GitLab Documentation


GitLab API

Resources

Clients

Introduction

All API requests require authentication. You need to pass a private_token parameter by URL or header. If passed as header, the header name must be "PRIVATE-TOKEN" (capital and with dash instead of underscore). You can find or reset your private token in your profile.

If no, or an invalid, private_token is provided then an error message will be returned with status code 401:

{
  "message": "401 Unauthorized"
}

API requests should be prefixed with api and the API version. The API version is defined in lib/api.rb.

Example of a valid API request:

GET http://example.com/api/v3/projects?private_token=QVy1PB7sTxfy4pqfZM1U

Example for a valid API request using curl and authentication via header:

curl --header "PRIVATE-TOKEN: QVy1PB7sTxfy4pqfZM1U" "http://example.com/api/v3/projects"

The API uses JSON to serialize data. You don't need to specify .json at the end of API URL.

Status codes

The API is designed to return different status codes according to context and action. In this way if a request results in an error the caller is able to get insight into what went wrong, e.g. status code 400 Bad Request is returned if a required attribute is missing from the request. The following list gives an overview of how the API functions generally behave.

API request types:

The following list shows the possible return codes for API requests.

Return values:

Sudo

All API requests support performing an api call as if you were another user, if your private token is for an administration account. You need to pass sudo parameter by url or header with an id or username of the user you want to perform the operation as. If passed as header, the header name must be "SUDO" (capitals).

If a non administrative private_token is provided then an error message will be returned with status code 403:

{
  "message": "403 Forbidden: Must be admin to use sudo"
}

If the sudo user id or username cannot be found then an error message will be returned with status code 404:

{
  "message": "404 Not Found: No user id or username for: <id/username>"
}

Example of a valid API with sudo request:

GET http://example.com/api/v3/projects?private_token=QVy1PB7sTxfy4pqfZM1U&sudo=username
GET http://example.com/api/v3/projects?private_token=QVy1PB7sTxfy4pqfZM1U&sudo=23

Example for a valid API request with sudo using curl and authentication via header:

curl --header "PRIVATE-TOKEN: QVy1PB7sTxfy4pqfZM1U" --header "SUDO: username" "http://example.com/api/v3/projects"
curl --header "PRIVATE-TOKEN: QVy1PB7sTxfy4pqfZM1U" --header "SUDO: 23" "http://example.com/api/v3/projects"

Pagination

When listing resources you can pass the following parameters:

Link headers are send back with each response. These have rel prev/next/first/last and contain the relevant URL. Please use these instead of generating your own urls.

id vs iid

When you work with API you may notice two similar fields in api entities: id and iid. The main difference between them is scope. Example:

Issue:

id: 46
iid: 5

So if you want to get issue with api you use http://host/api/v3/.../issues/:id.json. But when you want to create a link to web page - use http:://host/project/issues/:iid.json

Data validation and error reporting

When working with the API you may encounter validation errors. In such case, the API will answer with an HTTP 400 status. Such errors appear in two cases:

When an attribute is missing, you will get something like:

HTTP/1.1 400 Bad Request
Content-Type: application/json

{
    "message":"400 (Bad request) MCONTENTquot;titleMCONTENTquot; not given"
}

When a validation error occurs, error messages will be different. They will hold all details of validation errors:

HTTP/1.1 400 Bad Request
Content-Type: application/json

{
    "message": {
        "bio": [
            "is too long (maximum is 255 characters)"
        ]
    }
}

This makes error messages more machine-readable. The format can be described as follow:

{
    "message": {
        "<property-name>": [
            "<error-message>",
            "<error-message>",
            ...
        ],
        "<embed-entity>": {
            "<property-name>": [
                "<error-message>",
                "<error-message>",
                ...
            ],
        }
    }
}

Generated from https///gitlab.com/gitlab-org/gitlab-ce at Mon Oct 20 22:20:19 2014, please submit improvements.