Claude Skill for fact-checking

Claude Skill for fact-checking

Team Pick
Content & Creative
TripleDart
22 nodes across four models, processing a 2,000-word article in under 3 minutes, against 45 to 60 minutes for the same job by hand.
Source
TripleDart
Tools
Claude, Sonar Pro web search
Runs
Per article
Cost
Free guide, API costs
Last updated
August 7, 2026

What it is.

Stage one extracts the checkable claims from a draft. Stage two verifies each one with a web search model. Stage three writes a synthesis report marking what verified, what failed, and what could not be sourced at all.

It runs 22 nodes across four AI models, and a 2,000-word article completes in under 3 minutes. The same article checked properly by hand is documented at 45 to 60 minutes.

TripleDart's own guide, and it names our own platform. The three stages work in any tool.

What you get.

  • A claim extraction stage that lists every statistic and attributed statement in the draft.
  • A verification pass per claim, with a source attached or an unverifiable verdict.
  • A synthesis report written so every correction can be made in one pass.
  • Source priority lists by vertical, so fintech and cybersecurity claims get checked against different authorities.
  • A three-call starting version, for building it yourself before committing to 22 nodes.
HOW TO USE IT

How to set it up.

1

Start with the three-call version and check that claim extraction finds everything before you build further.

2

Write your source priority list per vertical, since what counts as authoritative differs by field.

3

Run stage one alone on a finished draft and read the extracted claims, because a missed claim never gets checked.

4

Point verification at a web search model, so it reads live pages instead of recalling them.

5

Treat an unverifiable verdict as a decision point: rewrite the sentence or cut the number.

6

Put the pipeline before publishing, since a correction after the fact costs more.

Use cases

List every claim in a draft

Run the extraction stage so each statistic and quote is on the table.

Verify one claim at a time

Let the verification pass check each one against its own source.

Check a long article quickly

Run a full draft through the stages before the editor reads it.

Best for

Content with statistics in it

Every borrowed number is a small liability, and nobody remembers where half of them came from.

AI-assisted drafts

A model that writes a plausible statistic is the exact reason this stage has to exist.

Auditing an archive

Old posts carry old numbers, and a batch run tells you which ones now read as wrong.

Open the original.

Hosted on TripleDart, free to open.
Open the Tool

Questions about Claude Skill for fact-checking

Does it replace a human reviewer?
What does a run cost?
What does it miss?

Questions about Content & Creative

What counts as an authoritative source?
Which claims in a draft need checking?
Strengths
  • It separates extraction from verification, so a missed claim and a wrong claim are different failures you can see.
  • The unverifiable verdict is a first-class outcome, which is more honest than a pass or fail.
  • There is a three-call version documented for building it yourself.
Limitations
  • TripleDart's own guide, and it names our own platform as the execution layer.
  • Automated checking is not a human reviewer, and the guide says so in its own FAQ.
  • Four models per run means four sets of API costs on every article.
  • Verification quality depends on what is indexed, so a claim from a PDF or a paywalled report often comes back unverifiable.
Skip this if
  • Skip it if you already have an editor checking claims before anything publishes.
Ideal for
  • Editors
  • Content leads
  • Stage: Series A onward

Want this running without building it yourself?

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