Fact Checking Plugin

NOTE: modeled on https://github.com/moneya/plugin-zipcode-finder

Introduction

This plugin checks a given statement with Google Fact Check Tools.

API Information

• https://developers.google.com/fact-check/tools/api
• https://developers.google.com/search/docs/appearance/structured-data/factcheck

How it works

• Retrieves a statement from the input.
• Queries the fact-check API for existing claims about the given statement.
• Chooses the best matching review
• Outputs the matching claim, review title, rating, and source as a JSON string.

Usage

1. Ensure the plugin is correctly integrated into the hosting environment.
2. Call the run function with a statement to check and a Google API key
3. Receive fact-check summary as output.

> extism call plugin.wasm run --input '{"statement":"Tomatoes are fruit","key":"*********"}' --wasi --allow-host 'factchecktools.googleapis.com'

Response to the above may be (formatted for easier reading)

{
   "allRatings" : [
      "Mixture"
   ],
   "claim" : "Tomatoes are officially considered fruits in the U.S.",
   "overallRating" : "Mixture",
   "rating" : "Mixture",
   "source" : "https://www.snopes.com/fact-check/tomatoes-fruits-vegetables/",
   "title" : "Are Tomatoes Fruits or Vegetables?"
}