According to reports, the online publishing platform Medium has launched a writing application called TK, integrating an AI assistant into the editor. Users can input "@TK" to request editing suggestions, title feedback, alignment with Medium’s publication style guidelines, retrieve previously saved text, organize writing content, and receive prompts. TK allows authors to publish disclosures transparently detailing how AI is used in their writing;

The app optionally enables connection to users’ own AI Agents via MCP Server or Claude Skill to access project and memory data. TK currently offers a web version, with desktop applications still in planning; it supports importing and exporting Markdown files, though content is unencrypted and users can set access permissions. Medium account holders can use TK free of charge.