Linkook
Operator: Linkook (JackJu1y)
Local Python tool that finds profiles, linked accounts and email addresses for a username.
People & Identity
Product
Linkook, a locally installable Python command-line program by JackJu1y.
Availability and source date
Active
As of: 17 October 2026.
No functionality test has been performed.
Use in OSINT research
Starts with a username and follows links between discovered profiles. Adds further usernames and publicly visible email addresses along the way.
Queries
| Input | Result | Result type |
|---|---|---|
| Username / alias | Discovered profiles, accounts linked from them, further usernames and email addresses. | Retrieved |
| Username / alias | Optional data breach references for the discovered email addresses from Hudson Rock or Have I Been Pwned. | Retrieved |
Features
- Searches for a username on the included platforms.
- Recursively follows linked profiles, including those with different usernames.
- Extracts linked accounts and email addresses from discovered profiles.
- Optionally checks discovered email addresses for data breaches through Hudson Rock or Have I Been Pwned.
- Exports accounts and relationships as JSON for Neo4j.
Categories
- People & Identity
- Username search
Coverage
Dataset
No dataset of its own. Supported websites are listed in the provider.json file; breach references come from external services.
Access
Installation and deployment
Locally installable
Runs as a Python program on your own computer. The README describes installation through pipx or pip and startup through the command line.
Requirements
Local Python installation through pipx or pip. Optional HIBP queries require your own paid HIBP subscription with an API key.
Export
Results folder and a Neo4j-compatible JSON file with accounts and relationships.
Provider
Linkook (JackJu1y)
Country of establishment
Unknown
Interfaces
No API, MCP or AI integration is documented.
Maintenance
Licence
MIT
Latest activity
Commit 10/2026
Stars
approx. 1,000 (as of 17 October 2026)
Legal note
Limitations
- Coverage depends on the configured websites and the profile links detectable there.
- Optional HIBP queries require your own API key and HIBP subscription.
Guides and practical reports
Official · Linkook: installation and use
JackJu1y · EN
Explains installation, linked-account searches, breach checks and Neo4j export.