# KnowledgeDocument

> The KnowledgeDocument object.

| Field | Type | Description |
|---|---|---|
| `created_at` | string (date-time) |  |
| `error` | string or null |  |
| `expires_at` | string (date-time) or null | When it stops being used, if it ever does. |
| `filename` | string |  |
| `id` | string (uuid) |  |
| `items` | integer | How many pieces of it agents can find. |
| `kind` | string | `file` for a file sent to it; `url` for a page of a website it read; `topic` and `faq` for what was written in the console. One of: `file`, `faq`, `topic`, `url`. New words may be added. |
| `knowledge_base_id` | string (uuid) |  |
| `object` | `knowledge_document` |  |
| `size_bytes` | integer |  |
| `source_url` | string or null | The page, for a source a website gave it. |
| `status` | string | `pending` until the indexer takes it, `processing` while it reads it, `indexed` once agents answer from it, `failed` when it could not — `error` says why — and `held` for a website page waiting for review in the console. One of: `pending`, `processing`, `indexed`, `failed`, `held`. New words may be added. |
| `updated_at` | string (date-time) |  |