---
title: "Get LibraryParameterDefinition by ID"
method: GET
path: "/api/v3/library-parameter-definition/{library_parameter_definition_id}"
tags: ["Library Parameter Definition"]
---

# Get LibraryParameterDefinition by ID

`GET /api/v3/library-parameter-definition/{library_parameter_definition_id}`

## Request

- Base URL: `https://{tenant_name}.benchling.com`
- URL: `https://{tenant_name}.benchling.com/api/v3/library-parameter-definition/{library_parameter_definition_id}`
- Auth: HTTP bearer

Get a single LibraryParameterDefinition by ID.

## Path parameters

- `library_parameter_definition_id` string, required

## Query parameters

- `returning` string[]
- `omit` string[]

## Headers

- `EARLY-ACCESS` string

## Response `200`

OK

- LibraryParameterDefinition: A reusable parameter definition stored in the Parameter Library. LibraryParameterDefinitions allow organizations to standardize parameters used across multiple procedures by defining a name, description, data type, and optional unit type. When creating procedure parameters, users can link to a library parameter definition to inherit its settings, ensuring consistency across experiments.
  - `__typename` string
  - `archiveReason` string, nullable
  - `archived` boolean
  - `createdAt` string, datetime
  - `creator` PrincipalRef
    - `__typename` string
    - `id` string, api_id
  - `dataType` 'AA_PART_LINK' | 'AA_SEQUENCE_LINK' | 'ASSAY_REQUEST_LINK' | 'ASSAY_RESULT_LINK' | 'ASSAY_RUN_LINK' | 'BATCH_LINK' | 'BLOB_LINK' | 'BOOLEAN' | 'CUSTOM_ENTITY_LINK' | 'DATE' | 'DATETIME' | 'DNA_SEQUENCE_LINK' | 'ENTITY_LINK' | 'ENTRY_LINK' | 'FLOAT' | 'INTEGER' | 'JSON' | 'LONG_TEXT' | 'MIXTURE_LINK' | 'MOLECULE_LINK' | 'BASE_MOLECULE_LINK' | 'PART_LINK' | 'RNA_PART_LINK' | 'RNA_SEQUENCE_LINK' | 'SAMPLE_LINK' | 'DROPDOWN' | 'STORAGE_LINK' | 'TEXT' | 'TRANSCRIPTION_LINK' | 'TRANSLATION_LINK'
  - `description` string
  - `id` string
  - `modifiedAt` string, datetime
  - `name` string
  - `unitType` UnitTypeRef
    - `__typename` string
    - `id` string, api_id

## Other responses

- `400`: Bad Request
- `403`: Forbidden
- `404`: Not Found
- `429`: Too Many Requests
- `500`: Internal Server Error

---

[API](https://skmtc.dev/benchling/apis/benchling-api.md) - [All operations](https://skmtc.dev/benchling/apis/benchling-api/llms.txt) - [OpenAPI document](https://skmtc.dev/benchling/apis/benchling-api/revisions/c9f087b98b8b?raw)