Add Labels API support for GitLab projects

README.md

@@ -40,36 +40,146 @@ env GITLAB_PERSONAL_ACCESS_TOKEN=your_gitlab_token GITLAB_API_URL=your_gitlab_ap
 - `GITLAB_PERSONAL_ACCESS_TOKEN`: Your GitLab personal access token.
 - `GITLAB_API_URL`: Your GitLab API URL. (Default: `https://gitlab.com/api/v4`)
 
-## Tools Reference 🛠️
+## Tools 🛠️
+
+1. `create_or_update_file`
+
+   - Create or update a single file in a GitLab project. 📝
+   - Inputs:
+     - `project_id` (string): Project ID or namespace/project_path
+     - `file_path` (string): Path to create/update the file
+     - `content` (string): File content
+     - `commit_message` (string): Commit message
+     - `branch` (string): Branch to create/update the file in
+     - `previous_path` (optional string): Previous file path when renaming a file
+   - Returns: File content and commit details
+
+2. `push_files`
+
+   - Push multiple files in a single commit. 📤
+   - Inputs:
+     - `project_id` (string): Project ID or namespace/project_path
+     - `branch` (string): Branch to push to
+     - `files` (array): Array of files to push, each with `file_path` and `content` properties
+     - `commit_message` (string): Commit message
+   - Returns: Updated branch reference
+
+3. `search_repositories`
+
+   - Search for GitLab projects. 🔍
+   - Inputs:
+     - `search` (string): Search query
+     - `page` (optional number): Page number (default: 1)
+     - `per_page` (optional number): Results per page (default: 20, max: 100)
+   - Returns: Project search results
+
+4. `create_repository`
+
+   - Create a new GitLab project. ➕
+   - Inputs:
+     - `name` (string): Project name
+     - `description` (optional string): Project description
+     - `visibility` (optional string): Project visibility level (public, private, internal)
+     - `initialize_with_readme` (optional boolean): Initialize with README
+   - Returns: Details of the created project
+
+5. `get_file_contents`
+
+   - Get the contents of a file or directory. 📂
+   - Inputs:
+     - `project_id` (string): Project ID or namespace/project_path
+     - `file_path` (string): Path to the file/directory
+     - `ref` (optional string): Branch, tag, or commit SHA (default: default branch)
+   - Returns: File/directory content
+
+6. `create_issue`
+
+   - Create a new issue. 🐛
+   - Inputs:
+     - `project_id` (string): Project ID or namespace/project_path
+     - `title` (string): Issue title
+     - `description` (string): Issue description
+     - `assignee_ids` (optional number[]): Array of assignee IDs
+     - `milestone_id` (optional number): Milestone ID
+     - `labels` (optional string[]): Array of labels
+   - Returns: Details of the created issue
+
+7. `create_merge_request`
+
+   - Create a new merge request. 🚀
+   - Inputs:
+     - `project_id` (string): Project ID or namespace/project_path
+     - `title` (string): Merge request title
+     - `description` (string): Merge request description
+     - `source_branch` (string): Branch with changes
+     - `target_branch` (string): Branch to merge into
+     - `allow_collaboration` (optional boolean): Allow collaborators to push commits to the source branch
+     - `draft` (optional boolean): Create as a draft merge request
+   - Returns: Details of the created merge request
+
+8. `fork_repository`
+
+   - Fork a project. 🍴
+   - Inputs:
+     - `project_id` (string): Project ID or namespace/project_path to fork
+     - `namespace` (optional string): Namespace to fork into (default: user namespace)
+   - Returns: Details of the forked project
+
+9. `create_branch`
+
+   - Create a new branch. 🌿
+   - Inputs:
+     - `project_id` (string): Project ID or namespace/project_path
+     - `name` (string): New branch name
+     - `ref` (optional string): Ref to create the branch from (branch, tag, commit SHA, default: default branch)
+   - Returns: Created branch reference
+
+10. `get_merge_request`
+
+    - Get details of a merge request. ℹ️
+    - Inputs:
+      - `project_id` (string): Project ID or namespace/project_path
+      - `merge_request_iid` (number): Merge request IID
+    - Returns: Merge request details
+
+11. `get_merge_request_diffs`
+
+    - Get changes (diffs) of a merge request. diff
+    - Inputs:
+      - `project_id` (string): Project ID or namespace/project_path
+      - `merge_request_iid` (number): Merge request IID
+      - `view` (optional string): Diff view type ('inline' or 'parallel')
+    - Returns: Array of merge request diff information
+
+12. `update_merge_request`
+
+    - Update a merge request. 🔄
+    - Inputs:
+      - `project_id` (string): Project ID or namespace/project_path
+      - `merge_request_iid` (number): Merge request IID
+      - `title` (optional string): New title
+      - `description` (string): New description
+      - `target_branch` (optional string): New target branch
+      - `state_event` (optional string): Merge request state change event ('close', 'reopen')
+      - `remove_source_branch` (optional boolean): Remove source branch after merge
+      - `allow_collaboration` (optional boolean): Allow collaborators to push commits to the source branch
+    - Returns: Updated merge request details
+
+13. `create_note`
+    - Create a new note (comment) to an issue or merge request. 💬
+    - Inputs:
+      - `project_id` (string): Project ID or namespace/project_path
+      - `noteable_type` (string): Type of noteable ("issue" or "merge_request")
+      - `noteable_iid` (number): IID of the issue or merge request
+      - `body` (string): Note content
+    - Returns: Details of the created note
 
