Bibliography Validation

Read-only skill. Never edit source files — produce a categorised report only.

Citation key rule: the user's existing keys always take precedence. They come from Paperpile (his reference management system) and are canonical. When suggesting replacements (typo corrections, preprint upgrades, metadata fixes), always keep the user's key and update the .bib entry metadata around it — never suggest renaming a key to match some "standard" format.

When to Use

• Before compiling a final version of a paper
• After adding new citations to check nothing was missed
• When biber/bibtex reports undefined citations
• As part of a pre-submission checklist (pair with /proofread)

When NOT to Use

• Finding new references — use /literature for discovery
• Building a bibliography from scratch — use /literature with .bib generation
• General proofreading — use /proofread (which also flags citation format issues)