> ## Documentation Index
> Fetch the complete documentation index at: https://braintrust.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# List environments

> List out all environments. The environments are sorted by creation date, with the most recently-created environments first.



## OpenAPI

````yaml /openapi.yaml get /environment
openapi: 3.1.1
info:
  version: 1.0.0
  title: Braintrust API
  description: >-
    API specification for the backend data server. The API is hosted globally at

    https://api.braintrust.dev or in your own environment.


    You can access the OpenAPI spec for this API at
    https://github.com/braintrustdata/braintrust-openapi.
  license:
    name: Apache 2.0
servers:
  - url: https://api.braintrust.dev
security:
  - bearerAuth: []
  - {}
paths:
  /environment:
    get:
      tags:
        - Environments
      summary: List environments
      description: >-
        List out all environments. The environments are sorted by creation date,
        with the most recently-created environments first.
      operationId: listEnvironments
      parameters:
        - schema:
            anyOf:
              - type: string
                format: uuid
              - type: array
                items:
                  type: string
                  format: uuid
                minItems: 1
            description: >-
              Filter by environment IDs. Supports a single ID or multiple
              values.
          required: false
          name: ids
          in: query
        - schema:
            type: string
          required: false
          name: name
          in: query
        - $ref: '#/components/parameters/OrgName'
      responses:
        '200':
          description: List of environments
          content:
            application/json:
              schema:
                type: object
                properties:
                  objects:
                    type: array
                    items:
                      $ref: '#/components/schemas/Environment'
                required:
                  - objects
        '400':
          description: >-
            The request was unacceptable, often due to missing a required
            parameter
          content:
            text/plain:
              schema:
                type: string
            application/json:
              schema:
                nullable: true
        '401':
          description: No valid API key provided
          content:
            text/plain:
              schema:
                type: string
            application/json:
              schema:
                nullable: true
        '403':
          description: The API key doesn’t have permissions to perform the request
          content:
            text/plain:
              schema:
                type: string
            application/json:
              schema:
                nullable: true
        '429':
          description: >-
            Too many requests hit the API too quickly. We recommend an
            exponential backoff of your requests
          headers:
            Retry-After:
              schema:
                type: string
          content:
            text/plain:
              schema:
                type: string
            application/json:
              schema:
                nullable: true
        '500':
          description: Something went wrong on Braintrust's end. (These are rare.)
          content:
            text/plain:
              schema:
                type: string
            application/json:
              schema:
                nullable: true
      security:
        - bearerAuth: []
        - {}
components:
  parameters:
    OrgName:
      schema:
        $ref: '#/components/schemas/OrgName'
      required: false
      description: Filter search results to within a particular organization
      name: org_name
      in: query
      allowReserved: true
  schemas:
    Environment:
      type: object
      properties:
        id:
          type: string
          format: uuid
          description: Unique identifier for the environment
        org_id:
          type: string
          format: uuid
          description: >-
            Unique identifier for the organization that the environment belongs
            under
        name:
          type: string
          description: Name of the environment
        slug:
          type: string
          description: >-
            A url-friendly, unique identifier for the environment within an
            organization
        description:
          type: string
          nullable: true
          description: Textual description of the environment
        created:
          type: string
          nullable: true
          format: date-time
          description: Date of environment creation
        deleted_at:
          type: string
          nullable: true
          format: date-time
          description: >-
            Date of environment deletion, or null if the environment is still
            active
      required:
        - id
        - org_id
        - name
        - slug
    OrgName:
      type: string
      description: Filter search results to within a particular organization
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API key or JWT
      description: >-
        Most Braintrust endpoints are authenticated by providing your API key as
        a header `Authorization: Bearer [api_key]` to your HTTP request. You can
        create an API key in the Braintrust [organization settings
        page](https://www.braintrustdata.com/app/settings?subroute=api-keys).

````