Create product specs

We need a product spec for the public API for search. Draft a spec that covers the purpose, user scenarios, success metrics, rate limits, authentication method, error codes, and backward-compatibility policy. Put the product manager's summary at the top, list API endpoints with request/response examples, and include a rollout checklist for engineering and support. Have it ready for the March 15 stakeholder review.

Before the stakeholder review, make the spec easier to approve: surface the primary user scenario and success metric at the top, make pricing and rate-limit implications findable, and flag any choices that would make legal or security teams hesitate. Call out any assumptions that change scope or schedule.

Legal just flagged our chosen token-based auth as inadequate two hours before the March 15 review. I cannot reach the security lead. What is the likely impact on the spec, what urgent evidence or fallback should I prepare to keep the review useful, and which quick wording changes could buy time without committing us to a final solution?

Over several releases we keep discovering missing edge-case requirements late in development, which causes last-minute scope creep and trust loss with engineering. Where does the process break down, and recommend one concrete change to how we gather and validate requirements so we catch those edge cases earlier.