[feat/pipeline-support] feat: add USE_PIPELINE environment variable for conditional pipeline feature activation

✨ Breaking Changes:
- Pipeline features are now opt-in via USE_PIPELINE environment variable

📝 Details:
- Pipeline 관련 도구들을 USE_PIPELINE 환경 변수로 제어 가능하도록 변경
- USE_GITLAB_WIKI, USE_MILESTONE과 동일한 패턴으로 구현
- 기본값은 false로 설정되어 pipeline 기능은 명시적으로 활성화해야 함
- README에 USE_PIPELINE 환경 변수 설명 추가

README.md

@@ -27,7 +27,8 @@ When using with the Claude App, you need to set up your API key and URLs directl
         "GITLAB_API_URL": "your_gitlab_api_url",
         "GITLAB_READ_ONLY_MODE": "false",
         "USE_GITLAB_WIKI": "false", // use wiki api?
-        "USE_MILESTONE": "false" // use milestone api?
+        "USE_MILESTONE": "false", // use milestone api?
+        "USE_PIPELINE": "false" // use pipeline api?
       }
     }
   }
@@ -55,6 +56,8 @@ When using with the Claude App, you need to set up your API key and URLs directl
         "USE_GITLAB_WIKI",
         "-e",
         "USE_MILESTONE",
+        "-e",
+        "USE_PIPELINE",
         "iwakitakuma/gitlab-mcp"
       ],
       "env": {
@@ -62,7 +65,8 @@ When using with the Claude App, you need to set up your API key and URLs directl
         "GITLAB_API_URL": "https://gitlab.com/api/v4", // Optional, for self-hosted GitLab
         "GITLAB_READ_ONLY_MODE": "false",
         "USE_GITLAB_WIKI": "true",
-        "USE_MILESTONE": "true"
+        "USE_MILESTONE": "true",
+        "USE_PIPELINE": "true"
       }
     }
   }
@@ -82,6 +86,7 @@ $ sh scripts/image_push.sh docker_user_name
 - `GITLAB_READ_ONLY_MODE`: When set to 'true', restricts the server to only expose read-only operations. Useful for enhanced security or when write access is not needed. Also useful for using with Cursor and it's 40 tool limit.
 - `USE_GITLAB_WIKI`: When set to 'true', enables the wiki-related tools (list_wiki_pages, get_wiki_page, create_wiki_page, update_wiki_page, delete_wiki_page). By default, wiki features are disabled.
 - `USE_MILESTONE`: When set to 'true', enables the milestone-related tools (list_milestones, get_milestone, create_milestone, edit_milestone, delete_milestone, get_milestone_issue, get_milestone_merge_requests, promote_milestone, get_milestone_burndown_events). By default, milestone features are disabled.
+- `USE_PIPELINE`: When set to 'true', enables the pipeline-related tools (list_pipelines, get_pipeline, list_pipeline_jobs, get_pipeline_job, get_pipeline_job_output, create_pipeline, retry_pipeline, cancel_pipeline). By default, pipeline features are disabled.
 
 ## Tools 🛠️
 

index.ts

@@ -192,6 +192,7 @@ const GITLAB_PERSONAL_ACCESS_TOKEN = process.env.GITLAB_PERSONAL_ACCESS_TOKEN;
 const GITLAB_READ_ONLY_MODE = process.env.GITLAB_READ_ONLY_MODE === "true";
 const USE_GITLAB_WIKI = process.env.USE_GITLAB_WIKI === "true";
 const USE_MILESTONE = process.env.USE_MILESTONE === "true";
+const USE_PIPELINE = process.env.USE_PIPELINE === "true";
 
 // Add proxy configuration
 const HTTP_PROXY = process.env.HTTP_PROXY;
@@ -614,6 +615,18 @@ const milestoneToolNames = [
   "get_milestone_burndown_events",
 ];
 
+// Define which tools are related to pipelines and can be toggled by USE_PIPELINE
+const pipelineToolNames = [
+  "list_pipelines",
+  "get_pipeline",
+  "list_pipeline_jobs",
+  "get_pipeline_job",
+  "get_pipeline_job_output",
+  "create_pipeline",
+  "retry_pipeline",
+  "cancel_pipeline",
+];
+
 /**
  * Smart URL handling for GitLab API
  *
@@ -2852,9 +2865,13 @@ server.setRequestHandler(ListToolsRequestSchema, async () => {
     ? tools0
     : tools0.filter(tool => !wikiToolNames.includes(tool.name));
   // Toggle milestone tools by USE_MILESTONE flag
-  let tools = USE_MILESTONE
+  const tools2 = USE_MILESTONE
     ? tools1
     : tools1.filter(tool => !milestoneToolNames.includes(tool.name));
+  // Toggle pipeline tools by USE_PIPELINE flag
+  let tools = USE_PIPELINE
+    ? tools2
+    : tools2.filter(tool => !pipelineToolNames.includes(tool.name));
 
   // <<< START: Gemini 호환성을 위해 $schema 제거 >>>
   tools = tools.map(tool => {