---
title: "Attach party to matter"
method: POST
path: "/matters/v1/{id}/parties"
tags: ["Matters"]
---

# Attach party to matter

`POST /matters/v1/{id}/parties`

Attach a reusable party to a matter with a matter-specific role.

## Path parameters

- `id` string, required

## Request body

- object
  - `party_id` string, required
  - `role` 'client' | 'prospect' | 'opposing_party' | 'opposing_counsel' | 'co_counsel' | 'judge' | 'expert' | 'witness' | 'vendor' | 'insurer' | 'other', required
  - `is_primary` boolean
  - `notes` string, nullable
  - `metadata` object
  - `custom_fields` object, nullable
  - `set_as_client` boolean

## Response `201`

Matter party attached

---

[API](https://skmtc.net/casemark/apis/case-dev-api.md) · [All operations](https://skmtc.net/casemark/apis/case-dev-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/casemark/case-dev-api/revisions/5b7e64e6d6f9/schema)