| **CI_JOB_STAGE** | 9.0 | 0.5 | The name of the stage as defined in `.gitlab-ci.yml` |
| **CI_JOB_TOKEN** | 9.0 | 1.2 | Token used for authenticating with [GitLab Container Registry][registry], downloading [dependent repositories][dependent-repositories], authenticate with multi-project pipelines when [triggers][trigger-job-token] are involved, and for [downloading job artifacts][get-job-artifacts] |
| **CI_JOB_URL** | 11.1 | 0.5 | Job details URL |
| **CI_MERGE_REQUEST_ID** | 11.6 | all | The ID of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_IID** | 11.6 | all | The IID of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_PROJECT_ID** | 11.6 | all | The ID of the project of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_PROJECT_PATH** | 11.6 | all | The path of the project of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md)(e.g.`namespace/awesome-project`) |
| **CI_MERGE_REQUEST_PROJECT_URL** | 11.6 | all | The URL of the project of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md)(e.g.`http://192.168.10.15:3000/namespace/awesome-project`) |
| **CI_MERGE_REQUEST_REF_PATH** | 11.6 | all | The ref path of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md). (e.g. `refs/merge-requests/1/head`) |
| **CI_MERGE_REQUEST_SOURCE_BRANCH_NAME** | 11.6 | all | The source branch name of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_SOURCE_BRANCH_SHA** | 11.9 | all | The HEAD sha of the source branch of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_SOURCE_PROJECT_ID** | 11.6 | all | The ID of the source project of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_SOURCE_PROJECT_PATH** | 11.6 | all | The path of the source project of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_SOURCE_PROJECT_URL** | 11.6 | all | The URL of the source project of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_TARGET_BRANCH_NAME** | 11.6 | all | The target branch name of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_TARGET_BRANCH_SHA** | 11.9 | all | The HEAD sha of the target branch of the merge request if it's [pipelines for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_ID** | 11.6 | all | The ID of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_IID** | 11.6 | all | The IID of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_PROJECT_ID** | 11.6 | all | The ID of the project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_PROJECT_PATH** | 11.6 | all | The path of the project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md)(e.g.`namespace/awesome-project`) |
| **CI_MERGE_REQUEST_PROJECT_URL** | 11.6 | all | The URL of the project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md)(e.g.`http://192.168.10.15:3000/namespace/awesome-project`) |
| **CI_MERGE_REQUEST_REF_PATH** | 11.6 | all | The ref path of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). (e.g. `refs/merge-requests/1/head`) |
| **CI_MERGE_REQUEST_SOURCE_BRANCH_NAME** | 11.6 | all | The source branch name of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_SOURCE_BRANCH_SHA** | 11.9 | all | The HEAD sha of the source branch of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_SOURCE_PROJECT_ID** | 11.6 | all | The ID of the source project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_SOURCE_PROJECT_PATH** | 11.6 | all | The path of the source project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_SOURCE_PROJECT_URL** | 11.6 | all | The URL of the source project of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_TARGET_BRANCH_NAME** | 11.6 | all | The target branch name of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_TARGET_BRANCH_SHA** | 11.9 | all | The HEAD sha of the target branch of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_TITLE** | 11.9 | all | The title of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_ASSIGNEES** | 11.9 | all | Comma-separated usernames of the assignees of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md). **Comming soon**: [Multitle assignees for merge requests](https://gitlab.com/gitlab-org/gitlab-ee/issues/2004) |
| **CI_MERGE_REQUEST_MILESTONE** | 11.9 | all | The milestone title of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_MERGE_REQUEST_LABELS** | 11.9 | all | Comma-separated label names of the merge request if [the pipelines are for merge requests](../merge_request_pipelines/index.md) |
| **CI_NODE_INDEX** | 11.5 | all | Index of the job in the job set. If the job is not parallelized, this variable is not set. |
| **CI_NODE_TOTAL** | 11.5 | all | Total number of instances of this job running in parallel. If the job is not parallelized, this variable is set to `1`. |
| **CI_API_V4_URL** | 11.7 | all | The GitLab API v4 root URL |