fact-check

fact-check is a plugin for Claude Code from Apfelbaums/Apfelbaums-plugins. Its manifest loads nothing; the 1 command it bundles cost 47 tokens per session together, scanned A, original, no licence file.

A multi-agent tool for checking claims in legal and financial documents against web sources. It also cross-checks the results and produces revised documents with citations.

In plain words
What is it for?
It is for extracting claims, verifying them, cross-checking evidence, and adding source citations to legal or financial documents.
Why use it?
It helps identify unsupported or incorrect claims and reduces the need to verify every statement manually.

Plugin for Claude Code

Written for Claude Code: a Claude Code plugin manifest.

Good fit It is for extracting claims, verifying them, cross-checking evidence, and adding source citations to legal or financial documents.

Compare 6 plugins from other repositories ↓
Install in Claude Code
/plugin marketplace add Apfelbaums/Apfelbaums-plugins
/plugin install 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.

Clone the repo
git clone --depth 1 https://github.com/Apfelbaums/Apfelbaums-plugins

Made for: Claude Code.

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/plugins/apfelbaums/apfelbaums-plugins/fact-check/github.svg)](https://agentmods.dev/plugins/apfelbaums/apfelbaums-plugins/fact-check)
Your own site
<a href="https://agentmods.dev/plugins/apfelbaums/apfelbaums-plugins/fact-check"><img src="https://agentmods.dev/badge/plugins/apfelbaums/apfelbaums-plugins/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/plugins/apfelbaums/apfelbaums-plugins/fact-check"><img src="https://agentmods.dev/badge/plugins/apfelbaums/apfelbaums-plugins/fact-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured The manifest loads nothing itself; its 1 command cost 47 tokens a session between them.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
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 2mo 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.

plugins/fact-check/.claude-plugin/plugin.json · 13 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Contents

What it installs

The manifest is a name and a version. 1 command travel with it, and installing the plugin installs all of them — 47 tokens a session between them. Each is measured on its own page, and each can be installed alone.

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. 2mo ago First seen · 13 lines scan A 85edd6250d82

Subscribe to this mod's changes

fact-check is a plugin published in the GitHub repository Apfelbaums/Apfelbaums-plugins (2 stars, last pushed 7mo ago), with no licence file. Its token cost is not measured: this kind of file is read by the harness, not the model. 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 2026-08-31.

Related

fact-check compared with plugins from other repositories

fact-check next to 6 plugins from other repositories
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fact-checkApfelbaums/Apfelbaums-pluginsPlugin27mo agononeA—Claude Code
agb-recht-prueferKlotzkette/claude-fuer-deutsches-rechtPlugin1.8kyesterdayApache-2.0A—Claude Code
section-508Sushegaad/Claude-Skills-Governance-Risk-and-CompliancePlugin1.0k28d agoMITA—Claude Code
vclo-by-rohasrohasnagpal/legal-ai-skillsPlugin20127d agoMITA—Claude Code
shinkokukazukinagata/shinkokuPlugin3671mo agoMITA—Claude Code
fedramp-sspGRCEngClub/claude-grc-engineeringPlugin4305d agononeA—Claude Code
deeplaw-knowledge-osEysn0130/DeepLawPlugin61mo agoApache-2.0A—Claude Code