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

# List a project's A/B variants

> The A/B variant keys this project declares. A variant replaces the settings it declares — prompt, model, whatever it overrides — for a single run, which is how one configuration is compared against another without editing the project. Send one of these as `abKey` to runPlayground; a key that is not listed here is refused there rather than silently ignored. Most projects declare none and this answers an empty list.



## OpenAPI

````yaml /api-reference/specs/claudia/v1.json get /v1/projects/{project}/ab-keys
openapi: 3.0.1
info:
  title: Claudia API
  version: 1.0.0
servers:
  - url: https://api.cloudhumans.com/claudia
    description: Production
  - url: https://api.cloudhumans.com/claudia/staging
    description: Staging
security:
  - bearerAuth: []
tags:
  - name: MCP Servers
    description: >-
      The MCP servers your agents can call tools on. Registering one here is
      what makes its tools selectable in an agent; the credentials it needs are
      stored encrypted and never read back.
  - name: Knowledge Base Content
    description: Read, search and edit the content that answers your customers.
  - name: Content Quality
    description: Rewrites proposed for content that is answering your customers badly.
  - name: Playground
    description: >-
      Talk to one of your agents as if you were a customer, without touching a
      real conversation.
  - name: Project Settings
    description: >-
      Read and change how a ClaudIA project behaves — the settings screens of
      the ClaudIA app, as an API.
  - name: Content Improvements
    description: Answers Claudia proposes for questions your content does not cover yet.
  - name: Knowledge Bases
    description: The knowledge bases your account can manage.
  - name: Content Sources
    description: The sites Claudia crawls to keep a knowledge base in sync.
paths:
  /v1/projects/{project}/ab-keys:
    get:
      tags:
        - Project Settings
      summary: List a project's A/B variants
      description: >-
        The A/B variant keys this project declares. A variant replaces the
        settings it declares — prompt, model, whatever it overrides — for a
        single run, which is how one configuration is compared against another
        without editing the project. Send one of these as `abKey` to
        runPlayground; a key that is not listed here is refused there rather
        than silently ignored. Most projects declare none and this answers an
        empty list.
      operationId: listProjectAbKeys
      parameters:
        - name: project
          in: path
          description: >-
            The ClaudIA project to act on, by name. Get the names from
            listMyClaudiaProjects, which lists every project these credentials
            reach — a project they do not reach answers 404, indistinguishable
            from one that does not exist. Never guess a project name.
          required: true
          schema:
            type: string
      responses:
        '200':
          description: The variants this project declares.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ProjectAbKeys'
        '401':
          description: Missing, expired or invalid credentials.
        '403':
          description: The credentials hold no account allowed to manage this content.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '404':
          description: Not a project these credentials reach.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
        '429':
          description: Rate limit applied by the API gateway. Back off and retry.
components:
  schemas:
    ProjectAbKeys:
      required:
        - abKeys
      type: object
      properties:
        abKeys:
          type: array
          description: >-
            Keys accepted as `abKey` by runPlayground. Empty when the project
            declares no variants, which is the normal case.
          items:
            type: string
      description: The A/B variants a project declares.
    Error:
      required:
        - error
      type: object
      properties:
        error:
          type: string
          description: What went wrong.
          example: 'Forbidden: token holds no claim for the requested account'
      description: Something the caller needs to fix.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT

````