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# List FeatureLibraryItem items

GET https://{tenant_name}.benchling.com/api/v3/feature-library-item/items

List FeatureLibraryItem items.

Reference: https://docs.benchling.com/docs/api/benchling-api/feature-library-item/list

## Authentication

- `Authorization` header (bearer token, required) — Bearer authentication of the form `Bearer <token>`, where token is your auth token.

## Request

### Query parameters

- `createdAt.gt` (string, optional) — Datetime, in RFC 3339 format. Time zone defaults to UTC. Restricts results to those created after the specified time. e.g. > 2017-04-30.
- `createdAt.gte` (string, optional) — Datetime, in RFC 3339 format. Time zone defaults to UTC. Restricts results to those created at or after the specified time. e.g. >= 2017-04-30.
- `createdAt.lt` (string, optional) — Datetime, in RFC 3339 format. Time zone defaults to UTC. Restricts results to those created before the specified time. e.g. \< 2017-04-30.
- `createdAt.lte` (string, optional) — Datetime, in RFC 3339 format. Time zone defaults to UTC. Restricts results to those created at or before the specified time. e.g. \<= 2017-04-30.
- `featureLibrary.eq` (string, optional) — ID of a Feature Library.
- `id.anyOf` (string, optional) — Restricts results to those matching any of the specified IDs. Comma-separated list.
- `modifiedAt.gt` (string, optional) — Datetime, in RFC 3339 format. Time zone defaults to UTC. Restricts results to those modified after the specified time. e.g. > 2017-04-30.
- `modifiedAt.gte` (string, optional) — Datetime, in RFC 3339 format. Time zone defaults to UTC. Restricts results to those modified at or after the specified time. e.g. >= 2017-04-30.
- `modifiedAt.lt` (string, optional) — Datetime, in RFC 3339 format. Time zone defaults to UTC. Restricts results to those modified before the specified time. e.g. \< 2017-04-30.
- `modifiedAt.lte` (string, optional) — Datetime, in RFC 3339 format. Time zone defaults to UTC. Restricts results to those modified at or before the specified time. e.g. \<= 2017-04-30.
- `nextToken` (string, optional) — Token for pagination
- `omit` (string, optional) — Comma-separated list of top-level fields to omit from each returned item. Cannot overlap with returning.
- `pageSize` (integer, optional) — Number of results to return. Defaults to 50, maximum of 100.
- `returning` (string, optional) — Comma-separated list of top-level fields to include in each returned item. Cannot overlap with omit.
- `sort` (enum, optional, default: modifiedAt:desc) — Method by which to order results. Valid sorts are: createdAt (created time, oldest first) and modifiedAt (modified time, oldest first). Use :asc or :desc to specify ascending or descending order. Default is modifiedAt:desc.
  - Allowed values: `createdAt:asc`, `createdAt:desc`, `modifiedAt:asc`, `modifiedAt:desc`

## Response

### 200

OK

- `items` (list of FeatureLibraryItem, optional)
- `nextToken` (string, optional)

## Errors

### 400 Feature Library Item List Request Bad Request Error

Bad Request

- `detail` (GeneralErrorDetail, required, nullable)
- `instance` (string, required)
- `status` (integer, required)
- `title` (string, required, nullable)
- `type` (string, required)
- `invalidId` (string, optional)

### 403 Feature Library Item List Request Forbidden Error

Forbidden

- `detail` (GeneralErrorDetail, required, nullable)
- `instance` (string, required)
- `status` (integer, required)
- `title` (string, required, nullable)
- `type` (string, required)
- `invalidId` (string, optional)

### 404 Feature Library Item List Request Not Found Error

Not Found

- `detail` (GeneralErrorDetail, required, nullable)
- `instance` (string, required)
- `status` (integer, required)
- `title` (string, required, nullable)
- `type` (string, required)
- `invalidId` (string, optional)

### 429 Feature Library Item List Request Too Many Requests Error

Too Many Requests

- `detail` (TooManyRequestsErrorBodyDetail, required, nullable)
- `instance` (string, required)
- `status` (integer, required)
- `title` (string, required, nullable)
- `type` (string, required)
- `invalidId` (string, optional)

### 500 Feature Library Item List Request Internal Server Error

Internal Server Error

- `detail` (InternalServerErrorBodyDetail, required, nullable)
- `instance` (string, required)
- `status` (integer, required)
- `title` (string, required, nullable)
- `type` (string, required)
- `errorId` (string, optional)

## Types

### FeatureLibraryItem

Represents a single feature definition within a FeatureLibrary used for auto-annotation. Each item defines a searchable pattern (nucleotide or amino acid sequence), a feature type classification (such as 'gene', 'promoter', or 'domain'), a display name, and a color for visualization. When auto-annotate runs against a sequence, the pattern is matched according to the matchType (see FeatureLibraryMatchType), and matching regions are annotated with the item's name, type, and color. Patterns can include special characters for flexible matching, such as wildcards for arbitrary bases or optional flanking regions.

- `__typename` (string, optional)
- `color` (string, optional) — The color of the annotations generated by the Feature Library Item. Must be a valid hex string
- `createdAt` (string, optional) — DateTime the Feature Library Item was created
- `featureLibrary` (FeatureLibraryRef, optional) — The Feature Library the Feature Library Item belongs to
- `featureType` (string, optional, nullable) — The type of the Feature Library Item, like gene, promoter, etc. Note: This is an arbitrary string, not an enum
- `id` (string, optional)
- `matchType` (enum, optional) — The match type of the Feature Library Item. Used to determine how auto-annotate matches are made
  - Allowed values: `NUCLEOTIDE`, `AA_SEQUENCE`
- `modifiedAt` (string, optional) — DateTime the Feature Library Item was last modified
- `name` (string, optional) — The name of the Feature Library Item
- `pattern` (string, optional) — The pattern used for matching during auto-annotation

### GeneralErrorDetail

### TooManyRequestsErrorBodyDetail

### InternalServerErrorBodyDetail

### FeatureLibraryRef

- `__typename` (string, optional)
- `id` (string, optional)

## Examples

**Response**

```json
{
  "items": [
    {
      "__typename": "__typename",
      "color": "color",
      "createdAt": "createdAt",
      "featureType": "featureType",
      "id": "id",
      "matchType": "NUCLEOTIDE",
      "modifiedAt": "modifiedAt",
      "name": "name",
      "pattern": "pattern"
    }
  ],
  "nextToken": "nextToken"
}
```

**SDK Code**

```python
import requests

url = "https://{tenant_name}.benchling.com/api/v3/feature-library-item/items"

headers = {"Authorization": "Bearer <token>"}

response = requests.get(url, headers=headers)

print(response.json())
```

```javascript
const url = 'https://{tenant_name}.benchling.com/api/v3/feature-library-item/items';
const options = {method: 'GET', headers: {Authorization: 'Bearer <token>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```