curl -X GET 'https://api.github.com/repos/example-owner/example-repo/dependency-graph/compare/example-basehead?name=example-name' \
  -H "Authorization: Bearer $GITHUB_TOKEN" \
  -H 'Accept: application/vnd.github+json' \
  -H 'X-GitHub-Api-Version: 2026-03-10'

# GET /repos/{owner}/{repo}/dependency-graph/compare/{basehead} (GitHub API)
Base URL: https://api.github.com
Auth: Authorization; GitHub token; required.
Last verified: 2026-10-20

> Get a diff of the dependencies between commits

## Critical Gotchas
* GitHub recommends an `Accept: application/vnd.github+json` header and an explicit `X-GitHub-Api-Version` header.
* Fine-grained tokens only authorize repositories and permissions selected when the token is created.

## cURL
curl -X GET 'https://api.github.com/repos/example-owner/example-repo/dependency-graph/compare/example-basehead?name=example-name' \
  -H "Authorization: Bearer $GITHUB_TOKEN" \
  -H 'Accept: application/vnd.github+json' \
  -H 'X-GitHub-Api-Version: 2026-03-10'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| owner | path | string | Yes | The account owner of the repository. The name is not case sensitive. |
| repo | path | string | Yes | The name of the repository without the `.git` extension. The name is not case... |
| basehead | path | string | Yes | The base and head Git revisions to compare. The Git revisions will be resolve... |
| name | query | string | No | The full path, relative to the repository root, of the dependency manifest file. |

## Response example
[{"change_type":"added","manifest":"path/to/package-lock.json"}]

---
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GET

GET /repos/{owner}/{repo}/dependency-graph/compare/{basehead} — GitHub API

GitHub token (required); https://api.github.com

GitHub API

Get a diff of the dependencies between commits

Base URL: https://api.github.com
Auth: Authorization: Bearer <GITHUB_API_KEY>
Last verified: 2026-10-20 · upstream hash matched

Actions Try in browser→

Agents: curl -H "Accept: text/markdown" this URL
→ 264 tokens · Vary: Accept

Critical gotchas

GitHub recommends an Accept: application/vnd.github+json header and an explicit X-GitHub-Api-Version header.

Fine-grained tokens only authorize repositories and permissions selected when the token is created.

cURL

curl -X GET 'https://api.github.com/repos/example-owner/example-repo/dependency-graph/compare/example-basehead?name=example-name' \  -H "Authorization: Bearer $GITHUB_TOKEN" \  -H 'Accept: application/vnd.github+json' \  -H 'X-GitHub-Api-Version: 2026-03-10'

Parameters

Name	In	Type	Required	Description
owner	path	string	Yes	The account owner of the repository. The name is not case sensitive.
repo	path	string	Yes	The name of the repository without the `.git` extension. The name is not case sensitive.
basehead	path	string	Yes	The base and head Git revisions to compare. The Git revisions will be resolved to commit SHAs. Named revisions will be resolved to their corresponding HEAD commits, and an appropriate merge base will be determined. This parameter expects the format `{base}...{head}`.
name	query	string	No	The full path, relative to the repository root, of the dependency manifest file.

Response 200 OK

[
  {
    "change_type": "added",
    "manifest": "path/to/package-lock.json",
    "ecosystem": "npm",
    "name": "@actions/core",
    "version": "1.0.0",
    "package_url": "pkg:/npm/%40actions/[email protected]",
    "license": "MIT",
    "source_repository_url": "https://github.com/github/actions",
    "vulnerabilities": [
      {
        "severity": "critical",
        "advisory_ghsa_id": "GHSA-rf4j-j272-fj86",
        "advisory_summary": "A summary of the advisory.",
        "advisory_url": "https://github.com/advisories/GHSA-rf4j-j272-fj86"
      }
    ],
    "scope": "unknown"
  }
]

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