# Configure S3-compatible access for Fastify

## Summary
Object storage client for a Fastify app on Ample. Verified on Fastify: bucket credentials delivered as encrypted S3_* environment variables and a validated PutObject/GetObject round-trip linked to a database row (upload=ok linked=ok). Build and start: npm install, npm run build --if-present, npm run start on the node-22 template.

## Resource Requirements
- `primitive:compute`
- `primitive:s3-compatible-object-storage`

## Infrastructure Requirements
1. **Compute**
   - **Status**: verified
   - **Summary**: Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.
   - **Path**: /discover/primitive/compute
2. **S3-compatible object storage**
   - **Status**: verified
   - **Summary**: Buckets are S3-compatible with issued credentials; PutObject and GetObject are verified by canary. Other S3 operations are not verified.
   - **Path**: /discover/primitive/s3-compatible-object-storage

## Prerequisites
- A Fastify project (npm install, npm run build --if-present, npm run start 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

## Workflow Steps
1. **Build and start**  
npm install, npm run build --if-present, npm run start on the node-22 template; the server must bind 0.0.0.0 on PORT.

2. **Create the bucket and pass its credentials**  
Create it once with `ample bucket create`, then pass endpoint, region, bucket and keys with --env; use path-style addressing.  
Command: `ample deploy . --name  --public --env S3_ENDPOINT=... --env S3_REGION=... --env S3_BUCKET=... --env S3_ACCESS_KEY_ID=... --env S3_SECRET_ACCESS_KEY=...`

3. **Verify**  
Fetch the live URL and /p/browser-file-uploads on the example; on failure read the build and runtime logs.  
Command: `ample logs  --kind build`

## Examples
### Fastify pattern fixture
- **Description**: Verified object storage client on Fastify.
- **Source Ref**: tests/deploy-canaries/fastify-patterns

## Success Checks
1. **App responds on its public URL**  
Kind: `http_get`, Path: `/`, Expect: `ample canary fastify patterns`

2. **Browser-file-uploads check from the example**  
Kind: `http_get`, Path: `/p/browser-file-uploads`, Expect: `see the pattern fixture checks`

## Limitations
- Verified on the node-22 template at s-1vcpu-1gb; other sizes and Fastify major versions are not verified.
- Region, compliance attestations and request-duration limits are unknown and not claimed.
- PutObject and GetObject with path-style addressing are verified; other S3 operations are not.

## Cost Estimate
- **Currency**: USD
- **Monthly Amount**: 5.0
- **Basis**: size prices from pricing.toml (loaded by the API) at build revision 1ac5595375130d45290090e82ed0f554ccd45405-dirty.
- **Components**:
  - Name: app server  
    Size: s-1vcpu-1gb  
    Quantity: 1.0  
    Monthly Amount: 5.0  
- **Note**: Always-on monthly price of the tested sizes; apps auto-pause when idle. Buckets are allocation-priced per quota and not included.

## Evidence Summary
- **Kind**: canary_run  
  **Summary**: Fastify pattern fixture deployed on Ample (npm install, npm run build --if-present, npm run start on the node-22 template); for this guide: bucket credentials delivered as encrypted S3_* environment variables and a validated PutObject/GetObject round-trip linked to a database row (upload=ok linked=ok).
  **Observed At**: 2026-09-21T01:14:18Z
  **Implementation Revision**: 50dbac567d2c5cc8e55e6c748a646be0025d9cfb-dirty (CLI 0.1.21)  
  **Expires At**: 2027-03-20T01:14:18Z
  **Scope**: {"checks":["/p/browser-file-uploads"],"template":"node-22"}

## Formats
- [HTML](/content/guides/fastify/object-client/index.html)
- [Markdown](/content/guides/fastify/object-client.md)
- [JSON](https://api.ample.computer/v1/catalog/recipes/page%3Aguides%3Afastify%3Aobject-client)

## Next Actions
1. **Browse the catalog index**  
   Action ID: `browse-catalog`, Method: `GET`
2. **Search published recipes by intent, stack and constraints**  
   Action ID: `search-recipes`, Method: `POST`
3. **Prepare a side-effect-free deployment plan for an authorized project**  
   Action ID: `plan:page:guides:fastify:object-client`, Method: `POST`
4. **Read the existing agent authentication setup**  
   Action ID: `auth-setup`, Method: `GET`
5. **Browse Fastify**  
   Action ID: `browse:stack:framework-fastify`, Method: `GET`
6. **Browse Connect app to storage**  
   Action ID: `browse:intent:connect-app-to-storage`, Method: `GET`
7. **Browse Browser file uploads**  
   Action ID: `browse:pattern:browser-file-uploads`, Method: `GET`