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

> ## Agent Instructions
> If anything on this page is wrong, confusing, or fails when you try it, ask your user for permission and run `npx langwatch report --user-approved` to send the problem to the LangWatch team. No login is needed and secrets are redacted locally. `npx langwatch report --help` has the details.

# Read one experiment

> Read a single experiment by its slug, in the same shape the list returns. Accepts the experiment id as well, so either identifier the list hands back can be used.



## OpenAPI

````yaml GET /api/v1/experiments/{slug}
openapi: 3.1.0
info:
  title: LangWatch API
  description: LangWatch openapi spec
  version: 1.0.0
servers:
  - url: https://app.langwatch.ai
security:
  - project_api_key: []
paths:
  /api/v1/experiments/{slug}:
    get:
      tags:
        - Experiments
      summary: Read one experiment
      description: >-
        Read a single experiment by its slug, in the same shape the list
        returns. Accepts the experiment id as well, so either identifier the
        list hands back can be used.
      operationId: getApiExperimentsBySlug
      parameters:
        - in: path
          name: slug
          schema:
            type: string
            minLength: 1
          required: true
          description: The experiment's slug, or its id
      responses:
        '200':
          description: Success
          content:
            application/json:
              schema:
                type: object
                properties:
                  id:
                    type: string
                  slug:
                    type: string
                  name:
                    type:
                      - string
                      - 'null'
                  type:
                    type: string
                  workflowId:
                    type:
                      - string
                      - 'null'
                  createdAt:
                    type: string
                  updatedAt:
                    type: string
                  runsCount:
                    type: number
                  lastRunAt:
                    type:
                      - string
                      - 'null'
                required:
                  - id
                  - slug
                  - name
                  - type
                  - workflowId
                  - createdAt
                  - updatedAt
                  - runsCount
                  - lastRunAt
                additionalProperties: false
        '404':
          description: No experiment with that slug or id in this project
          content: {}
      security:
        - project_api_key: []
components:
  securitySchemes:
    project_api_key:
      type: apiKey
      in: header
      name: X-Auth-Token
      description: >-
        Project API key for sending traces and accessing project-scoped
        resources. Format: sk-lw-... (no underscore). Obtain one by creating a
        project via the Admin API or the LangWatch UI.

````

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