Last updated: 27 May 2026
SlopSleuth is a browser extension that analyses web articles for trust signals. When you visit a web page, the extension may send the page text to our servers for analysis. The analysis checks whether quoted experts exist, whether cited studies are real, and whether claims match their supposed sources.
Page content: When SlopSleuth scans a page, the text content of that page is sent to our analysis servers. This is necessary to perform the trust analysis. We do not store the full text of pages you visit. The text is processed and discarded after analysis.
Page URL and domain: The URL and domain of scanned pages are recorded to build domain-level trust profiles. This helps SlopSleuth provide faster, more accurate results over time.
Scan results: The analysis results (trust score, detected signals, evidence findings) are stored to improve domain-level accuracy and to train our detection models. Scan results do not contain personally identifiable information.
Usage data: We track aggregate usage metrics such as the number of scans performed. We do not track which specific pages you visit beyond the scanning functionality.
Scan rate limiting: SlopSleuth limits free users to 50 scans per day. To enforce this limit fairly per installation rather than per device or per IP, each scan request carries a pseudonymous installation identifier — a random string generated on your device when the extension is installed. The identifier is not linked to your name, email, account, or any personally identifiable information. The identifier is stored locally in your browser and on our infrastructure for rate-counting purposes. No account creation is required.
Page text is sent to the Anthropic API (Claude) for analysis. Anthropic's API processes the text and returns trust signals. Anthropic's API usage is subject to Anthropic's privacy policy.
Analysis results are stored on Cloudflare infrastructure (Workers, D1 database, KV store). Cloudflare's data processing is subject to Cloudflare's privacy policy.
To check claims in the articles you scan, SlopSleuth also cross-references short fragments of the article text against a small set of public third-party sources. This is how we verify whether quoted experts exist, cited studies are real, and named events appear in independent coverage.
What is sent: Entity names (people, organisations, places, works), short quote fragments, and citation identifiers such as DOIs — all extracted from the article text you are already scanning. We do not send the full article text, the URL of the page you are viewing, or any identifier associated with you or your device.
Categories of third parties we query, and why:
The specific third-party services used within each category are maintained internally and provided on request to data-subject inquiries (privacy@slopsleuth.com) or to institutional users under licence.
Caching: Lookup results are cached on our infrastructure. Cache entries are not associated with any user or device.
Each third party receives anonymous HTTP requests and handles them under its own privacy policy.
SlopSleuth includes an optional "Was this right?" link in the scan panel. If you choose to use it, your response is sent to our servers so we can calibrate the detector over time. Nothing is sent unless you actively submit feedback.
What is sent when you submit feedback:
We do not send the article URL, the article content, or any identifier that could be used to contact you. Feedback responses are stored on Cloudflare infrastructure and retained as training signal for improving detection accuracy. You can stop all feedback collection at any time by uninstalling the extension.
You can uninstall the SlopSleuth extension at any time, which will immediately stop all data collection. If you wish to request deletion of any data associated with your usage, contact us at privacy@slopsleuth.com.
Data leaves our infrastructure to the following named processors, each governed by its own privacy policy:
In addition, short article-extracted fragments (entity names, quote fragments, citation identifiers — never the full article text or any device identifier) are sent to public knowledge databases, scholarly and statistical data sources, retraction registries, fact-check aggregators, and news archives for verification purposes, as described in the Knowledge-layer verification section above. The current roster of specific services within those categories is available on request.
We may update this privacy policy from time to time. Changes will be posted on this page with an updated date. Continued use of the extension after changes constitutes acceptance of the updated policy.
For privacy-related questions, contact: privacy@slopsleuth.com