WriterSpy

WriterSpy is being rebuilt.

WriterSpy is a research tool for writers on Medium and Substack: where to publish and what is already being written about. A first test version ran briefly in October 2026. We have closed it and are rebuilding it properly.

What happened to the test version

The test version read public RSS feeds from Medium and Substack and stored article titles, links, author names and short excerpts. It was shut down on 26 October 2026, and its database was deleted. Nothing from it will be reused.

What the new version will be

The new WriterSpy will only use data sources whose terms allow this kind of use, will not track or rank individual writers, and will explain every number it shows.

Contact

Questions, corrections, or want to hear when it launches? Email hello@writerspy.com.