-| Tool | Description | Parameters | Returns |
-|------|-------------|------------|---------|
-| **`create_or_update_file`** | Create or update a single file in a GitLab project 📝 | • `project_id` (string): Project ID or path<br>• `file_path` (string): Path to create/update<br>• `content` (string): File content<br>• `commit_message` (string): Commit message<br>• `branch` (string): Target branch<br>• `previous_path` (optional): Previous path when renaming | File content and commit details |
-| **`push_files`** | Push multiple files in a single commit 📤 (internally creates a tree and commit) | • `project_id` (string): Project ID or path<br>• `branch` (string): Target branch<br>• `files` (array): Array of files with `file_path` and `content`<br>• `commit_message` (string): Commit message | Updated branch reference |
-| **`search_repositories`** | Search for GitLab projects 🔍 | • `search` (string): Search query<br>• `page` (optional): Page number (default: 1)<br>• `per_page` (optional): Results per page (default: 20) | Project search results |
-| **`create_repository`** | Create a new GitLab project ➕ | • `name` (string): Project name<br>• `description` (optional): Project description<br>• `visibility` (optional): Visibility level<br>• `initialize_with_readme` (optional): Initialize with README | Created project details |
-| **`get_file_contents`** | Get the contents of a file or directory 📂 | • `project_id` (string): Project ID or path<br>• `file_path` (string): Path to file/directory<br>• `ref` (optional): Branch, tag, or commit SHA | File/directory content |
-| **`create_issue`** | Create a new issue 🐛 | • `project_id` (string): Project ID or path<br>• `title` (string): Issue title<br>• `description` (string): Issue description<br>• `assignee_ids` (optional): Array of assignee IDs<br>• `milestone_id` (optional): Milestone ID<br>• `labels` (optional): Array of labels | Created issue details |
-| **`list_issues`** | List issues in a project with comprehensive filtering options 📋 | • `project_id` (string): Project ID or path<br>• Optional filters: `assignee_id`, `assignee_username`, `author_id`, `author_username`, `confidential`, `created_after/before`, `due_date`, `label_name`, `milestone`, `scope`, `search`, `state`, `updated_after/before`<br>• Pagination: `page`, `per_page` | Array of issues |
-| **`get_issue`** | Get details of a specific issue | • `project_id` (string): Project ID or path<br>• `issue_iid` (number): Issue IID | Issue details |
-| **`update_issue`** | Update an existing issue ✏️ | • `project_id` (string): Project ID or path<br>• `issue_iid` (number): Issue IID<br>• Editable fields: `title`, `description`, `assignee_ids`, `labels`, `milestone_id`, `state_event` (close/reopen), `confidential`, `discussion_locked`, `due_date`, `weight` | Updated issue details |
-| **`delete_issue`** | Delete an issue | • `project_id` (string): Project ID or path<br>• `issue_iid` (number): Issue IID | Success message |
-| **`list_issue_links`** | List all links for a specific issue | • `project_id` (string): Project ID or path<br>• `issue_iid` (number): Issue IID | Array of linked issues |
-| **`get_issue_link`** | Get details of a specific issue link | • `project_id` (string): Project ID or path<br>• `issue_iid` (number): Issue IID<br>• `issue_link_id` (number): Link ID | Issue link details |
-| **`create_issue_link`** | Create a link between two issues | • `project_id` (string): Project ID or path<br>• `issue_iid` (number): Source issue IID<br>• `target_project_id` (string): Target project ID<br>• `target_issue_iid` (number): Target issue IID<br>• `link_type` (optional): Relationship type | Created link details |
-| **`delete_issue_link`** | Delete an issue link | • `project_id` (string): Project ID or path<br>• `issue_iid` (number): Issue IID<br>• `issue_link_id` (number): Link ID | Success message |
