app-platform-networking

Configure domains, routing, CORS, VPC, static IPs, and inter-service communication for DigitalOcean App Platform.

What This Skill Does

• Configures custom domains with DNS and TLS
• Sets up path-based and subdomain routing via ingress rules
• Configures CORS for cross-origin API access
• Enables VPC networking for secure database connectivity
• Manages static egress IPs for firewall allowlisting

Quick Start

# Path-based routing
ingress:
  rules:
    - component: { name: api }
      match: { path: { prefix: /api } }
    - component: { name: frontend }
      match: { path: { prefix: / } }

Key Decisions This Skill Makes

| Decision | Default | Rationale | |----------|---------|-----------| | VPC connectivity | VPC CIDR whitelisting | More reliable than app-based rules | | CORS credentials | Exact origins only | Required when allow_credentials: true | | TLS certificates | Auto-provisioned | Let's Encrypt + Google Trust | | Ingress order | Specific rules first | Prevents catch-all conflicts |

Files

• SKILL.md — Complete skill documentation with quick starts
• reference/domains-dns.md — Domain types, DNS setup, wildcards, TLS
• reference/ingress-routing.md — Path routing, rewrites, redirects
• reference/cors-configuration.md — CORS fields, patterns, credentials
• reference/vpc-trusted-sources.md — VPC setup, trusted sources matrix
• reference/static-ips-egress.md — Ingress IPs, dedicated egress
• reference/complete-patterns.md — 5 complete architecture patterns

Integration

| Direction | Skill | Integration | |-----------|-------|-------------| | → | designer | Add domains/ingress to app spec | | → | troubleshooting | Debug DNS, CORS, VPC issues | | → | postgres | VPC connectivity for databases | | → | deployment | Deploy networking changes |

Related Skills

• designer — Include networking in app architecture
• postgres — Database VPC configuration
• troubleshooting — Debug connectivity issues