⭐ Facts Check API

Facts-Checking Webz.io’s on-demand fact checking uses AI to automatically identify factual claims in online text, such as news articles, blog posts, or forum posts. Each claim is then cross-verified by searching the web for other sources that support or refute it. The output clearly indicates whether the claim is Verified, False, or Unverified (when no references are found).

Want to see it in action? Try it out in our Demo or Playground environments.

Endpoint

This is the dedicated endpoint for the Fact-Check feature: https://api.webz.io/fact-check

API Calls

It can be used with HTTP GET and POST requests.

The table below outlines the required fields for each call, depending on the HTTP request type:

Expected structure:

https://api.webz.io/fact-check?token=[USER_TOKEN]&uuid=[POST_UUID]

https://api.webz.io/fact-check?token=[USER_TOKEN]&post_text=[POST_TITLE+POST_TEXT]&post_link=[POST_LINK]&date=[POST_PUBLISHED_DATE]

Limitations:

Fact-checking requires an input length of no less than 100 and no more than 10,000 characters.

Output Reference

The following table shows the fields returned by the API:

Response example:

{
  "bias": "left",
  "claims": [
    {
      "claim": "Iran's Supreme Leader Ayatollah Ali Khamenei has l...",
      "verified": "true",
      "references": [
        {
          "text": "Iran leader Khamenei sees his inner circle hollowed out ...",
          "link": "https://www.reuters.com/world/middle-east/i..."
        }
      ]
    },
    {
      "claim": "The loss of these advisers has created significant..",
      "verified": "true",
      "references": [
        {
          "text": "Iran leader Khamenei sees his inner circle hollowed ou...",
          "link": "https://www.cnn.com/world/middle-east/iran-lead..."
        }
      ]
    }
  ]
}

Error Handling

The table below lists the possible error codes our API response might return for improper request:

API Credits

Fact-Check is offered as a premium feature. While a regular NBDR request counts as 1 API call, every Fact-Check request counts as 5 API calls toward the user’s total usage.