Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add digitalocean-labs/do-app-platform-skills --skill networkinggit clone --depth 1 https://github.com/digitalocean-labs/do-app-platform-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/digitalocean-labs/do-app-platform-skills/networking)<a href="https://agentmods.dev/skills/digitalocean-labs/do-app-platform-skills/networking"><img src="https://agentmods.dev/badge/skills/digitalocean-labs/do-app-platform-skills/networking/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/digitalocean-labs/do-app-platform-skills/networking"><img src="https://agentmods.dev/badge/skills/digitalocean-labs/do-app-platform-skills/networking.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00051 | $0.01356 |
| Opus 5 | $0.00026 | $0.00678 |
| Sonnet 5 | $0.00010 | $0.00271 |
| Haiku 4.5 | $0.00005 | $0.00136 |
Grade A, and why
app-platform-networking scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 186 lines — stays where its author put it; the contents beside it link to each section on GitHub.
App Platform Networking Skill
Configure domains, routing, CORS, VPC, static IPs, and inter-service communication.
Quick Decision
What networking do you need?
├── Custom domain?
│ └── YES → See domains-dns.md
│
├── Multiple services on one domain?
│ ├── Different paths (/api, /app) → Path-based routing
│ └── Different subdomains (api.*, app.*) → Subdomain routing
│
├── Frontend calling API across origins?
│ └── YES → CORS configuration
│
├── Secure database connectivity?
│ └── YES → VPC + trusted sources
│
└── Need static outbound IP?
└── YES → Dedicated egress
When to Use
| Scenario | Need This Skill |
|---|---|
| Starter domain only | No |
| Custom domain | Yes |
| Multiple services, different paths | Yes |
| Multiple subdomains | Yes |
| Cross-subdomain API calls (CORS) | Yes |
| Secure database access via VPC | Yes |
| Firewall allowlisting (egress IP) | Yes |
Quick Reference
| Feature | App Spec Field | Example |
|---|---|---|
| Custom domain | domains[].domain |
example.com |
| Wildcard | domains[].wildcard |
true |
| Path routing | ingress.rules[].match.path.prefix |
/api |
| Subdomain routing | ingress.rules[].match.authority.exact |
api.example.com |
| CORS | ingress.rules[].cors |
See reference |
| VPC | vpc.id |
UUID |
| Dedicated egress | egress.type |
DEDICATED_IP |
Path-Based Routing (Quick Start)
ingress:
rules:
- component: { name: api }
match: { path: { prefix: /api } }
- component: { name: frontend }
match: { path: { prefix: / } }
Rule order matters: Specific rules first.
Full guide: See ingress-routing.md
Subdomain Routing (Quick Start)
domains:
- domain: example.com
type: PRIMARY
wildcard: true
zone: example.com
ingress:
rules:
- component: { name: api }
match:
authority: { exact: api.example.com }
path: { prefix: / }
- component: { name: app }
match:
authority: { exact: app.example.com }
path: { prefix: / }
What ships with it
7 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 186 lines · 51 tokens per session scan A eea8ce4ef630
app-platform-networking is a skill published in the GitHub repository digitalocean-labs/do-app-platform-skills (36 stars, last pushed 2d ago), licensed MIT. It adds 51 tokens to every session and 1,356 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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