### Host member portal with Flask: tenant-scoped workspaces

Deploy a member portal built with Flask on Ample using the multi-tenant relational data 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. Verified on Flask: a tenant column on every row and query, with a cross-tenant read returning nothing (tenant_isolation=ok). Not separately tested: your tenant model, membership and per-tenant authorization; treat the member portal-specific behavior as your application code.

#### Representative Queries
- Host member portal with Flask: tenant-scoped workspaces
- Where can I host Member portal built with Flask?
- I need an explicit tenant model and application-enforced tenant isolation tests.

### Resource Requirements
- `primitive:compute`
- `primitive:postgres`

### 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.
2. **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.

### Framework
Flask  
### Workload
Member portal  
### Release Status
Published  
### Support Status
Verified  
### Execution Status
Ready  
### Prerequisites
- A Flask project that builds and starts with the documented commands (pip install into .ample/python from requirements.txt, then waitress from app.py reading PORT on the python-3.12 template)
- A PostgreSQL driver reading DATABASE_URL at runtime (auto-provisioned when omitted, or supplied with --env)
- An Ample account token with servers:write, databases:read

### Tested Configuration
- Template: python-3.12
- Runtime: python
- Size: s-1vcpu-1gb
- Install: `python3 -m pip install --target .ample/python -r requirements.txt`
- Start: `PYTHONPATH=.ample/python:${PYTHONPATH:-} python3 app.py`

### Input Schema
```json
{"additionalProperties":false,"properties":{"env":{"description":"Encrypted environment variables (bucket credentials, secrets)","items":{"pattern":"^[A-Z][A-Z0-9_]*=.*$","type":"string"},"maxItems":50,"type":"array"},"name":{"description":"App name","maxLength":63,"minLength":1,"pattern":"^[a-z0-9-]+$","type":"string"},"path":{"description":"Project directory or ample.toml service","maxLength":512,"minLength":1,"type":"string"},"release_command":{"description":"Migration command run before activation","maxLength":512,"type":"string"},"start":{"description":"Start command (Python apps pass one explicitly)","maxLength":512,"type":"string"}},"required":["name","path","start"],"type":"object"}
```