-| **`create_merge_request`** | Create a new merge request 🚀 | • `project_id` (string): Project ID or path<br>• `title` (string): MR title<br>• `description` (string): MR description<br>• `source_branch` (string): Branch with changes<br>• `target_branch` (string): Branch to merge into<br>• `allow_collaboration` (optional): Allow collaborators<br>• `draft` (optional): Create as draft | Created merge request details |
-| **`fork_repository`** | Fork a project 🍴 | • `project_id` (string): Project ID or path to fork<br>• `namespace` (optional): Namespace to fork into | Forked project details |
-| **`create_branch`** | Create a new branch 🌿 | • `project_id` (string): Project ID or path<br>• `branch` (string): New branch name<br>• `ref` (optional): Reference to create from | Created branch reference |
-| **`get_merge_request`** | Get details of a merge request ℹ️ | • `project_id` (string): Project ID or path<br>• `merge_request_iid` (number): MR IID | Merge request details |
-| **`get_merge_request_diffs`** | Get changes of a merge request | • `project_id` (string): Project ID or path<br>• `merge_request_iid` (number): MR IID<br>• `view` (optional): Diff view type | Array of merge request diffs |
-| **`update_merge_request`** | Update a merge request 🔄 | • `project_id` (string): Project ID or path<br>• `merge_request_iid` (number): MR IID<br>• Editable fields: `title`, `description`, `target_branch`, `assignee_ids`, `labels`, `state_event` (close/reopen), `remove_source_branch`, `squash`, `draft` | Updated merge request details |
-| **`create_note`** | Create a comment on an issue or MR 💬 | • `project_id` (string): Project ID or path<br>• `noteable_type` (string): "issue" or "merge_request"<br>• `noteable_iid` (number): IID of the issue or MR<br>• `body` (string): Comment content | Created note details |
-| **`list_namespaces`** | List available namespaces | • `search` (optional): Search term<br>• `page` (optional): Page number<br>• `per_page` (optional): Results per page<br>• `owned` (optional): Filter by ownership | Array of namespaces |
-| **`get_namespace`** | Get details of a namespace | • `namespace_id` (string): Namespace ID or path | Namespace details |
-| **`verify_namespace`** | Check if a namespace exists | • `path` (string): Namespace path to verify | Verification result |
-| **`get_project`** | Get details of a specific project | • `project_id` (string): Project ID or path | Project details |
 | **`list_projects`** | List accessible projects with rich filtering options 📊 | • Search/filtering: `search`, `owned`, `membership`, `archived`, `visibility`<br>• Features filtering: `with_issues_enabled`, `with_merge_requests_enabled`<br>• Sorting: `order_by`, `sort`<br>• Access control: `min_access_level`<br>• Pagination: `page`, `per_page`, `simple` | Array of projects |
+| **`list_labels`** | List all labels for a project with filtering options 🏷️ | • `project_id` (string): Project ID or path<br>• `with_counts` (optional): Include issue and merge request counts<br>• `include_ancestor_groups` (optional): Include ancestor groups<br>• `search` (optional): Filter labels by keyword | Array of labels |
+| **`get_label`** | Get a single label from a project 🏷️ | • `project_id` (string): Project ID or path<br>• `label_id` (number/string): Label ID or name<br>• `include_ancestor_groups` (optional): Include ancestor groups | Label details |
+| **`create_label`** | Create a new label in a project 🏷️➕ | • `project_id` (string): Project ID or path<br>• `name` (string): Label name<br>• `color` (string): Color in hex format (e.g., "#FF0000")<br>• `description` (optional): Label description<br>• `priority` (optional): Label priority | Created label details |
+| **`update_label`** | Update an existing label in a project 🏷️✏️ | • `project_id` (string): Project ID or path<br>• `label_id` (number/string): Label ID or name<br>• `new_name` (optional): New label name<br>• `color` (optional): New color in hex format<br>• `description` (optional): New description<br>• `priority` (optional): New priority | Updated label details |
+| **`delete_label`** | Delete a label from a project 🏷️❌ | • `project_id` (string): Project ID or path<br>• `label_id` (number/string): Label ID or name | Success message |
 
