fact-check

fact-check is a skill for Claude Code, Codex from build-with-dhiraj/ai-workflow-framework-portability-kit. It costs 30 tokens per session (13,052 once invoked), scanned A, original, MIT.

A structured method for checking claims, detecting misleading information, and comparing sources. It explains established checks such as SIFT, which means stopping, investigating, finding better coverage, and tracing claims to their origins.

In plain words
What is it for?
Use it to verify text, web pages, or images, compare sources in multiple languages, trace where claims began, and identify manipulation techniques.
Why use it?
It helps separate supported statements from unsupported or deceptive ones instead of relying on a single source. It also makes the reasoning and source comparison easier to teach and review.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions Claude Code.

Good fit Use it to verify text, web pages, or images, compare sources in multiple languages, trace where claims began, and identify manipulation techniques.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/build-with-dhiraj/ai-workflow-framework-portability-kit/fact-check
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add build-with-dhiraj/ai-workflow-framework-portability-kit --skill fact-check
Clone the repo
git clone --depth 1 https://github.com/build-with-dhiraj/ai-workflow-framework-portability-kit

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for fact-check

README.md
[![agentmods](https://agentmods.dev/badge/skills/build-with-dhiraj/ai-workflow-framework-portability-kit/fact-check/github.svg)](https://agentmods.dev/skills/build-with-dhiraj/ai-workflow-framework-portability-kit/fact-check)
Your own site
<a href="https://agentmods.dev/skills/build-with-dhiraj/ai-workflow-framework-portability-kit/fact-check"><img src="https://agentmods.dev/badge/skills/build-with-dhiraj/ai-workflow-framework-portability-kit/fact-check/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fact-check

Your own site · 80×15
<a href="https://agentmods.dev/skills/build-with-dhiraj/ai-workflow-framework-portability-kit/fact-check"><img src="https://agentmods.dev/badge/skills/build-with-dhiraj/ai-workflow-framework-portability-kit/fact-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 13,052 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00030 $0.13052
Opus 5.5 $0.00012 $0.05221
Sonnet 5.5 $0.00006 $0.02610
Haiku 4.5 $0.00003 $0.01305

Measured 9d ago against content hash b19eb227ae69, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-30, from the pricing page.

Security

Grade A, and why

fact-check scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Skills/fact-check/SKILL.md · 1,110 lines

How it starts

The opening of the file, as written. The whole thing — 1,110 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Fact-Check Skill v2.1

An advanced semi-automated fact-checking and disinformation detection system that produces visual Fact-Check Cards. Combines the SIFT methodology (Stop, Investigate, Find, Trace), the CRAAP test (Currency, Relevance, Authority, Accuracy, Purpose), prebunking/inoculation science, and claim decomposition with multi-language source triangulation, manipulation technique detection, origin tracing, counterfactual analysis, and a comprehensive educational component.

Grounded in research: fact-check labels reduce belief in false claims by ~18% (Clayton et al., 2020), accuracy prompts reduce sharing of false news by 15-20% (Pennycook & Rand, 2021), and prebunking videos improve manipulation recognition by ~5% even after a single viewing (van der Linden et al., 2022, Science Advances). This skill aims to maximize these effects through structured, transparent, and educational analysis.


Operating Modes

This skill operates in four modes depending on user intent:

Mode 1: Standard Fact-Check (default)

User provides content (text, URL, or image) and asks for verification. Runs the full 11-step pipeline. Produces a complete Fact-Check Card.

Mode 2: Comparison Mode

User provides two sources/texts/URLs on the same topic and asks for comparison. Runs decomposition on both, cross-references claims, identifies where they agree/disagree, evaluates which is more credible and why. Produces a Comparison Fact-Check Card.

Mode 3: Prebunking Briefing

User asks about current disinformation narratives on a topic (e.g., "What false narratives are circulating about vaccines/elections/energy?"). Searches for active disinformation campaigns on the topic, summarizes the most common false narratives, explains the manipulation techniques used, and provides preemptive defense tips. Produces a Prebunking Briefing Card.

Mode 4: Quick Check

User asks a simple yes/no verification question (e.g., "Is it true that X?"). Runs an abbreviated pipeline (Steps 1, 2, 6, 7 only). Skip Steps 3-5 and 8-9.

Read the full file on GitHub · 1,110 lines

Files

What ships with it

6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 9d ago First seen · 1,110 lines · 30 tokens per session scan A b19eb227ae69

Subscribe to this mod's changes

fact-check is a skill published in the GitHub repository build-with-dhiraj/ai-workflow-framework-portability-kit (4 stars, last pushed 9d ago), licensed MIT. It adds 30 tokens to every session and 13,052 once invoked, about $0.0001 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-21.