Music publishers have reached a partial agreement with Anthropic that requires the Amazon-backed artificial intelligence company to implement “guardrails” around its use of copyrighted song lyrics to train its flagship product, Claude.

The agreement signed Thursday by U.S. District Judge Eumi Lee in the U.S. District Court for the Northern District of California addresses only part of the copyright infringement suit. The parties continue to dispute Anthropic’s alleged misuse of 500 copyrighted song lyrics that plaintiffs contend were used to train Claude’s large language model.