---
title: "Add or remove members from a list. For contact lists: pass contact_ids or linkedin_urls. For company lists (kind='compan"
method: POST
path: "/api/v1/lists/{list_id}/members"
tags: ["lists"]
---

# Add or remove members from a list. For contact lists: pass contact_ids or linkedin_urls. For company lists (kind='compan

`POST /api/v1/lists/{list_id}/members`

## Request

- Base URL: `https://crispy.sh`
- URL: `https://crispy.sh/api/v1/lists/{list_id}/members`
- Auth: HTTP bearer

## Path parameters

- `list_id` string, required

## Request body

- object
  - `contact_ids` string[]: Contact UUIDs to add or remove (contact lists only)
  - `linkedin_urls` string[]: LinkedIn URLs - resolved to existing contacts in your CRM (contact lists only)
  - `company_ids` string[]: Company UUIDs to add or remove (kind='companies' lists only)
  - `linkedin_company_ids` string[]: LinkedIn company IDs to resolve and add or remove (kind='companies' lists only)
  - `lookup_items` object[]: Array of structured contact identifiers. Alternative to contact_ids/linkedin_urls. Each item accepts any identifier the caller has.
    - `crispy_id` string: Crispy contact UUID (cnt_ prefixed or raw UUID)
    - `linkedin_provider_id` string: LinkedIn provider ID (ACoAA... or ACwA... variant)
    - `linkedin_url` string: LinkedIn URL or slug (e.g. 'john-doe' or full https URL)
    - `email` string: Email address (lowercased before resolution)
    - `external_id` string: Namespaced external ID (e.g. HubSpot contact ID). Requires external_id_namespace.
    - `external_id_namespace` string: Namespace for external_id (e.g. 'hubspot', 'salesforce', 'clay')

## Response `200`

Success

## Other responses

- `401`: Missing or expired API key
- `403`: Insufficient key scope or permission denied
- `429`: Rate limit exceeded

---

[API](https://skmtc.dev/crispy/apis/crispy-rest-api.md) · [All operations](https://skmtc.dev/crispy/apis/crispy-rest-api/llms.txt) · [OpenAPI document](https://skmtc.dev/crispy/apis/crispy-rest-api/revisions/6bed0974d9ce?raw)