reference deleted content