Pre-Publish Fact Checker

What this skill does

Verify external factual claims in draft content before publishing or sending. Produces a structured claim verification report with evidence links.

Pre-Publish Fact Checker is part of the Developer Tools category — developer tools that help your agent write, review, debug, and ship code. You can install it on its own or alongside other developer tools skills from the OpenClaw catalog.

How to install Pre-Publish Fact Checker

The easiest path is via the OpenClaw Easy desktop app — one click, no terminal required:

1. Download OpenClaw Easy for macOS or Windows (free, one-click installer, ~30 seconds).
2. Open the in-app Skills panel.
3. Search for claim-verifier and click Install.
4. The skill activates automatically when an incoming message matches its description.

Install from the command line

If you already run the OpenClaw CLI, add Pre-Publish Fact Checker with a single command:

openclaw skills add claim-verifier

This pulls claim-verifier from ClawHub and installs it into ~/.openclaw/skills/claim-verifier/. Restart the OpenClaw gateway afterwards so the new skill is discovered.

How to use Pre-Publish Fact Checker

Once installed, Pre-Publish Fact Checker activates on its own: when an incoming message on WhatsApp, Telegram, Slack, Discord, Feishu or Line matches the skill's description, your OpenClaw agent loads it and runs the workflow. You can also trigger it explicitly by describing the task in chat. No extra configuration is required after install.

Manual install (advanced)

If you prefer manual installation:

1. Click the Download .zip button above to grab claim-verifier-1.0.2.zip directly from our S3 mirror.
2. Unzip into ~/.openclaw/skills/claim-verifier/ (create the directory if it does not exist).
3. Restart OpenClaw Easy (or the OpenClaw CLI gateway) so the new skill is discovered.

Frequently asked questions

How do I install Pre-Publish Fact Checker?

Install Pre-Publish Fact Checker in the OpenClaw Easy desktop app by opening the Skills panel, searching for claim-verifier, and clicking Install. From a terminal you can run: openclaw skills add claim-verifier. Either way the skill is placed in ~/.openclaw/skills/claim-verifier/.

Is Pre-Publish Fact Checker free?

Yes. Pre-Publish Fact Checker is free and open-source, distributed under the Apache-2.0 license through ClawHub. No account or payment is required to download or run it.

What does Pre-Publish Fact Checker do?

Verify external factual claims in draft content before publishing or sending. Produces a structured claim verification report with evidence links.

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