agent-instructions
Use when writing project instructions for a coding agent (CLAUDE.md, AGENTS.md, or equivalent). Covers what belongs in them, what does not, structure, and…
Use when verifying claims. Covers tracing a claim to its origin, evaluating sources, detecting laundered statistics, and reporting a verdict with the evidence rather than an assertion.
$ npx -y skills add nimadorostkar/Claude-Skills-collection --skill fact-checking --agent claude-codeHow it fires
How this skill gets triggered: by you, by Claude, or both.
/fact-checkingContext preview
The summary Claude sees to decide when to auto-load this skill.
Use when verifying claims. Covers tracing a claim to its origin, evaluating sources, detecting laundered statistics, and reporting a verdict with the evidence rather than an assertion.
name: fact-checking description: Use when verifying claims. Covers tracing a claim to its origin, evaluating sources, detecting laundered statistics, and reporting a verdict with the evidence rather than an assertion. metadata: category: productivity version: 1.0.0 tags: [fact-checking, verification, sources, claims, evidence]
Verify a claim by tracing it to its origin. Most false claims in circulation are not fabrications; they are real findings that have been stripped of their qualifications, or numbers that have acquired a citation through repetition.
1. **Quote the claim exactly** — Vague paraphrases are unfalsifiable. "Most projects fail" cannot be checked; "70% of software projects fail" can. 2. **Follow the citation chain** — Each source cites another. Follow it until you reach a primary source, or until it loops, or until it disappears. All three outcomes are informative. 3. **Read what the original actually says** — Very frequently, the original is a limited finding about a specific population that has been generalized into a universal claim by the time it reaches you. 4. **Check for independence** — Twelve sources citing one study is one study. 5. **Check the qualifications that were dropped** — "In a survey of 43 startups in one accelerator cohort" becomes "70% of startups" within three citations. 6. **Report the chain, not just the verdict** — The chain is the evidence.
**Tracing a claim to its origin:**
## Claim
"70% of digital transformation projects fail."
## Chain
Appears in: a 2025 consultancy report.
Cited to -> a 2023 industry magazine article.
Cited to -> a 2019 blog post by a management consultancy.
Cited to -> a 2016 book.
Cited to -> a 2013 article in a business publication.
Cited to -> "research suggests" — no citation. The chain ends.
There is no study. The number entered circulation without a source and acquired
authority through repetition. Each citation cited the previous citation, and by
the fifth hop it was being reported as an established statistic.
## What the closest thing to evidence actually says
A separate 2011 survey — sometimes cited in the same context — found that
of 1,471 IT projects, the average cost overrun was 27%, and one in six projects
had a cost overrun exceeding 200%. That is a real finding, and it does not say
70% of anything failed. It is about cost overrun, not failure, and "failure" is
never defined in any of the sources in the chain above.
## Verdict: UNSUPPORTED
The number has no traceable origin. It should not be used. If a figure is
needed, cite the 2011 study for what it actually measured — cost overrun — and
state the definition.
Note also: "digital transformation" is not defined in any source in the chain,
which makes the claim unfalsifiable even in principle.**Detecting a dropped qualification:**
## Claim as it appeared "Remote workers are 13% more productive." ## What the original study found A 2015 randomized trial at a single Chinese travel agency, on call-center staff performing a highly measurable, repetitive task, over nine months. The 13% figure breaks down as: ~9% from working more minutes per shift (fewer breaks, fewer sick days) and ~4% from more calls per minute. The same study found that half the participants asked to return to the office, and that promotion rates for remote workers fell. ## Verdict: MISLEADING The finding is real. The claim, as stated, is not what the study found. It generalizes a result about call-center piecework at one company to knowledge work generally, and it omits both the mechanism (more hours, not more output per hour) and the negative findings from the same study.
A curated library of 137 production-grade skills for Claude and other AI coding agents. Every skill follows one structure, speaks with one voice, and earns its place by changing what the agent does.
Repo: nimadorostkar/Claude-Skills-collection
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