The decentralized social network Mastodon has officially updated its terms of service to strictly prohibit the scraping of user data for artificial intelligence model training. Effective July 1, the new policy mandates that no automated systems, including scrapers, spiders, or robots, may access data from the mastodon.social server for the purpose of developing large language models (LLMs).
Defending User Data Against AI Scrapers
Mastodon communicated the shift to its user base via email, emphasizing that unauthorized data extraction is now explicitly forbidden. The platform aims to protect the integrity of its fediverse by ensuring that content generated by its users is not harvested to fuel AI development without consent.
The updated legal language targets any tool used for data mining or automated gathering. While standard search engine indexing and browser caching remain permitted, any software designed to mass-extract content for machine learning is now a violation of the platform’s rules.
Scope and Limitations of the New Policy
It is critical to understand that these updated terms apply specifically to the mastodon.social instance. Because Mastodon operates as a decentralized network of independent servers, other instances within the fediverse may have different policies. Unless individual server administrators update their own terms of service, data on those specific nodes may remain accessible to scrapers.
Mastodon joins a growing list of platforms—including Reddit, OpenAI, and The Browser Company—that are increasingly aggressive in blocking AI companies from harvesting their ecosystem’s information.
Global Age Requirement Shift
Beyond the anti-scraping measures, Mastodon is implementing a significant change to its accessibility requirements. The platform is raising its minimum age limit to 16 for all users globally. Previously, the network allowed users as young as 13 in the United States, but this adjustment signals a move toward a more uniform and restrictive global standard for younger demographics.