### Workflow Steps
1. **Build and start**  
   pip install into .ample/python from requirements.txt, then waitress from app.py reading PORT on the python-3.12 template. The server must bind 0.0.0.0 on PORT.
2. **Implement the pattern on PostgreSQL**  
   The fixture's module implements multi-tenant relational data: a tenant column on every row and query, with a cross-tenant read returning nothing (tenant_isolation=ok). Copy the approach into your schema; keep migrations idempotent and run them with --release-command.
3. **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 --start "python3 app.py"
   ```
4. **Verify**  
   Fetch the live URL and the pattern self-test route(s) (/p/multi-tenant-relational-data) from the example; then run your own checks. On failure read `ample logs  --kind build` then `--kind runtime`.  
   ```
   ample logs  --kind build
   ```

### Examples
- **Title:** Flask pattern fixture  
  **Description:** Multi-pattern Flask app whose multi-tenant relational data module was checked live; the module is under tests/deploy-canaries/_pattern-modules.  
  **Source Ref:** tests/deploy-canaries/flask-patterns

### Success Checks
1. **App responds on its public URL**  
   - Kind: http_get  
   - Path: /  
   - Expect: ample canary flask patterns  
2. **Multi-tenant-relational-data self-test**  
   - Kind: http_get  
   - Path: /p/multi-tenant-relational-data  
   - Expect: tenant_isolation=ok

### Limitations
- Verified on the python-3.12 template at s-1vcpu-1gb with the example fixture; other sizes, templates and Flask major versions are not verified.
- The member portal itself (your tenant model, membership and per-tenant authorization) is application code and was not separately tested; the pattern checks are what was verified.
- Region, compliance attestations and request-duration limits are unknown and not claimed.
- Apps auto-pause when idle and wake on the next request; always-on is an operator setting, not a plan feature.
- Managed PostgreSQL 16 only; extensions, connection limits and backup or restore procedures are not verified; apps and their databases are placed together.

### Cost Estimate
- **Currency:** USD  
- **Monthly Amount:** 10.0  
- **Authoritative:** true  
- **Basis:** size prices from pricing.toml (loaded by the API) at build revision 1ac5595375130d45290090e82ed0f554ccd45405-dirty  
- **Components:**  
  - **App server:**  
    - Size: s-1vcpu-1gb  
    - Quantity: 1.0  
    - Monthly Amount: 5.0  
  - **Managed PostgreSQL database:**  
    - Size: s-1vcpu-1gb  
    - Quantity: 1.0  
    - Monthly Amount: 5.0  
- **Note:** Always-on monthly price of the tested sizes; apps and databases auto-pause when idle. Buckets are allocation-priced per quota and not included.

### Evidence Summary
1. **Kind:** canary_run  
   **Summary:** Flask pattern fixture deployed on Ample (pip install into .ample/python from requirements.txt, then waitress from app.py reading PORT on the python-3.12 template); checks passed for multi-tenant-relational-data and configuration-secrets. Pattern proof: a tenant column on every row and query, with a cross-tenant read returning nothing (tenant_isolation=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/multi-tenant-relational-data  
     - **Pattern:** pattern:multi-tenant-relational-data  
     - **Template:** python-3.12  
2. **Kind:** canary_run  
   **Summary:** The same Flask app deployed with a --release-command migration; the marker it created was readable after activation.  
   **Observed At:** 2026-09-20T01:54:51Z  
   **Implementation Revision:** 199ff1dfd52683832ae75d3f98b53a7a4bff7f96-dirty (CLI e3181f5)  
   **Expires At:** 2027-03-19T01:54:51Z  
   - **Scope:**  
     - **Pattern:** pattern:multi-tenant-relational-data

### Last Verified At
2026-09-21T01:14:18Z

### Unknowns
- Region availability is unknown until a verified region fact is recorded
- Compliance attestations are unknown; none are claimed

### Next Actions
1. **Action ID:** browse-catalog  
   **Label:** Browse the catalog index  
   **Method:** GET  
   **Path:** /v1/catalog  
   **Requires Authentication:** false
2. **Action ID:** search-recipes  
   **Label:** Search published recipes by intent, stack and constraints  
   **Method:** POST  
   **Path:** /v1/catalog/search  
   **Requires Authentication:** false
3. **Action ID:** plan:page:recipes:member-portal:flask:tenant-workspaces  
   **Label:** Prepare a side-effect-free deployment plan for an authorized project  
   **Method:** POST  
   **Path:** /v1/catalog/plan  
   **Requires Authentication:** true
4. **Action ID:** auth-setup  
   **Label:** Read the existing agent authentication setup  
   **Method:** GET  
   **Path:** /mcp/setup  
   **Requires Authentication:** false
5. **Action ID:** browse:workload:member-portal  
   **Label:** Browse Member portal  
   **Method:** GET  
   **Path:** /v1/catalog/nodes/workload%3Amember-portal  
   **Requires Authentication:** false
6. **Action ID:** browse:stack:framework-flask  
   **Label:** Browse Flask  
   **Method:** GET  
   **Path:** /v1/catalog/nodes/stack%3Aframework-flask  
   **Requires Authentication:** false
7. **Action ID:** browse:pattern:multi-tenant-relational-data  
   **Label:** Browse Multi-tenant relational data  
   **Method:** GET  
   **Path:** /v1/catalog/nodes/pattern%3Amulti-tenant-relational-data  
   **Requires Authentication:** false
8. **Action ID:** browse:intent:deploy-web-app  
   **Label:** Browse Deploy web app  
   **Method:** GET  
   **Path:** /v1/catalog/nodes/intent%3Adeploy-web-app  
   **Requires Authentication:** false