# blog-factcheck

> Verify statistics and claims in blog posts by fetching cited source URLs and checking if the claimed data actually appe…

Verify statistics and claims in blog posts by fetching cited source URLs and checking if the claimed data actually appears on the page. Extracts all load-bearing claims (statistics, product or policy claims, ranking and comparative claims, named sources), validates cited URLs before fetching, and scores match confidence (exact match 1.0, paraphrase 0.7-0.9, not found 0.0). Flags uncited claims as UNVERIFIED and marks a claim verified only when this run fetched the source and found the passage. Checks that a source says what the post says it says; it cannot prove the source is true or verify first-hand experience. Use when the user says "fact check", "verify statistics", "check sources", "factcheck". Report only; not for rewriting posts (blog-rewrite).

- Type: Skill
- Made by: AgriciDaniel
- Category: Research
- Formats: Skills
- Version: a059d99
- Source: https://github.com/agricidaniel/claude-blog/tree/HEAD/skills/blog-factcheck
- Page: https://pluginboard.ai/skills/blog-factcheck-agricidaniel

## Works with

- ChatGPT
- Claude
- Gemini
- GitHub Copilot
- Cursor
- Claude Code
- Codex
- Antigravity
- Gemini CLI
- Replit
- OpenClaw
- OpenCode
- Hermes Agent

## Install

### ChatGPT

In ChatGPT: Download the blog-factcheck folder and zip it, then Plugins → Skills → Create → Upload from your computer. Business and Enterprise plans.

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

### Claude

In Claude (web or desktop): Download the blog-factcheck folder and zip the folder itself, then upload it in Customize → Skills.

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

### Gemini

In Gemini: Download the blog-factcheck folder, then at gemini.google.com click Customize → Skills → Create → Upload and pick the folder (or a .zip of it).

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

### GitHub Copilot

Run in your terminal:

```shell
npx -y degit AgriciDaniel/claude-blog/skills/blog-factcheck ~/.copilot/skills/blog-factcheck
```

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

### Cursor

Run in your terminal:

```shell
npx -y degit AgriciDaniel/claude-blog/skills/blog-factcheck ~/.cursor/skills/blog-factcheck
```

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

### Claude Code

Run in your terminal:

```shell
npx -y degit AgriciDaniel/claude-blog/skills/blog-factcheck ~/.claude/skills/blog-factcheck
```

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

Or all of Claude Blog, in Claude Code:

```text
/plugin marketplace add AgriciDaniel/claude-blog
/plugin install claude-blog@agricidaniel-blog
```

### Codex

Run in your terminal:

```shell
npx -y degit AgriciDaniel/claude-blog/skills/blog-factcheck ~/.agents/skills/blog-factcheck
```

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

### Antigravity

In Antigravity: Copy the blog-factcheck folder into ~/.gemini/config/skills (Antigravity app and IDE) or ~/.gemini/antigravity-cli/skills (Antigravity CLI).

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

### Gemini CLI

Run in your terminal:

```shell
npx -y degit AgriciDaniel/claude-blog/skills/blog-factcheck ~/.gemini/skills/blog-factcheck
```

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

### Replit

Run in your terminal:

```shell
npx -y degit AgriciDaniel/claude-blog/skills/blog-factcheck .agents/skills/blog-factcheck
```

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

### OpenClaw

Run in your terminal:

```shell
npx -y degit AgriciDaniel/claude-blog/skills/blog-factcheck ~/.openclaw/skills/blog-factcheck
```

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

### OpenCode

Run in your terminal:

```shell
npx -y degit AgriciDaniel/claude-blog/skills/blog-factcheck ~/.config/opencode/skills/blog-factcheck
```

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

### Hermes Agent

Run in your terminal:

```shell
npx -y degit AgriciDaniel/claude-blog/skills/blog-factcheck ~/.hermes/skills/blog-factcheck
```

View the folder on GitHub: https://github.com/AgriciDaniel/claude-blog/tree/HEAD/skills/blog-factcheck

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From Pluginboard (https://pluginboard.ai).