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How Nod Built a Human-Approval API for AI Agents Using Vercel and Aurora

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Nod is an approval API designed to pause AI agents, scripts, or automated workflows and request human sign-off before proceeding with risky actions. The platform allows humans to approve or reject requests via Slack or a web dashboard, after which Nod issues a signed callback so the application can continue safely. The web dashboard, built on Vercel, enables teams to manage workspaces, roles, approval policies, API keys, and audit logs. Amazon Aurora PostgreSQL serves as the core database, tracking the full lifecycle of each approval request — from pending through approved, rejected, expired, or canceled states. AWS Lambda workers handle background tasks such as sending Slack notifications, dispatching signed callbacks, and expiring stale approvals.

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How Nod Built a Human-Approval API for AI Agents Using Vercel and Aurora · ShortSingh