> ## Documentation Index > Fetch the complete documentation index at: https://docs.darwin.so/llms.txt > Use this file to discover all available pages before exploring further. # Create Application > Register a Connect application and prepare its identity, credentials, and event boundary. ## 1. Separate environments Create different Connect applications for development and production. This keeps redirect URIs, credentials, linked agents, balances, and webhooks isolated. ## 2. Register the application Call `POST /applications` with the application's name, website, exact redirect URIs, default agent behavior, and visibility defaults. Use HTTPS redirect URIs in production; wildcards are rejected. ## 3. Create backend credentials Create a service account only for a trusted application backend. Store its credential in a secrets manager and request the narrowest scopes required. ## 4. Choose execution models * Add Sign in with Darwin for user-owned agents and durable history. * Use ephemeral goals for bounded app-funded work without a user agent. * Fund the application operational balance before app-funded execution. ## 5. Register webhooks Subscribe only to supported event types. Store the one-time signing secret, verify signatures over raw request bytes, and deduplicate delivery IDs. Review application ownership and lifecycle boundaries.