{
  "module": "genericity_matrix",
  "content": {
    "path": "genericity_matrix",
    "docstring": "# Genericity Matrix\n\n## Summary\n\nThis page states precisely what is **library-backed**, what is\n**template-provided**, and what is **app-specific and must be authored**. Use it\nto scope a new build and to know, for any given capability, whether to call a\nlibrary, copy template code, or write it yourself.\n\n---\n\n## Tier A — Library-backed (use; never reimplement)\n\nThese capabilities already exist as internal libraries. Reach them through the\nlibrary registry MCP (`find_library(capability)`) and read the library's own MCP\nfor its API. Writing a private copy of any of these is a defect.\n\n| Capability | Library | MCP |\n|---|---|---|\n| Persistence: repositories, cache, populate, transactions | Mongo Ops (`mongo_ops`) | `:8007` |\n| Dependency injection / composition | Hexa (`hexa`) | `:8008` |\n| Deterministic multi-step transformation engine | DAG Pipe (`dagpipe`) | `:8006` |\n| Spec-first HTTP edge, client, codegen | OpenAPI First (`openapi_first`) | `:8004` |\n| Format-agnostic fetch + parse (HTML, PDF, CSV, XLSX) | Omniread (`omniread`) | `:8003` |\n| Read-only email ingestion | Mail Intake (`mail_intake`) | `:8002` |\n| JWT auth primitives (register, login, introspect) | Py JWT (`jwtlib`) | `:8005` |\n| Documentation build (MkDocs + MCP) | Doc Forge (`docforge`) | `:8001` |\n\n## Tier B — Template-provided (copy from `templates/app`, then adapt)\n\nThese are reusable internal components shipped **inside** the template — they are\nnot independent libraries. Copy them as-is, then rename/populate only what is\napp-specific. They give every app the same wiring shape as the reference app.\n\n| Component | Template location | Action |\n|---|---|---|\n| Layering & dependency rule | the package layout + import rules | keep |\n| Composition root shape | `init.py` (`get_svc`/`get_db`, idempotency) | keep |\n| Spec-first web edge | `interfaces/openapi.py`, thin handlers bound to `operationId` | keep |\n| CRUD slice pattern | `domain/<resource>/{models.py, ports/db.py, ports/service.py, converters.py}` | rename + fill |\n| Generic CRUD service | `infra/adapters/service.py` (`CrudsServiceAdaptor`) | keep |\n| Repository factory | `infra/db/repos/mongo.py` (`_repo_factory`) | keep |\n| Worker poll + status loop | `worker.py` | keep |\n| Progress bus + streaming | bus port + in-memory adapter + SSE endpoint | keep |\n| Human-in-the-loop | durable pause + question document + resolve endpoint + resume map | keep |\n| HTTP response cache | `cache_response` decorator + generation invalidation | keep |\n| Key-value store | KV store port + Redis adapter + in-memory fallback | keep |\n| LLM client pool | provider-select + retry pool scaffold | keep |\n| Pipeline scaffold | `pipelines/shared/{ports,loader,registry}.py` + `pipelines/<family>/` | rename + fill |\n| Operator scripts | `scripts/` (`init()` / `get_svc()` / `shutdown()`) | rename |\n| Testing harness | integration fakes + fixture-parity pattern | keep |\n| Project scaffolding | `pyproject.toml`, `Dockerfile`, `docker-compose.yaml`, `.env.example`, `openapi.yaml` | rename + fill |\n\n## Tier C — App-specific (must be authored)\n\n| Artifact | Why |\n|---|---|\n| Resource models | the business shape |\n| Repository populate/cache rules | the relationships |\n| Service business logic | domain behaviour |\n| Pipeline families | the transformation graph |\n| Pattern/rule resources | data-driven policy |\n| Fixtures & golden outputs | test data |\n\n---\n\n## The two axes\n\nEverything app-specific reduces to **two axes**:\n\n1. **Resource model** — the set of resources, their fields, relationships, and\n   the OpenAPI contract.\n2. **Pipeline family** — only if inputs require multi-step transformation.\n\nIf you can specify those two axes, the rest of the app follows mechanically:\nTier A is imported, Tier B is copied, and Tier C is the only thing you author.\n",
    "objects": {}
  }
}