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# API Reference — Implementing Input Validation

## Tools

### Validation

| Command | Description |
|---|---|
| `pydantic BaseModel` | Type-safe |
| `marshmallow Schema` | Serialization |
| `agent.js audit` | Gap analysis |
| `agent.js validate` | Check |

### Agent Script

```bash
node agent.js validate --file <value>
node agent.js audit --directory <value> --check <value>
node agent.js generate --type <value> --constraints <value>
node agent.js report --directory <value>
```
