---
title: "Retrieve a merge base"
method: GET
path: "/api/v4/projects/{id}/repository/merge_base"
tags: ["repositories"]
---

# Retrieve a merge base

`GET /api/v4/projects/{id}/repository/merge_base`

## Request

- Base URL: `https://gitlab.com`
- URL: `https://gitlab.com/api/v4/projects/{id}/repository/merge_base`
- Auth: none declared

Retrieves the merge base for two specified commits.

## Path parameters

- `id` string, required

## Query parameters

- `refs` string[], required

## Response `200`

Retrieve a merge base

- APIEntitiesCommit: API_Entities_Commit model
  - `id` string, required
  - `short_id` string, required
  - `created_at` string, date-time, required
  - `parent_ids` string[], required
  - `title` string, required
  - `message` string, required
  - `author_name` string, required
  - `author_email` string, required
  - `authored_date` string, date-time, required
  - `committer_name` string, required
  - `committer_email` string, required
  - `committed_date` string, date-time, required
  - `trailers` object, required
  - `extended_trailers` object, required
  - `web_url` string, required

---

[API](https://skmtc.dev/gitlab/apis/gitlab-api.md) - [All operations](https://skmtc.dev/gitlab/apis/gitlab-api/llms.txt) - [OpenAPI document](https://skmtc.dev/gitlab/apis/gitlab-api/revisions/b234947ef3f2?raw)