# Citation Verification

> Verify academic citations, references, BibTeX entries, DOI/PMID metadata, citation claims, and figure/table evidence before manuscript submission, review response, or report delivery. Use when citation existence or claim support matters more than citation formatting alone.

- Skill: `yuukias/citation-verification` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add yuukias/citation-verification`
- Raw SKILL.md: https://api.skillmd.com/api/skills/yuukias/citation-verification/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Docs & Writing
- Author: YuukiAS (https://skillmd.com/u/yuukias)
- Updated: 2026-09-21
- Page: https://skillmd.com/skills/yuukias/citation-verification

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# Citation Verification

Use this as a verification gate. Formatting a bibliography is not enough; check whether the cited source exists and supports the claim being made.

## Workflow

1. Inventory all citation-bearing artifacts: manuscript, slides, figures, tables, BibTeX, references, captions, and supplementary files.
2. Classify citation checks:
   - existence: DOI, PMID, arXiv ID, URL, title, authors, year;
   - metadata consistency: BibTeX fields match authoritative metadata;
   - claim support: the cited source actually supports the sentence or panel;
   - placeholder risk: missing references, `TODO`, fake-looking DOIs, malformed keys;
   - citation drift: cited paper supports a narrower or different claim.
3. Prefer authoritative sources when available: publisher page, Crossref, PubMed, OpenAlex, arXiv, official repository, or the source PDF.
4. Record uncertainty. If online verification is unavailable, mark the citation `unverified`, not `valid`.
5. Output a table with `citation`, `location`, `check_type`, `status`, `evidence`, and `fix`.

## Boundaries

- Do not fabricate missing metadata.
- Do not silently replace citations with unrelated papers.
- Do not claim a citation supports a method/result unless the relevant passage was checked.
- If an API key or network access is unavailable, run structural checks and report the limitation.

## Hand Off

- Use `citation-management` for BibTeX generation, metadata cleanup, duplicate repair, style formatting, and reference-library hygiene.
- Use `research-lookup` when verification shows a missing or stale citation and the next step is to find current candidate sources.
- Use `paper-workflow-orchestrator` when citation issues imply a larger manuscript-claim problem.
- Use `literature-review` when a missing citation requires field-level synthesis or related-work coverage.