Construction contractors: vendor portal using Next.js

Summary

A vendor portal blueprint for construction contractors built with Next.js on Ample. Domain schema:

• Listings (reference, project_type, location, publishing_status, agency_id): showcase projects with publishing status;
• Agencies (name, license_number, service_region): branches or divisions;
• Vendors (name, trade, agency_id, prequalified): subcontractors and suppliers per branch;
• Reports (agency_id, period, object_key, generated_at): branch progress reports;
• Document_access (document_id, principal_reference, role, granted_at): who may read which document.
  Public information: published project showcases, services and regions, licenses and insurance summary.

Technical Basis

The technical basis verified on Next.js: a role-to-document access model with negative tests (401 without identity, 403 for the wrong role) and a private-bucket round-trip for the allowed role (private=ok).

Representative Queries

• Construction contractors: vendor portal using Next.js
• Where can I host Construction contractors: Vendor portal built with Next.js?
• I need a genuinely specialized vendor portal workflow covering project/vendor relationships, job progress and project reporting.

Resource Requirements

• primitive:compute
• primitive:postgres
• primitive:s3-compatible-object-storage

Infrastructure Requirements

• Compute: Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.
• Postgres: 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: Buckets are S3-compatible with issued credentials; PutObject and GetObject are verified by canary. Other S3 operations are not verified.

Prerequisites

• A Next.js project (next build then next start -H 0.0.0.0 -p $PORT on the node-22 template)
• A PostgreSQL driver reading DATABASE_URL (auto-provisioned when omitted)
• Bucket credentials from ample bucket create passed as encrypted S3_* environment variables
• A review of which construction contractors data classes may be handled at all; this blueprint models public information only

Workflow Steps

1. Model the construction contractors domain
   Create the tables listings, agencies, vendors, reports, document_access. Showcase projects with publishing status lives in listings; keep the sensitive classes (site safety incidents, bid pricing, client contracts) out of this schema.
2. Model vendors scoped to the agency with roles
3. Authorize document access by vendor and role (401, 403 negative tests)
4. Store vendor documents in the private bucket
5. Deploy: Run the synchronous deploy once and read the result. Re-running with no change is a no-op.
6. Verify: Run the pattern self-test(s) from the example (/p/private-document-library) and your own acceptance checks for the construction contractors workflow.

Cost Estimate

• Currency: USD
• Monthly Amount: 10.0
• 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.

Limitations

• The technical basis (private document library on Next.js) was verified with the pattern fixture; the construction contractors schema and workflow are an original design for this blueprint and were not executed as a separate application.
• No health, financial, privacy, or other compliance claim is made. Safety and bid data are confidential; only published showcases and branch reporting are modeled.
• Public content and synthetic examples only until actual data-handling requirements have been reviewed.
• Verified on the node-22 template at s-1vcpu-1gb; region, request-duration limits, and other sizes are unknown or unverified.

Next Actions

• Browse the catalog index: GET /v1/catalog
• Search published recipes by intent, stack and constraints: POST /v1/catalog/search
• Prepare a side-effect-free deployment plan for an authorized project: POST /v1/catalog/plan
• Read the existing agent authentication setup: GET /mcp/setup
• Browse Construction contractors: GET /v1/catalog/nodes/industry%3Aconstruction-contractors
• Browse Vendor portal: GET /v1/catalog/nodes/workload%3Avendor-portal
• Browse Next.js: GET /v1/catalog/nodes/stack%3Aframework-next-js
• Browse Deploy web app: GET /v1/catalog/nodes/intent%3Adeploy-web-app

References

• Verified Next.js private document library