---

name: link-validation description: Universal link validation using lychee for Claude Code sessions. Runs at session end to detect broken links and path policy violations. triggers:

• link validation
• broken links
• lychee
• check links
• markdown links

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Link Validation Skill

Validates markdown links in your workspace using lychee.

What It Does

At session end (Stop hook), this skill:

1. Discovers all markdown files in your workspace
2. Runs lychee to check for broken links
3. Lints paths for policy violations (absolute paths, excessive traversal)
4. Outputs JSON results for programmatic consumption

Requirements

• lychee installed (brew install lychee)
• Python 3.11+ and uv

Output

Results are written to .link-check-results.md in your workspace:

# Link Check Results

**Correlation ID**: `01JEGQXV8KHTNF3YD8G7ZC9XYK`

## Lychee Link Validation

No broken links found.

## Path Policy Violations

No path violations found.

Path Policy Rules

Rule	Severity	Description
NO_ABSOLUTE_PATHS	Error	Filesystem absolute paths not allowed
NO_PARENT_ESCAPES	Warning	Excessive ../ may escape repository
MARKETPLACE_RELATIVE	Warning	Plugins should use ./ relative paths

Configuration

Override the default lychee config by placing .lycheerc.toml in your workspace root.

See config/lychee.toml for the default configuration.

References

• ADR: Link Checker Plugin Extraction
• Design Spec
• lychee Documentation