 ## Environment Variable Configuration
 

index.ts

@@ -27,6 +27,7 @@ import {
   GitLabNamespaceSchema,
   GitLabNamespaceExistsResponseSchema,
   GitLabProjectSchema,
+  GitLabLabelSchema,
   CreateRepositoryOptionsSchema,
   CreateIssueOptionsSchema,
   CreateMergeRequestOptionsSchema,
@@ -59,6 +60,11 @@ import {
   VerifyNamespaceSchema,
   GetProjectSchema,
   ListProjectsSchema,
+  ListLabelsSchema,
+  GetLabelSchema,
+  CreateLabelSchema,
+  UpdateLabelSchema,
+  DeleteLabelSchema,
   CreateNoteSchema,
   type GitLabFork,
   type GitLabReference,
@@ -77,6 +83,7 @@ import {
   type GitLabNamespace,
   type GitLabNamespaceExistsResponse,
   type GitLabProject,
+  type GitLabLabel,
 } from "./schemas.js";
 
 /**
@@ -1204,22 +1211,187 @@ async function getProject(
  * @returns {Promise<GitLabProject[]>} List of projects
  */
 async function listProjects(options: z.infer<typeof ListProjectsSchema> = {}): Promise<GitLabProject[]> {
-  const url = new URL(`${GITLAB_API_URL}/projects`);
+  // Construct the query parameters
+  const params = new URLSearchParams();
+  for (const [key, value] of Object.entries(options)) {
+    if (value !== undefined && value !== null) {
+      if (typeof value === "boolean") {
+        params.append(key, value ? "true" : "false");
+      } else {
+        params.append(key, String(value));
+      }
+    }
+  }
 
-  // Add all the query parameters from options
+  // Make the API request
+  const response = await fetch(
+    `${GITLAB_API_URL}/projects?${params.toString()}`,
+    {
+      method: "GET",
+      headers: DEFAULT_HEADERS,
+    }
+  );
+
+  // Handle errors
+  await handleGitLabError(response);
+
+  // Parse and return the data
+  const data = await response.json();
+  return z.array(GitLabProjectSchema).parse(data);
+}
+
+/**
+ * List labels for a project
+ *
+ * @param projectId The ID or URL-encoded path of the project
+ * @param options Optional parameters for listing labels
+ * @returns Array of GitLab labels
+ */
+async function listLabels(
+  projectId: string,
+  options: Omit<z.infer<typeof ListLabelsSchema>, "project_id"> = {}
+): Promise<GitLabLabel[]> {
+  // Construct the URL with project path
+  const url = new URL(`${GITLAB_API_URL}/projects/${encodeURIComponent(projectId)}/labels`);
+
+  // Add query parameters
   Object.entries(options).forEach(([key, value]) => {
     if (value !== undefined) {
-      url.searchParams.append(key, value.toString());
+      if (typeof value === "boolean") {
+        url.searchParams.append(key, value ? "true" : "false");
+      } else {
+        url.searchParams.append(key, String(value));
+      }
     }
   });
 
