---
title: "[Deprecated: use blacklist_contact_or_company.] Set a CRM contact or company blacklist flag. Company scope does NOT bloc"
method: POST
path: "/api/v1/blocklist/contacts"
tags: ["block-list"]
---

# \[Deprecated: use blacklist_contact_or_company.\] Set a CRM contact or company blacklist flag. Company scope does NOT bloc

`POST /api/v1/blocklist/contacts`

## Request

- Base URL: `https://crispy.sh`
- URL: `https://crispy.sh/api/v1/blocklist/contacts`
- Auth: HTTP bearer

## Request body

- object
  - `lookup` object: Structured contact identifier. Resolver picks the highest-priority field per RESOLVER-09 (crispy_id > linkedin_provider_id > external_id > linkedin_url > email).
    - `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')
  - `linkedin_company_id` string: LinkedIn company ID (required for scope=company).
  - `reason` string: Optional reason for blocklisting.

## 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)