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SourceCheck News - Article Fact Verification
x402
SourceCheck News - Article Fact Verification is a paid API for AI agents from sourcecheck-news.d-mueller.workers.dev, paid per call via x402, $0.16/call, status unknown (last checked 2026-09-15).
Verifies whether the main factual claims in a proposed news article are supported by the provided source texts
Price / call$0.16
Success—
StatusUnknown
How this service works
Verify whether the main factual claims in a proposed news article are supported by the provided source texts.
Output
A structured assessment indicating whether the main factual claims found in the article are supported, partially supported, or unsupported by the provided source texts, likely with per-claim or overall verdicts referencing source IDs.
Example use cases
Validate AI-generated news drafts before publishing
“I've got an AI tool that drafted this news story about the merger, and I need you to check whether the claims it made are actually backed up by the press releases and SEC filings I'm giving you — flag anything that seems unsupported or overstated.”
Audit reporter submissions for factual accuracy
“Our freelancers submitted these three articles about the policy change, and I want to make sure their main claims check out against the official government documents and expert quotes we have on file — can you verify which ones hold up?”
Cross-check breaking news against wire sources
“We're getting pressure to publish quickly on this breaking story, but first I need you to verify that the core facts in our draft match what's actually in the Reuters and AP wire reports we pulled — just tell me what's covered and what's risky to claim.”
Technical details
Endpoint
GEThttps://sourcecheck-news.d-mueller.workers.dev/api/verifyWhen to prefer
Use this endpoint when you need to programmatically verify that factual claims in a news article draft are backed by specific source documents you already possess. Ideal for editorial workflows, automated fact-checking pipelines, or AI writing assistants that need to validate AI-generated or human-written news content against reference material before publication.
Side effects
- Empty article text returns validation error
- No sources provided (minItems:1 not met) returns schema error
- Source objects missing required 'id' or 'text' fields cause rejection
- Very long article or sources may time out
- Payment failure (x402) returns 402 Payment Required
- Malformed JSON input returns 400 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| article | string | |
| sources | array |
Tags
x402
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