INFRASTRUCTURE

What it needs

• 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.)
• Postgres: verified (Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database and no DATABASE_URL is supplied.)

PREREQUISITES

Before you start

• A NestJS project (npm install, nest build (TypeScript) then node dist/main.js on the node-22 template)
• A PostgreSQL driver reading DATABASE_URL at runtime
• An Ample account token with servers:write, databases:read

TESTED CONFIGURATION

Exactly what was tested

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

STEP BY STEP

How to do it

1. 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. 2

Run migrations as the release command

Ample runs the command before activation and fails the release if it exits non-zero; keep migrations idempotent.

ample deploy . --name <app-name> --public --release-command "node migrate.cjs"

3. 3

Verify

Fetch the live URL and /p/migrated on the example; on failure read the build and runtime logs.

ample logs <deployment_id> --kind build

EXAMPLES

Tested examples

• NestJS pattern fixture (tests/deploy-canaries/nestjs-patterns): Verified schema changes on NestJS.

SUCCESS CHECKS

How to know it worked

• app responds on its public URL (/ on the live URL, expect ample canary nestjs patterns)
• migrated check from the example (/p/migrated on the live URL, expect see the pattern fixture checks)

LIMITATIONS

Know the limits

• Verified on the node-22 template at s-1vcpu-1gb; other sizes and NestJS major versions are not verified.
• Region, compliance attestations and request-duration limits are unknown and not claimed.
• Managed PostgreSQL 16 only; extensions, connection limits and backup or restore procedures are not verified.

COST

Cost estimate

Estimated 10.00 USD per month (size prices from pricing.toml at build revision a1b8c38919e59cd035ebabaced73cf84ece24371).

• app server x1 s-1vcpu-1gb: 5.00 USD
• managed PostgreSQL database 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.

EVIDENCE

Verification evidence

• canary_run on 2026-09-21T02:34:39Z at revision 1d28ae0-dirty (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 --release-command migration ran before activation and its marker was readable by the live app (migrated=release-ok). (expires 2027-03-20T02:34:39Z)

EXECUTION

Execution binding

MCP tool ample_deploy (registry mcp:ample_deploy), schema hash 876465fce906da0c observed 2026-09-21T03:19:59.461917+00:00 at revision 49962bcade4f. Binding state at export: current. Required scopes: servers:write, databases:read.

NEXT ACTIONS

Typed next actions

• Browse the catalog index (GET /v1/catalog on the api origin; authentication not required, approval not required)
• Search published recipes by intent, stack and constraints (POST /v1/catalog/search on the api origin; authentication not required, approval not required)
• Prepare a side-effect-free deployment plan for an authorized project (POST /v1/catalog/plan on the api origin; authentication required, approval not required)
• Read the existing agent authentication setup (GET /mcp/setup on the api origin; authentication not required, approval not required)
• Browse NestJS (GET /v1/catalog/nodes/stack%3Aframework-nestjs on the api origin; authentication not required, approval not required)
• Browse Configure deployment (GET /v1/catalog/nodes/intent%3Aconfigure-deployment on the api origin; authentication not required, approval not required)
• Browse Transactional workflows (GET /v1/catalog/nodes/pattern%3Atransactional-workflows on the api origin; authentication not required, approval not required)