+  // Make the API request
   const response = await fetch(url.toString(), {
     headers: DEFAULT_HEADERS,
   });
 
+  // Handle errors
   await handleGitLabError(response);
+
+  // Parse and return the data
   const data = await response.json();
-  return z.array(GitLabRepositorySchema).parse(data);
+  return data as GitLabLabel[];
+}
+
+/**
+ * Get a single label from a project
+ *
+ * @param projectId The ID or URL-encoded path of the project
+ * @param labelId The ID or name of the label
+ * @param includeAncestorGroups Whether to include ancestor groups
+ * @returns GitLab label
+ */
+async function getLabel(
+  projectId: string,
+  labelId: number | string,
+  includeAncestorGroups?: boolean
+): Promise<GitLabLabel> {
+  const url = new URL(`${GITLAB_API_URL}/projects/${encodeURIComponent(projectId)}/labels/${encodeURIComponent(String(labelId))}`);
+
+  // Add query parameters
+  if (includeAncestorGroups !== undefined) {
+    url.searchParams.append("include_ancestor_groups", includeAncestorGroups ? "true" : "false");
+  }
+
+  // Make the API request
+  const response = await fetch(url.toString(), {
+    headers: DEFAULT_HEADERS,
+  });
+
+  // Handle errors
+  await handleGitLabError(response);
+
+  // Parse and return the data
+  const data = await response.json();
+  return data as GitLabLabel;
+}
+
+/**
+ * Create a new label in a project
+ *
+ * @param projectId The ID or URL-encoded path of the project
+ * @param options Options for creating the label
+ * @returns Created GitLab label
+ */
+async function createLabel(
+  projectId: string,
+  options: Omit<z.infer<typeof CreateLabelSchema>, "project_id">
+): Promise<GitLabLabel> {
+  // Make the API request
+  const response = await fetch(
+    `${GITLAB_API_URL}/projects/${encodeURIComponent(projectId)}/labels`,
+    {
+      method: "POST",
+      headers: DEFAULT_HEADERS,
+      body: JSON.stringify(options),
+    }
+  );
+
+  // Handle errors
+  await handleGitLabError(response);
+
+  // Parse and return the data
+  const data = await response.json();
+  return data as GitLabLabel;
+}
+
+/**
+ * Update an existing label in a project
+ *
+ * @param projectId The ID or URL-encoded path of the project
+ * @param labelId The ID or name of the label to update
+ * @param options Options for updating the label
+ * @returns Updated GitLab label
+ */
+async function updateLabel(
+  projectId: string,
+  labelId: number | string,
+  options: Omit<z.infer<typeof UpdateLabelSchema>, "project_id" | "label_id">
+): Promise<GitLabLabel> {
+  // Make the API request
+  const response = await fetch(
+    `${GITLAB_API_URL}/projects/${encodeURIComponent(projectId)}/labels/${encodeURIComponent(String(labelId))}`,
+    {
+      method: "PUT",
+      headers: DEFAULT_HEADERS,
+      body: JSON.stringify(options),
+    }
+  );
+
+  // Handle errors
+  await handleGitLabError(response);
+
+  // Parse and return the data
+  const data = await response.json();
+  return data as GitLabLabel;
+}
+
+/**
+ * Delete a label from a project
+ *
+ * @param projectId The ID or URL-encoded path of the project
+ * @param labelId The ID or name of the label to delete
+ */
+async function deleteLabel(
+  projectId: string,
+  labelId: number | string
+): Promise<void> {
+  // Make the API request
+  const response = await fetch(
+    `${GITLAB_API_URL}/projects/${encodeURIComponent(projectId)}/labels/${encodeURIComponent(String(labelId))}`,
+    {
+      method: "DELETE",
+      headers: DEFAULT_HEADERS,
+    }
+  );
+
+  // Handle errors
+  await handleGitLabError(response);
 }
 
