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@90921cc official
by githubgithub/awesome-copilot40k stars
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Three-layer verification pipeline for AI output. Extracts verifiable claims, finds supporting or contradicting sources via web search, runs adversarial review for hallucination patterns, and produces a structured verification report with source links for human review.

Use this Skill: https://skilld.dev/gh/github/awesome-copilot/doublecheck

This session only. Nothing lands on disk.

assetsverification-report-template.md

≈682 tokens on demand. Your agent reads this file only when SKILL.md points to it.

Verification Report

Summary

Text verified: [Brief description of what was checked] Claims extracted: [N total] Breakdown:

Rating Count
VERIFIED
PLAUSIBLE
UNVERIFIED
DISPUTED
FABRICATION RISK

Items requiring attention: [N items rated DISPUTED or FABRICATION RISK]


Flagged Items (Review These First)

Items rated DISPUTED or FABRICATION RISK. These need your attention before you rely on the source material.

[C#] -- [Brief description of the claim]

  • Claim: [The specific assertion from the target text]
  • Rating: [DISPUTED or FABRICATION RISK]
  • Finding: [What the verification found -- what's wrong or suspicious]
  • Source: [URL to contradicting or relevant source]
  • Recommendation: [What the user should do -- e.g., "Verify this citation in Westlaw" or "Remove this statistic unless you can find a primary source"]

All Claims

Full results for every extracted claim, grouped by confidence rating.

VERIFIED

[C#] -- [Brief description]
  • Claim: [The assertion]
  • Source: [URL]
  • Notes: [Any relevant context about the source]

PLAUSIBLE

[C#] -- [Brief description]
  • Claim: [The assertion]
  • Notes: [Why this is rated plausible rather than verified]

UNVERIFIED

[C#] -- [Brief description]
  • Claim: [The assertion]
  • Notes: [What was searched, why nothing was found]

DISPUTED

[C#] -- [Brief description]
  • Claim: [The assertion]
  • Contradicting source: [URL]
  • Details: [What the source says vs. what the claim says]

FABRICATION RISK

[C#] -- [Brief description]
  • Claim: [The assertion]
  • Pattern: [Which hallucination pattern this matches]
  • Details: [Why this is flagged -- e.g., "citation not found in any legal database"]

Internal Consistency

[Any contradictions found within the target text itself, or "No internal contradictions detected."]


What Was Not Checked

[List any claims that could not be evaluated -- paywalled sources, claims requiring specialized databases, unfalsifiable assertions, etc.]


Limitations

  • This tool accelerates human verification; it does not replace it.
  • Web search results may not include the most recent information or paywalled sources.
  • The adversarial review uses the same underlying model that may have produced the original output. It catches many issues but cannot catch all of them.
  • A claim rated VERIFIED means a supporting source was found, not that the claim is definitely correct. Sources can be wrong too.
  • Claims rated PLAUSIBLE may still be wrong. The absence of contradicting evidence is not proof of accuracy.

Source: SKILL.md on GitHub

1 warning16d5 checks · Risk SAFE
  • Gen Agent Trust Hub16d

    The skill provides a structured fact-checking and hallucination detection pipeline using web searches to evaluate factual claims. It is functional and safe, with a standard indirect prompt injection surface common to text-processing skills.

  • Socket16d

    No alerts

  • Snyk16d

    Risk: MEDIUM · 1 issue

  • Runlayer6mo

    1/2 files flagged

  • ZeroLeaks5mo

    Score: 93/100 · 2 sections analyzed

Signed by skilld at 90921cc. This ties the file your Agent reads to that commit on GitHub. It does not review the instructions.

Last checked against GitHub 19 hours ago.

Activeupdated 5 months ago
  • fact-checking
  • verification
  • web-search
  • hallucination
  • claims
  • sources
  • ai-output
  • adversarial-review

README badge

README badge for github/awesome-copilot/doublecheck

Extracts verifiable claims from AI-generated text, searches the web for supporting or contradicting sources, and runs adversarial review to detect hallucinations. Produces a structured verification report with source links and confidence ratings for human review, with both persistent and one-shot modes.

Generated from the current SKILL.md.

Does this skill verify claims in real-time as I write, or only on request?
It supports both. Active mode runs persistent verification on all substantive responses with inline summaries. One-shot mode verifies specific text you provide. You can toggle active mode on or off anytime.
What does 'verification' actually mean here — will this tell me if something is true or false?
No. The skill extracts verifiable claims, searches for supporting or contradicting sources you can check independently, and flags hallucination patterns. It surfaces evidence for human review, not verdicts.
How does this handle high-stakes content like legal or regulatory guidance?
It automatically escalates to a full three-layer verification report (self-audit, source verification, adversarial review) for legal analysis, regulatory interpretation, and compliance guidance. Inline verification is not used for these content types.
What happens if the skill finds a claim it can't source or thinks might be a hallucination?
It flags the claim prominently before the verification section so you see it immediately, then provides the full detailed report. You don't have to ask for extra details when something looks wrong.
Does this skill need web search enabled to work?
Yes. Layer 2 (source verification) requires web search to find external evidence and URLs supporting or contradicting claims. Without it, the skill cannot complete its pipeline.

Generated from the current SKILL.md. These answers refresh after source changes.