gitlab-org--gitlab-foss/doc/api/lint.md

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CI Lint API

Validate the CI YAML config

Introduced in GitLab 8.12.

Checks if CI/CD YAML configuration is valid. This endpoint validates basic CI/CD configuration syntax. It doesn't have any namespace specific context.

POST /ci/lint
Attribute Type Required Description
content string yes The CI/CD configuration content.
include_merged_yaml boolean no If the expanded CI/CD configuration should be included in the response.
curl --header "Content-Type: application/json" "https://gitlab.example.com/api/v4/ci/lint" --data '{"content": "{ \"image\": \"ruby:2.6\", \"services\": [\"postgres\"], \"before_script\": [\"bundle install\", \"bundle exec rake db:create\"], \"variables\": {\"DB_NAME\": \"postgres\"}, \"types\": [\"test\", \"deploy\", \"notify\"], \"rspec\": { \"script\": \"rake spec\", \"tags\": [\"ruby\", \"postgres\"], \"only\": [\"branches\"]}}"}'

Be sure to paste the exact contents of your GitLab CI/CD YAML config because YAML is very sensitive about indentation and spacing.

Example responses:

  • Valid content:

    {
      "status": "valid",
      "errors": []
    }
    
  • Invalid content:

    {
      "status": "invalid",
      "errors": [
        "variables config should be a hash of key value pairs"
      ]
    }
    
  • Without the content attribute:

    {
      "error": "content is missing"
    }
    

YAML expansion

The expansion only works for CI configurations that don't have local includes.

Example contents of a .gitlab-ci.yml passed to the CI Lint API with include_merged_yaml set as true:

include:
  remote: 'https://example.com/remote.yaml'

test:
  stage: test
  script:
    - echo 1

Example contents of https://example.com/remote.yaml:

another_test:
  stage: test
  script:
    - echo 2

Example response:

{
  "status": "valid",
  "errors": [],
  "merged_config": "---\n:another_test:\n  :stage: test\n  :script: echo 2\n:test:\n  :stage: test\n  :script: echo 1\n"
}