---
title: "Enroll a contact in a campaign (e.g. 'gtm-engineers-apr26'). Returns a complete verdict on every call: added, already en"
method: POST
path: "/api/v1/campaigns/{campaign}/leads"
tags: ["leads"]
---

# Enroll a contact in a campaign (e.g. 'gtm-engineers-apr26'). Returns a complete verdict on every call: added, already en

`POST /api/v1/campaigns/{campaign}/leads`

## Request

- Base URL: `https://crispy.sh`
- URL: `https://crispy.sh/api/v1/campaigns/{campaign}/leads`
- Auth: HTTP bearer

## Path parameters

- `campaign` string, required

## 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')
  - `first_name` string: First name (written on create if contact is new)
  - `last_name` string: Last name
  - `email` string: Email address
  - `company` string: Company name
  - `title` string: Job title
  - `linkedin_url` string: [Deprecated: use lookup.linkedin_url]

## 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)