Verify citations and references in a document, report, or article against real sources. Use when the user asks to fact-check, verify references, check citations, or validate evidence in research reports, tender responses, whitepapers, or academic writing.
Start a fresh conversation. Replace the highlighted placeholders.
Use verify-citations to verify citations, arithmetic, and unsupported claims in [document]; I approve transmission of a redacted copy to the hosted verifier. Return verification coverage, per-citation issues, and remediation suggestions—not a truth or publication verdict.
Required inputs
[document]
User-approved starter prompt based on a pinned source version; check current skill requirements before running. Task evidence ↗
SKILL.md
name: verify-citationsdescription: Verify citations and references in a document, report, or article against real sources. Use when the user asks to fact-check, verify references, check citations, or validate evidence in research reports, tender responses, whitepapers, or academic writing.category: document-verificationrisk: criticalsource: communitysource_repo: Sketchjar/stipple-agent-skillssource_type: communitydate_added: "2026-08-31"author: Sketchjartags: [document-verification, fact-checking, stipple, authenticity]tools: [claude, cursor, gemini, codex]license: "Apache-2.0"license_source: "https://github.com/Sketchjar/stipple-agent-skills/blob/main/LICENSE"
Citation Verification
Verify that citations in a document actually resolve and support the claims they're attached to. Uses the Stipple API (free anonymous tier, no signup) for citation resolution, arithmetic recomputation, and unsupported-claim detection.
When to use
Before submitting or publishing a research report, tender response, or whitepaper
Reviewing an LLM-generated document (LLM citations are plausibly-formatted and frequently wrong)
Due diligence on third-party reports
Academic reference checking
Instructions
Get the document. Ask the user for a URL to the report, or a local file path (PDF, DOCX, Markdown). If the user pastes text directly, skip to step 3 with text input.
Run verification. POST the document to Stipple's citation verification endpoint:
The anonymous free tier works without the Authorization header. Deep mode (?deep=true) costs more credits but cross-checks citations against live web sources.
Interpret the response. The result includes:
verification_coverage — percentage of claims verified (e.g. "78%")
citations[] — per-citation status: resolved and matching, resolved but mismatched, or unresolvable, with the issue explained
unsupported_claims[] — claims with no citation at all
Report honestly. Present results as verification coverage, not a truth verdict:
"21/27 citations resolve and match"
"[x] FY24+FY25 revenue stated $4.2m, actual $3.7m"
"[!] 'industry-leading accuracy' — no source in document"
Unverified ≠ false. The goal is telling the user which claims are backed and which aren't.
Offer remediation. For failed citations, suggest: fixing the decimal shift, finding the correct source, or removing the unsupported claim.
Output format
Verification coverage: 78%
Citations: 21/27 resolve and match
[+] "ABS unemployment 4.1% April 2026" — matches abs.gov.au
[-] "AI adoption grew 340% in 2025" — source states 34%, decimal shifted
Arithmetic: 12/13 recompute correctly
[x] FY24 + FY25 revenue — stated $4.2m, actual $3.7m
Unsupported claims: 2
[!] "industry-leading accuracy" — no source in document
Limitations and Safety
Uploading a report or manuscript sends its contents to a hosted third party; deep
mode also retrieves external sources. Obtain approval before transmission, remove
confidential or personal material, and verify current retention and deletion terms.
Resolution and textual support do not establish that a source is authoritative or
that a claim is true. Inspect consequential citations in the primary source and
preserve page, edition, date, and access context.
Treat unresolved or unsupported claims as review items, not proof of fabrication,
and keep a human reviewer responsible for publication or academic decisions.
Notes
Works on PDF, DOCX, MD, TXT. For pasted text, POST JSON: {"text": "..."}
Deep verification (deep=true) is slower and costs more credits but resolves citations against live sources
Pairs well with verify-document (is the source doc itself authentic?) run first
Anonymous free tier: shared weekly allowance. Get a free key at https://www.stipple.sh for your own metering