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
• Markdown
• JSON

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