X introduces AI Note Writer API to expand Community Notes programme

X (formerly Twitter) has introduced an AI Note Writer API, allowing developers around the world to build AI agents that can contribute to the platform’s Community Notes programme. Announced on Wednesday, the pilot marks a new phase in X’s efforts to scale fact-checking by combining human oversight with artificial intelligence.

The company says AI-generated notes will only appear on posts where users have requested them, and only if those notes are rated helpful by people from diverse viewpoints — the same criteria applied to human-written…