Gitlab API

Development / OAuth Advanced HTTPS
Varies by plan (check documentation)

Overview

The GitLab REST API provides comprehensive programmatic control over GitLab projects, including repositories, merge requests, pipelines, issues, CI/CD variables, and user management. It works with both GitLab.com (cloud) and self-hosted GitLab instances, making it popular in enterprise DevOps workflows. Authentication is via OAuth 2.0 or personal/project access tokens.

Beginner Tip

GitLab API closely mirrors GitHub API but uses merge requests instead of pull requests and projects as the primary resource. For GitLab.com, the base URL is https://gitlab.com/api/v4/. Use a personal access token with read_api scope for read-only access — create one at gitlab.com > User Settings > Access Tokens.

Available Data

repository name and description
star and fork counts
contributor data
issues and pull requests
commit history
phone number validation

Example Response

JSON Response
{
  "make": "Toyota",
  "model": "Camry",
  "year": 2025,
  "engine": "2.5L 4-cylinder",
  "fuel_economy": {
    "city_mpg": 28,
    "highway_mpg": 39
  },
  "msrp": 28400
}

Field Reference

id Unique numeric project ID used in all subsequent API calls referencing this project.
name Display name of the GitLab project.
path_with_namespace Full path including group namespace, e.g., "mygroup/my-project", used to construct project URLs.
star_count Number of users who have starred the project.
last_activity_at ISO 8601 timestamp of the most recent activity (push, comment, etc.) in the project.
visibility Project visibility level: "public", "internal", or "private".

Implementation Example

Request
// ⚠️ Note: This URL may be a documentation page. Check official docs for actual API endpoint.
const url = "https://docs.gitlab.com/ee/api/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "Authorization": "Bearer YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

401 Unauthorized Missing PRIVATE-TOKEN header or expired/invalid token
Add PRIVATE-TOKEN: <your-token> as a request header. Alternatively use Authorization: Bearer <oauth-token> for OAuth flows.
404 Not Found for existing project GitLab uses numeric project IDs or URL-encoded namespace/project paths — a plain project name will not work
Use the full URL-encoded path like gitlab.com%2Fmy-group%2Fmy-project or find the numeric project ID in the project General Settings page.
Merge requests not returned for a project Default state filter only returns opened MRs, and the project may only have closed or merged ones
Add ?state=all to your merge requests query to retrieve all states, or use state=merged for completed MRs.

Metadata Score Breakdown

Estimated from metadata — endpoint not independently tested

This score is estimated from observable metadata — HTTPS support, authentication model, declared CORS, and documentation reachability — because the API requires authentication or exposes no publicly testable endpoint. The five-signal breakdown is only shown for live-tested APIs.

Metadata estimate · endpoint not independently tested

Technical Specifications

Auth OAuth
HTTPS REQUIRED
CORS UNKNOWN
Category Development
Difficulty Advanced
Verified: 2026-04-07

Alternatives to Gitlab

Technical alternatives for different use cases.

Full DevOps platform with built-in CI/CD

Better For

Open-source community size and discoverability

Trade-off

Integrated CI/CD pipelines without third-party tools

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