Source: Nate’s Substack
OpenAI is severing API access for Cursor's embedded models on November 12 without user consent or action, forcing millions of developers to either pay for new integrations or switch tools entirely. This unilateral contract change—where a core service simply stops working—exposes the fragility of building consumer workflows on closed-platform AI services that treat developers as captive users rather than partners. The vulnerability is the legal asymmetry that lets AI vendors rewrite terms mid-relationship, making "audit your prompts" survival advice rather than optional optimization.