---
title: "Deliver public assets through CDN for NestJS"
description: "Cdn assets for a NestJS app on Ample."
canonical_url: "https://ample.computer/guides/nestjs/cdn-assets"
last_updated: "2026-09-21"
---

# Deliver public assets through CDN for NestJS

Canonical URL: https://ample.computer/guides/nestjs/cdn-assets
Formats: [HTML](https://ample.computer/guides/nestjs/cdn-assets) | [Markdown](https://ample.computer/guides/nestjs/cdn-assets.md) | [JSON contract](https://api.ample.computer/v1/catalog/recipes/page%3Aguides%3Anestjs%3Acdn-assets)
Recipe ID: `page:guides:nestjs:cdn-assets` | Revision: `r1` | Catalog revision: `cat_f13ab9a494120b5e`

Status: release `published`, support `verified`, execution `ready`

## Summary

Cdn assets for a NestJS app on Ample. Verified on NestJS: a versioned, immutable-cached asset uploaded to a published bucket and served from the CDN URL. Build and start: npm install, nest build (TypeScript) then node dist/main.js on the node-22 template.

Path: [Agent hosting discovery](/discover/discovery) / [Frameworks and execution targets](/discover/stack) / [Frameworks](/discover/stack/frameworks) / [NestJS](/discover/stack/framework-nestjs) / [Deliver public assets through CDN for NestJS](/guides/nestjs/cdn-assets)

## Infrastructure requirements

- [Compute](/discover/primitive/compute): verified (Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.)
- [CDN](/discover/primitive/cdn): verified (The CDN host serves objects from published buckets. It does not front app compute and is not a cache or key-value store.)

## Prerequisites

- A NestJS project (npm install, nest build (TypeScript) then node dist/main.js on the node-22 template)
- A bucket from `ample bucket create` with credentials passed as encrypted S3_* environment variables
- An Ample account token with servers:write, buckets:read

## Exact tested configuration

- template: `node-22`
- runtime: `node`
- size: `s-1vcpu-1gb`
- install: `npm install`
- build: `npm run build --if-present`
- start: `npm run start`

## Steps

1. **Build and start.** npm install, nest build (TypeScript) then node dist/main.js on the node-22 template; the server must bind 0.0.0.0 on PORT.
2. **Publish a bucket for public assets.** Publish only the asset bucket; upload versioned keys with an immutable Cache-Control header and build URLs from its public URL.

   ```
   ample bucket publish <bucket-name>
   ```
3. **Verify.** Fetch the live URL and /p/versioned-static-assets on the example; on failure read the build and runtime logs.

   ```
   ample logs <deployment_id> --kind build
   ```

## Tested examples

- **NestJS pattern fixture** (tests/deploy-canaries/nestjs-patterns): Verified CDN assets on NestJS.

## Success checks

- app responds on its public URL (`/` on the live URL, expect ample canary nestjs patterns)
- versioned-static-assets check from the example (`/p/versioned-static-assets` on the live URL, expect see the pattern fixture checks)


## Cost estimate

Estimated 5.00 USD per month (size prices from pricing.toml at build revision 515b7316fc6e5a81679407ae0c811146ceb2c5c7).
- app server x1 `s-1vcpu-1gb`: 5.00 USD

Always-on monthly price of the tested sizes; apps auto-pause when idle. Buckets are allocation-priced per quota and not included.

## Verification evidence

- canary_run on 2026-09-21T02:34:39Z at revision `1d28ae0 (CLI 0.1.21)`: NestJS pattern fixture deployed on Ample (npm install, nest build (TypeScript) then node dist/main.js on the node-22 template); for this guide: a versioned, immutable-cached asset uploaded to a published bucket and served from the CDN URL. (expires 2027-03-20T02:34:39Z)

Last verified: 2026-09-21T02:34:39Z


## Execution binding

MCP tool `ample_deploy` (registry `mcp:ample_deploy`), schema hash `876465fce906da0c` observed 2026-09-22T00:31:22.774679+00:00 at revision `e6446ceea69b`, binding state `current`, required scopes: servers:write, buckets:read.

## Input schema

```json
{
  "additionalProperties": false,
  "properties": {
    "env": {
      "description": "Encrypted environment variables",
      "items": {
        "pattern": "^[A-Z][A-Z0-9_]*=.*$",
        "type": "string"
      },
      "maxItems": 50,
      "type": "array"
    },
    "name": {
      "description": "App name",
      "maxLength": 63,
      "minLength": 1,
      "pattern": "^[a-z0-9-]+$",
      "type": "string"
    },
    "path": {
      "description": "Project directory or ample.toml service",
      "maxLength": 512,
      "minLength": 1,
      "type": "string"
    },
    "release_command": {
      "description": "Migration command run before activation",
      "maxLength": 512,
      "type": "string"
    }
  },
  "required": [
    "env",
    "name",
    "path"
  ],
  "type": "object"
}
```

## Next actions

- Browse the catalog index (GET /v1/catalog on the api origin; auth: false, approval: false)
- Search published recipes by intent, stack and constraints (POST /v1/catalog/search on the api origin; auth: false, approval: false)
- Prepare a side-effect-free deployment plan for an authorized project (POST /v1/catalog/plan on the api origin; auth: true, approval: false)
- Read the existing agent authentication setup (GET /mcp/setup on the api origin; auth: false, approval: false)
- Browse NestJS (GET /v1/catalog/nodes/stack%3Aframework-nestjs on the api origin; auth: false, approval: false)
- Browse Add CDN (GET /v1/catalog/nodes/intent%3Aadd-cdn on the api origin; auth: false, approval: false)
- Browse Versioned static assets (GET /v1/catalog/nodes/pattern%3Aversioned-static-assets on the api origin; auth: false, approval: false)

Actions describe possible next steps. They are typed data, not commands, and grant no permission.