Klosr — Privacy Policy

Last updated: 17 April 2026

Klosr is a Chrome extension that helps founders and sales professionals research LinkedIn prospects and draft outreach emails. This policy explains what data Klosr accesses, how it is used, and what leaves your device.

What Klosr Reads

When you visit a LinkedIn profile page (URLs starting with https://www.linkedin.com/in/) and open Klosr, the extension reads the public profile data rendered on that page:

• Name, headline, location, about section
• Current and past companies, roles, and dates (Experience section)
• Recent posts on the profile
• Profile photo URL and LinkedIn URL
• Publicly visible email addresses (when present in the profile DOM)

Klosr only reads profiles you actively open. It does not crawl LinkedIn, run in the background, or access your feed, messages, or connections.

What Klosr Sends to Our Servers

The data above is sent to Klosr's backend (api-endpoint-seven.vercel.app) only when you trigger an action (generate a brief, draft an email, run a quick prompt). The backend forwards it to third-party AI and data providers to produce the output:

• Anthropic (Claude) — generates the research brief, email drafts, and chat replies. Anthropic privacy policy
• LeadMagic — finds verified work emails by LinkedIn URL. Only called when you click Email and no email was visible on the profile. LeadMagic privacy policy
• NinjaPear — fetches company-level data (funding, recent updates) when a prospect's company is identifiable. NinjaPear privacy policy

Klosr does not maintain a database of scraped profiles. Briefs and emails are generated in-flight and returned to your extension.

What Klosr Stores Locally on Your Device

Klosr uses Chrome's local storage (chrome.storage.local) on your device to persist:

• Your "My Context" settings (your name, company, what you sell, ICP, value proposition, proof points, background, tone)
• Sender information used for email sign-offs
• A history of prospects you've researched, with pipeline stage and notes

This data never leaves your device. You can delete it any time by removing the extension from chrome://extensions or by clicking "Clear data" in Chrome's extension settings for Klosr.

What Klosr Does NOT Do

• We do not track your browsing outside LinkedIn profile pages.
• We do not read your LinkedIn messages, connections, feed, notifications, or any data outside the profile you are actively viewing.
• We do not sell, rent, or trade your data.
• We do not use your data to train AI models.
• We do not use advertising or tracking cookies.

Your Rights

You can stop all data collection immediately by disabling or removing the extension. You can request deletion of any server-side logs tied to your usage by contacting us at the address below.

Contact

Questions, data requests, or concerns: bosco@klosr.app

Klosr is built by an independent founder, not a company or team. This policy may be updated as the product evolves; the "Last updated" date at the top reflects the most recent change.