# Get a pull request's changes

> What a pull request changes: the files it touches and their line-by-line diff against the commit it started from.

<div class="g1t-endpoint"><span class="g1t-method" data-method="get">GET</span><code>/repos/{owner}/{name}/pulls/{number}/changes</code></div>

Use it to review a pull request or to compare several made for the same issue.

A file's `status` is `added`, `modified` or `deleted`. A binary file has no `hunks`. In a line, `old` is `null` when it was added and `new` is `null` when it was deleted.

- **Authentication:** Optional. Public data can be read without a token; send one to see what is private.
- **MCP tool:** [`pull_request`](/reference/mcp/#pull_request) with `action` `changes`, and the same inputs
- **Scope:** An access token needs [`pull_requests:read`](/guides/authentication/#scopes).

## Path parameters

| Name | Type | Required | Description |
| --- | --- | --- | --- |
| `owner` | string | Yes | The workspace that owns the repository. |
| `name` | string | Yes | The repository's name. |
| `number` | integer | Yes | The number shown after the #. Issues and pull requests share one sequence. |

## Example request

```sh
curl https://api.g1t.sh/repos/flagon-io/hello/pulls/14/changes \
  -H "Authorization: Bearer $G1T_TOKEN"
```

## Example response

A successful request answers `200` with:

```json
{
  "base": "3a7e9c1b5d2f4a6c8e0b2d4f6a8c0e2b4d6f8a1c",
  "head": "9f2c4e1a7b3d5f60812a4c6e8b0d2f4a6c8e0b13",
  "files": [
    {
      "path": "src/main.rs",
      "status": "modified",
      "additions": 1,
      "deletions": 1,
      "binary": false,
      "hunks": [
        {
          "lines": [
            {
              "kind": "context",
              "old": 3,
              "new": 3,
              "text": "fn main() {"
            },
            {
              "kind": "delete",
              "old": 4,
              "new": null,
              "text": "    println!(\"Hello, world!\");"
            },
            {
              "kind": "add",
              "old": null,
              "new": 4,
              "text": "    println!(\"Hello, {}!\", std::env::args().nth(1).unwrap_or(\"world\".into()));"
            },
            {
              "kind": "context",
              "old": 5,
              "new": 5,
              "text": "}"
            }
          ]
        }
      ]
    }
  ],
  "truncated": false
}
```

## Errors

A failed request answers with one of these statuses and a body like `{"error": {"code": "not_found", "message": "Repository not found."}}`. See [errors](/reference/api/#errors).

| Status | Code | When |
| --- | --- | --- |
| 401 | `unauthenticated` | A token is required, or the one sent is not valid. |
| 403 | `forbidden` | The token is valid but not allowed to do this, such as a member-only change or an agent token outside its repository. |
| 404 | `not_found` | It does not exist, or you cannot see it. |
| 422 | `invalid` | The input is not valid. `message` says which field and why. |