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

# Add or refresh a Contact List membership

> Creates the List implicitly when its first Contact is added. Re-adding a Contact refreshes one normalized membership timestamp.



## OpenAPI

````yaml post /api/v2/contact/list/{listName}
openapi: 3.0.0
info:
  version: 2.0.0
  title: Vida API
  description: Vida API Documentation
servers:
  - url: https://api.vida.dev
    description: Vida Production
    variables:
      baseUrl:
        default: api.vida.dev
        description: Production API Root
security: []
tags:
  - name: Agents
  - name: Inbound Email
    description: Control which senders may create inbound email work for an Agent.
  - name: Features
    description: Inspect capabilities available within an account hierarchy.
  - name: Conversation Logs
    description: Query conversation activity and calculate account-level metrics.
  - name: Computer Agents
    description: Set up, configure, inspect, and manage Vida Computer Agents.
  - name: Computer Agent Sessions
    description: View and reset Computer Agent sessions.
  - name: Accounts
  - name: Agent Templates
    description: Create, manage, and apply reusable Agent configurations.
paths:
  /api/v2/contact/list/{listName}:
    post:
      tags:
        - Contacts
      summary: Add or refresh a Contact List membership
      description: >-
        Creates the List implicitly when its first Contact is added. Re-adding a
        Contact refreshes one normalized membership timestamp.
      parameters:
        - name: listName
          in: path
          required: true
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - id
              properties:
                id:
                  type: string
                  description: Contact id.
                score:
                  type: integer
                  description: Optional membership timestamp.
      responses:
        default:
          description: ''
      security:
        - apiKeyAuth: []
components:
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: query
      name: token
      description: Vida API Token

````