Vercel AI SDK 7, Stripe's Agent Story, and Claude's Policy Reversal

Three distinct product signals today: Vercel shipped a unified API for running agent harnesses (Claude Code, Codex, Pi) in AI SDK 7, which quietly changes the build-vs-buy calculus for teams orchestrating agents; Stripe's Projects product expanded into a multi-provider agent workflow tool with new integrations; and Anthropic reversed a policy that would have blocked AI researchers from using Claude for competitive research, a rare moment of a company publicly correcting a trust-breaking move.