Check Links

Check documentation links

Run the helper script to find broken links, then present results and offer fixes.

Inputs

• $ARGUMENTS — optional docs directory (defaults to current directory) and optional --external flag to validate external URLs

Steps

1. Run the helper script

python scripts/extract_links.py $ARGUMENTS

If the user included --external, pass it through. Capture the JSON output.

The script handles file discovery, link extraction (Markdown, reference-style, HTML), internal link validation, anchor checking, and optional external URL checking.

Max 200 files per run. External checks limited to 50 URLs.

2. Handle errors

If the JSON contains an error field:

• not_a_directory — tell user the specified path is not a valid directory
• no_docs_found — tell user no .md/.mdx files were found, suggest a different path

Stop here on error.

3. Present the link report

Show a summary from the summary object:

• Files scanned (files_scanned)
• Total links found, broken down: internal, anchors, images, external
• If files_truncated is true, note that the file limit was reached

Then group broken links by type:

Broken internal links (broken_internal array):

• Show file path and line number
• Show the link text and target
• Show the reason (e.g., "Target file does not exist", "Anchor not found")
• If suggestions are available, show them as recommended replacements
• If available_anchors are listed, show the valid anchors for the target file

Broken external links (broken_external array):

• Show file path, line number, and target URL
• Show HTTP status code and reason

Redirects (redirects array):

• Show file path, line number, target URL, and HTTP status code
• Suggest updating the URL to the redirect target

Orphaned pages (orphaned_pages array):

• List doc files not linked from any other doc (excluding README.md and index files)
• These may be unreachable from navigation

4. Offer fixes for broken internal links

For each broken internal link that has suggestions:

• Show the suggested fix
• Ask if the user wants to apply it

For broken internal links without suggestions:

• Offer to remove the link (replace with plain text) or skip

5. Apply fixes

Use the Edit tool to update links in place:

• Preserve the link text unchanged
• Only change the link target
• For anchor fixes, update only the anchor portion
• For file path fixes, replace the full path with the suggested file
• For redirects, replace the old URL with the redirect destination

After applying fixes, summarize what was changed:

• Number of links fixed
• Number of links skipped for manual review

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: ekline-io
• Source: ekline-io/ekline-docs-skills
• License: MIT

Install and usage instructions live in the source repository linked above.