What is a fact-checking API?

A fact-checking API takes a claim and checks it against a body of sources, returning a verdict rather than a list of links. The APITube fact-check endpoint checks a claim against a live index of 500,000+ news and web sources and returns a judged result with the evidence behind it.

How does the APITube fact-check endpoint work?

The APITube fact-check endpoint runs retrieval-augmented generation: it retrieves the coverage most relevant to your claim from the index, then returns a verdict together with the articles that support or contradict it. Sources carry an Open PageRank authority score, so you can weigh them.

What does the fact-check API return?

It returns a verdict on the claim plus the supporting and contradicting sources it was based on, each with its domain and authority. Your LLM or agent can cite those sources directly instead of asserting an unbacked answer.

Can I use fact-checking to ground an LLM or RAG agent?

Yes. Call the APITube fact-check endpoint before your model answers a factual question, then have the model cite the returned sources. This grounds the answer in current, attributable evidence instead of the training cutoff.

How is fact-checking different from a keyword news search?

A keyword search returns matching articles and leaves the judgement to you. The APITube fact-check endpoint goes a step further: it evaluates the claim against retrieved coverage and returns a verdict with the evidence, which is what an agent needs to act on.

How many languages and countries does fact-checking cover?

Fact-checking draws on the same index as the APITube news API: 500,000+ sources across 59 languages and 177+ countries, with a historical archive you can query by date range.

Is the fact-check endpoint available on the free plan?

Fact-checking runs retrieval-augmented generation over the index, so each check has a small credit cost and is available on paid plans. The standard news search and the full enriched schema remain available on the free plan.

Trusted by 6,000+ developers

Fact-Checking API for AI

Last updated: July 22, 2026

Stop AI from asserting things it cannot back up. The APITube fact-check endpoint checks a claim against a live index of global sources and returns a verdict with the coverage behind it — so your model cites evidence instead of guessing.

Realtime news articles from 177 countries

in 60 languages

Benefits

Ground answers in evidence, not guesses

A fact-checking API checks a claim against a live index of sources and returns a judged verdict with evidence. The APITube fact-check endpoint runs retrieval-augmented generation over 500,000+ news and web sources and returns a verdict with the articles that support or contradict the claim, so an LLM or agent can ground and cite its answer.

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Learn more about API

Verifies claims against 500,000+ live sources

Retrieval-augmented generation over the index

Returns a verdict with supporting and contradicting sources

Sources ranked by Open PageRank authority 0-10

Grounds LLM and RAG agent answers with evidence

One API key across REST, streaming, and MCP

59 languages, 177+ countries

Use cases

Discover the possibilities

Our solutions are designed to help you achieve your goals. Whether you are a small business or a large corporation, we have the right solution for you.

Grounded AI assistants

Check a claim before your assistant answers, then cite the returned sources instead of hallucinating.

Newsroom

Editorial verification

Verify a quote or statistic against current coverage and see the authoritative sources behind it.

Trust & safety

Misinformation monitoring

Score circulating claims against the index to flag ones that current reporting contradicts.

Research

Due diligence checks

Confirm claims about a company, person, or event against sourced, ranked coverage.

Features

Don’t waste time on complex features

Complex features made simple. Our API provides a simple way to access news articles from around the world. We provide a simple, consistent, and easy-to-use API to access news articles from thousands of sources.

News API

Export data in many formats
Industry Monitoring
Brand Monitoring
Market Intelligence
Risk Management
Competitive Intelligence
Media Monitoring
Sentiment Analysis
Trend Analysis
Story Grouping
Forecasting social trends
Multi-language Support
Audience Engagement
Geographical Analysis
Real-time Breaking News
Historical Data Access
Custom News Feeds
News Aggregation
Content Filtering
Over 50 integrations

Extract Additional Data

Industries
Locations
Persons
Organizations
Brands
Events
Disasters
Diseases
Links
Media
Images & Videos
Hashtags
Authors
Source
Duplicate Detection
Publisher Rank
Article Sentiment
Readability Score
Language Detection
and more

Analysis

Sentiment Analysis
Analysis of public opinion
Categorization
Financial Analysis
Trend Analysis
Story Grouping
Content Summarization
Entity Recognition
Keyword Extraction
Topic Modeling
Event Detection
Named Entity Recognition
Text Classification
Controversy Detection
Trust Score Analysis
Engagement Metrics
Source Bias Detection
Quality Ranking
Spam Detection
Emotion Detection

Advanced Searching

Search by Location
Search by Date Range
Search by Source
Search by Category
Search by Industry
Search by Sentiment
Search by Story
Search by Publisher Rank
Search by Language
Search by Entity
Search by Keywords
Boolean Search
Proximity Search
Faceted Search
Range Queries
Search by Author
Search by Media Type
Search by Breaking News
Search by Read Time
+ over 65 more filters

More than 500,000+ sources

APITube is trusted by teams around the world to help them build and deliver amazing digital experiences faster than ever before.

Last updated: 3s ago
Total sources: 512.645k
Requests yesterday: 25.768
Articles added yesterday: 137.054k
Total articles: 3.84b

Frequently asked questions

: A fact-checking API takes a claim and checks it against a body of sources, returning a verdict rather than a list of links. The APITube fact-check endpoint checks a claim against a live index of 500,000+ news and web sources and returns a judged result with the evidence behind it.
: The APITube fact-check endpoint runs retrieval-augmented generation: it retrieves the coverage most relevant to your claim from the index, then returns a verdict together with the articles that support or contradict it. Sources carry an Open PageRank authority score, so you can weigh them.
: It returns a verdict on the claim plus the supporting and contradicting sources it was based on, each with its domain and authority. Your LLM or agent can cite those sources directly instead of asserting an unbacked answer.
: Yes. Call the APITube fact-check endpoint before your model answers a factual question, then have the model cite the returned sources. This grounds the answer in current, attributable evidence instead of the training cutoff.
: A keyword search returns matching articles and leaves the judgement to you. The APITube fact-check endpoint goes a step further: it evaluates the claim against retrieved coverage and returns a verdict with the evidence, which is what an agent needs to act on.
: Fact-checking draws on the same index as the APITube news API: 500,000+ sources across 59 languages and 177+ countries, with a historical archive you can query by date range.
: Fact-checking runs retrieval-augmented generation over the index, so each check has a small credit cost and is available on paid plans. The standard news search and the full enriched schema remain available on the free plan.