# Doc Entities
## Master Doc Entities Table
| `api/` | Library API surface — client methods, wire types, environment trait | [api/readme.md](api/readme.md) | 2 |
| `feature/` | Optional feature specifications — streaming, sync wrapper | [feature/readme.md](feature/readme.md) | 2 |
| `invariant/` | Correctness properties that must always hold | [invariant/readme.md](invariant/readme.md) | 2 |
| `pattern/` | Structural design patterns in the codebase | [pattern/readme.md](pattern/readme.md) | 1 |
## Master Doc Instances Table
| api | 001 | Endpoint Coverage | [api/001_endpoint_coverage.md](api/001_endpoint_coverage.md) |
| api | 002 | Chat Completion | [api/002_chat_completion.md](api/002_chat_completion.md) |
| feature | 001 | Streaming | [feature/001_streaming.md](feature/001_streaming.md) |
| feature | 002 | Sync API | [feature/002_sync_api.md](feature/002_sync_api.md) |
| invariant | 001 | Thin Client Principle | [invariant/001_thin_client_principle.md](invariant/001_thin_client_principle.md) |
| invariant | 002 | Testing Standards | [invariant/002_testing_standards.md](invariant/002_testing_standards.md) |
| pattern | 001 | Module Organization | [pattern/001_module_organization.md](pattern/001_module_organization.md) |