citation-verifier SKILL.md skillA
citation-verifier from jkitchin/knowhow is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add jkitchin/knowhow/citation-verifier@git:20260130.a88fc7ePins git:20260130.a88fc7e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- jkitchin/knowhow
- Path
skills/citation-verifier/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260130.a88fc7e, committed Jan 30, 2026
- Size
- 8,859 bytes
- Repository stars
- 42
- License
- MIT
Verify citations and references in scientific documents to detect hallucinated or invalid sources. Extracts DOIs, URLs, arXiv IDs, PubMed IDs, and ISBNs from Markdown, LaTeX, org-mode, and plain text, then validates them using API lookups and web fetches. Use this skill when: - Reviewing AI-generated content for citation accuracy - Validating references in papers, reports, or documentation - Checking if DOIs/URLs resolve to actual papers - Auditing a document for broken or fake citations.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Citation Verifier
Detect and verify citations in scientific documents to identify hallucinated, broken, or invalid references.
## Purpose
AI-generated content sometimes includes plausible-looking but fake citations. This skill systematically extracts all citation identifiers from a document and verifies each one against authoritative sources, producing a detailed report with verification status and suggestions for fixing invalid citations.
## When to Use
This skill should be invoked when:
- User asks to "verify citations" or "check references" in a document
- User suspects hallucinated citations in AI-generated content
- User wants to validate DOIs, URLs, or other identifiers in a paper
- User asks to audit a document for broken links or fake references
- User mentions "citation verification", "reference checking", or "DOI validation"
## Supported Document Formats
1. **Markdown** (.md): Inline links `[text](url)`, reference links `[text][ref]`, bare URLs, DOIs
2. **LaTeX/BibTeX** (.tex, .bib): `\cite{}`, `@article{}`, DOI fields, URL fields
3. **Org-mode** (.org): `[[url][text]]` links, `#+BIBLIOGRAPHY`, cite links
…Read the whole file at its exact version.
How to install
mdr add jkitchin/knowhow/citation-verifier@sha256:baacc2264053001aThe line at the top of this page pins the label git:20260130.a88fc7e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_qnelcgfl65ifppfb)
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Versions
The registry has recorded 1 version of this file, committed on Jan 30, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8859 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
jkitchin/knowhow · 42 stars · license MIT · pushed 2026-11-02 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_qnelcgfl65ifppfb GET https://markdownregistry.com/api/v1/resolve?ref=jkitchin/knowhow/citation-verifier GET https://markdownregistry.com/api/v1/blob/baacc2264053001ae408c274202d8f0b8d26cf3c3f123665bb35037d5f5add02
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.
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