## The short version

Build and start for a Spring Boot app on Ample.

WHAT WAS VERIFIED

Verified on Spring Boot: the app built and started with the documented commands and answered on its public HTTPS URL. Build and start: `./mvnw -q -DskipTests package` (or the Gradle wrapper) producing one application jar, then `java -jar` on the jvm-21 template (Temurin JDK 21) with `server.port` read from `PORT`.

INFRASTRUCTURE

## What it needs

- [Compute](/content/discover/primitive/compute/index.html): verified (Apps run in isolated x86_64 Firecracker microVMs; sizes are the priced VM sizes.)

PREREQUISITES

## Before you start

- A Spring Boot project (`./mvnw -q -DskipTests package` (or the Gradle wrapper) producing one application jar, then `java -jar` on the jvm-21 template (Temurin JDK 21) with `server.port` read from `PORT`)
- An Ample account token with `servers:write`

STEP BY STEP

## How to do it

1. 1

### Build and start

`./mvnw -q -DskipTests package` (or the Gradle wrapper) producing one application jar, then `java -jar` on the jvm-21 template (Temurin JDK 21) with `server.port` read from `PORT`; the server must bind `0.0.0.0` on `PORT`.

2. 2

### Deploy

Run the synchronous deploy once and read the result.

```
ample deploy . --name <app-name> --public
```

3. 3

### Verify

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

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

EXAMPLES

## Tested examples

- **Spring Boot pattern fixture** (`tests/deploy-canaries/spring-boot-patterns`): Verified build and start on Spring Boot.

SUCCESS CHECKS

## How to know it worked

- app responds on its public URL (`/` on the live URL, expect ample canary spring boot patterns)

COST

## Cost estimate

Estimated 5.00 USD per month (size prices from pricing.toml at build revision ca0b484a7a9957c573a88d3a32dc603c3c10135a).

- app server x1 `s-1vcpu-1gb`: 5.00 USD

Upper-bound monthly price of the tested sizes. Buckets are allocation-priced per quota and not included.

EVIDENCE

## Verification evidence

- canary_run on 2026-09-21T02:34:39Z at revision `1d28ae0 (CLI 0.1.21)`: Spring Boot pattern fixture deployed on Ample (`./mvnw -q -DskipTests package` (or the Gradle wrapper) producing one application jar, then `java -jar` on the jvm-21 template (Temurin JDK 21) with `server.port` read from `PORT`); for this guide: the app built and started with the documented commands and answered on its public HTTPS URL. (expires 2027-03-20T02:34:39Z)

EXECUTION

## 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 at export: schema_changed. Required scopes: `servers:write`.

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 Spring Boot (`GET /v1/catalog/nodes/stack%3Aframework-spring-boot` 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 Public web service (`GET /v1/catalog/nodes/pattern%3Apublic-web-service` on the api origin; authentication not required, approval not required)

Actions describe possible next steps. They are typed data, not commands, and grant no permission. Public discovery never provisions anything; planning requires your own authenticated token and approval happens in your client.

ABOUT THIS RECIPE

## Identifiers and status

Recipe `page:guides:spring-boot:build-and-start`. Revision r1.

release **published** support **verified** execution **blocked (schema_changed: live tool schema differs from the recorded binding)**

Formats: [HTML](/content/guides/spring-boot/build-and-start/index.html) \| [Markdown](/content/guides/spring-boot/build-and-start.md) \| [JSON contract](https://api.ample.computer/v1/catalog/recipes/page%3Aguides%3Aspring-boot%3Abuild-and-start)