### Host ai workflow runner with ASP.NET Core: stored input and output artifacts

**Summary:** Deploy a ai workflow runner built with ASP.NET Core on Ample using the generated downloads pattern. Compute runs the app in an isolated microVM behind a public HTTPS URL, a managed PostgreSQL 16 database is auto-provisioned and injected as DATABASE_URL, a private S3-compatible bucket holds objects with credentials delivered as encrypted environment variables. Verified on ASP.NET Core: an export query rendered to a CSV artifact stored with metadata in a private bucket and returned only to an authorized caller (401 without token, export=ok rows=3). Not separately tested: your export formats, retention policy and entitlement model; treat the ai workflow runner-specific behavior as your application code.

#### Representative Queries
- Host ai workflow runner with ASP.NET Core: stored input and output artifacts
- Where can I host AI workflow runner built with ASP.NET Core?
- I need an input/output artifact contract, object metadata and access boundaries.

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

#### Infrastructure Requirements
- **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.
- **Postgres**
  - Status: verified
  - Summary: Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database and no DATABASE_URL is supplied.
- **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.

#### Prerequisites
- A ASP.NET Core project that builds and starts with the documented commands (dotnet publish -c Release -o out in the builder, then dotnet .dll on the dotnet-10 template with ASPNETCORE_URLS bound to PORT)
- A PostgreSQL driver reading DATABASE_URL at runtime (auto-provisioned when omitted, or supplied with --env)
- A bucket from `ample bucket create` with its credentials passed as encrypted S3_* environment variables
- An Ample account token with servers:write, databases:read, buckets:read

#### Workflow Steps
1. **Build and start**  
   `dotnet publish -c Release -o out in the builder, then dotnet .dll on the dotnet-10 template with ASPNETCORE_URLS bound to PORT. The server must bind 0.0.0.0 on PORT.`
2. **Implement the pattern on PostgreSQL**  
   `The fixture's module implements generated downloads: an export query rendered to a CSV artifact stored with metadata in a private bucket and returned only to an authorized caller (401 without token, export=ok rows=3). Copy the approach into your schema; keep migrations idempotent and run them with --release-command.`
3. **Wire object storage**  
   `Create the bucket(s), then pass endpoint, region, bucket and keys as --env values. Use path-style addressing. Keep private data in an unpublished bucket.`
4. **Deploy**  
   `Run the synchronous deploy once and read the result (exit 0 live, 1 failed, 2 blocked). Re-running with no change is a no-op.`
   ```
   ample deploy . --name  --public --env S3_ENDPOINT=... --env S3_REGION=... --env S3_BUCKET=... --env S3_ACCESS_KEY_ID=... --env S3_SECRET_ACCESS_KEY=...
   ```
5. **Verify**  
   `Fetch the live URL and the pattern self-test route(s) (/p/generated-downloads) from the example; then run your own checks. On failure read `ample logs  --kind build` then `--kind runtime`.`
   ```
   ample logs  --kind build
   ```

#### Success Checks
- app responds on its public URL
- generated-downloads self-test

#### Limitations
- Verified on the dotnet-10 template at s-1vcpu-1gb with the example fixture; other sizes, templates and ASP.NET Core major versions are not verified.
- The ai workflow runner itself (your export formats, retention policy and entitlement model) is application code and was not separately tested; the pattern checks are what was verified.

#### Cost Estimate
- **Monthly Amount:** $10.00
- **Components:**
   - App Server: $5.00
   - Managed PostgreSQL Database: $5.00
- **Note:** Always-on monthly price of the tested sizes; apps and databases auto-pause when idle.

#### Examples
- **ASP.NET Core Pattern Fixture**: Multi-pattern ASP.NET Core app whose generated downloads module was checked live; the module is under tests/deploy-canaries/_pattern-modules.

### Evidence Summary
- ASP.NET Core pattern fixture deployed on Ample; checks passed for generated-downloads and configuration-secrets.

### Next Actions
- [Browse the catalog index](api/v1/catalog)
- [Search published recipes by intent, stack and constraints](api/v1/catalog/search)  
  *Parameters:* `{ "limit": 5, "query": "Host ai workflow runner with ASP.NET Core: stored input and output artifacts" }`
- [Prepare a side-effect-free deployment plan for an authorized project](api/v1/catalog/plan)  
  *Parameters:* `{ "inputs": {}, "projectId": "", "recipeId": "page:recipes:ai-workflow-runner:asp-net-core:artifact-storage", "recipeRevision": "r1" }`  
- Further actions available as needed.