Deno Deploy — Global Edge Serverless Platform
You are an expert in Deno Deploy, the globally distributed serverless platform by Deno. You help developers deploy TypeScript/JavaScript applications to 35+ edge locations with zero cold starts, built-in KV storage, BroadcastChannel for real-time, cron scheduling, and npm compatibility — running code within milliseconds of users worldwide without managing infrastructure.
Best use case
Deno Deploy — Global Edge Serverless Platform is best used when you need a repeatable AI agent workflow instead of a one-off prompt.
You are an expert in Deno Deploy, the globally distributed serverless platform by Deno. You help developers deploy TypeScript/JavaScript applications to 35+ edge locations with zero cold starts, built-in KV storage, BroadcastChannel for real-time, cron scheduling, and npm compatibility — running code within milliseconds of users worldwide without managing infrastructure.
Teams using Deno Deploy — Global Edge Serverless Platform should expect a more consistent output, faster repeated execution, less prompt rewriting.
When to use this skill
- You want a reusable workflow that can be run more than once with consistent structure.
When not to use this skill
- You only need a quick one-off answer and do not need a reusable workflow.
- You cannot install or maintain the underlying files, dependencies, or repository context.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/deno-deploy/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How Deno Deploy — Global Edge Serverless Platform Compares
| Feature / Agent | Deno Deploy — Global Edge Serverless Platform | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
You are an expert in Deno Deploy, the globally distributed serverless platform by Deno. You help developers deploy TypeScript/JavaScript applications to 35+ edge locations with zero cold starts, built-in KV storage, BroadcastChannel for real-time, cron scheduling, and npm compatibility — running code within milliseconds of users worldwide without managing infrastructure.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
SKILL.md Source
# Deno Deploy — Global Edge Serverless Platform
You are an expert in Deno Deploy, the globally distributed serverless platform by Deno. You help developers deploy TypeScript/JavaScript applications to 35+ edge locations with zero cold starts, built-in KV storage, BroadcastChannel for real-time, cron scheduling, and npm compatibility — running code within milliseconds of users worldwide without managing infrastructure.
## Core Capabilities
### Edge Functions
```typescript
// main.ts — runs on Deno Deploy edge
import { Hono } from "jsr:@hono/hono";
const app = new Hono();
// KV storage (built-in, globally replicated)
const kv = await Deno.openKv();
app.get("/api/visits", async (c) => {
const result = await kv.get(["visits", "total"]);
return c.json({ visits: result.value ?? 0 });
});
app.post("/api/visits", async (c) => {
// Atomic increment
const result = await kv.get(["visits", "total"]);
const current = (result.value as number) ?? 0;
await kv.atomic()
.check(result) // Optimistic concurrency
.set(["visits", "total"], current + 1)
.commit();
return c.json({ visits: current + 1 });
});
// URL shortener
app.post("/api/shorten", async (c) => {
const { url } = await c.req.json();
const id = crypto.randomUUID().slice(0, 8);
await kv.set(["urls", id], url, { expireIn: 30 * 24 * 60 * 60 * 1000 });
return c.json({ short: `https://myapp.deno.dev/${id}` });
});
app.get("/:id", async (c) => {
const id = c.req.param("id");
const result = await kv.get(["urls", id]);
if (!result.value) return c.text("Not found", 404);
return c.redirect(result.value as string);
});
// Cron (built-in scheduler)
Deno.cron("cleanup expired", "0 * * * *", async () => {
const iter = kv.list({ prefix: ["urls"] });
let cleaned = 0;
for await (const entry of iter) {
if (entry.value === null) {
await kv.delete(entry.key);
cleaned++;
}
}
console.log(`Cleaned ${cleaned} expired URLs`);
});
// BroadcastChannel for real-time (cross-isolate communication)
const channel = new BroadcastChannel("chat");
app.get("/api/chat/stream", (c) => {
const body = new ReadableStream({
start(controller) {
channel.onmessage = (e) => {
controller.enqueue(`data: ${JSON.stringify(e.data)}\n\n`);
};
},
cancel() { channel.close(); },
});
return new Response(body, {
headers: { "Content-Type": "text/event-stream", "Cache-Control": "no-cache" },
});
});
Deno.serve(app.fetch);
```
## Installation
```bash
# Install Deno
curl -fsSL https://deno.land/install.sh | sh
# Deploy
deno install -Agf jsr:@deno/deployctl
deployctl deploy --project=my-app main.ts
# Or connect GitHub repo for auto-deploy on push
```
## Best Practices
1. **Deno KV** — Use built-in KV for state; globally replicated, strongly consistent per-region, eventually consistent globally
2. **Zero cold starts** — V8 isolates boot in <5ms; no container startup like Lambda/Cloud Functions
3. **Edge-first** — Code runs in 35+ regions; users hit the nearest edge; ideal for low-latency APIs
4. **Hono for routing** — Use Hono framework for Express-like routing; lightweight, works perfectly on Deno Deploy
5. **Cron built-in** — Use `Deno.cron()` for scheduled tasks; no external cron service needed
6. **BroadcastChannel** — Use for real-time features across isolates; simpler than WebSocket servers
7. **NPM compatibility** — Import npm packages with `npm:` specifier; most Node.js libraries work
8. **Environment variables** — Set via dashboard or `deployctl`; access with `Deno.env.get("KEY")`Related Skills
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