 server.setRequestHandler(ListToolsRequestSchema, async () => {
@@ -1358,6 +1530,31 @@ server.setRequestHandler(ListToolsRequestSchema, async () => {
         description: "List projects accessible by the current user",
         inputSchema: zodToJsonSchema(ListProjectsSchema),
       },
+      {
+        name: "list_labels",
+        description: "List labels for a project",
+        inputSchema: zodToJsonSchema(ListLabelsSchema),
+      },
+      {
+        name: "get_label",
+        description: "Get a single label from a project",
+        inputSchema: zodToJsonSchema(GetLabelSchema),
+      },
+      {
+        name: "create_label",
+        description: "Create a new label in a project",
+        inputSchema: zodToJsonSchema(CreateLabelSchema),
+      },
+      {
+        name: "update_label",
+        description: "Update an existing label in a project",
+        inputSchema: zodToJsonSchema(UpdateLabelSchema),
+      },
+      {
+        name: "delete_label",
+        description: "Delete a label from a project",
+        inputSchema: zodToJsonSchema(DeleteLabelSchema),
+      },
     ],
   };
 });
@@ -1622,10 +1819,14 @@ server.setRequestHandler(CallToolRequestSchema, async (request) => {
         });
 
         const response = await fetch(url.toString(), {
+          method: "GET",
           headers: DEFAULT_HEADERS,
         });
 
+        // Handle errors
         await handleGitLabError(response);
+
+        // Parse and return the data
         const data = await response.json();
         const projects = z.array(GitLabProjectSchema).parse(data);
 
@@ -1715,6 +1916,47 @@ server.setRequestHandler(CallToolRequestSchema, async (request) => {
         };
       }
 
+      case "list_labels": {
+        const args = ListLabelsSchema.parse(request.params.arguments);
+        const labels = await listLabels(args.project_id, args);
+        return {
+          content: [{ type: "text", text: JSON.stringify(labels, null, 2) }],
+        };
+      }
+
+      case "get_label": {
+        const args = GetLabelSchema.parse(request.params.arguments);
+        const label = await getLabel(args.project_id, args.label_id, args.include_ancestor_groups);
+        return {
+          content: [{ type: "text", text: JSON.stringify(label, null, 2) }],
+        };
+      }
+
+      case "create_label": {
+        const args = CreateLabelSchema.parse(request.params.arguments);
+        const label = await createLabel(args.project_id, args);
+        return {
+          content: [{ type: "text", text: JSON.stringify(label, null, 2) }],
+        };
+      }
+
+      case "update_label": {
+        const args = UpdateLabelSchema.parse(request.params.arguments);
+        const { project_id, label_id, ...options } = args;
+        const label = await updateLabel(project_id, label_id, options);
+        return {
+          content: [{ type: "text", text: JSON.stringify(label, null, 2) }],
+        };
+      }
+
+      case "delete_label": {
+        const args = DeleteLabelSchema.parse(request.params.arguments);
+        await deleteLabel(args.project_id, args.label_id);
+        return {
+          content: [{ type: "text", text: JSON.stringify({ status: "success", message: "Label deleted successfully" }, null, 2) }],
+        };
+      }
+
       default:
         throw new Error(`Unknown tool: ${request.params.name}`);
     }

schemas.ts

@@ -228,7 +228,15 @@ export const GitLabLabelSchema = z.object({
   id: z.number(),
   name: z.string(),
   color: z.string(),
-  description: z.string().optional(),
+  text_color: z.string(),
+  description: z.string().nullable(),
+  description_html: z.string().nullable(),
+  open_issues_count: z.number().optional(),
+  closed_issues_count: z.number().optional(),
+  open_merge_requests_count: z.number().optional(),
+  subscribed: z.boolean().optional(),
+  priority: z.number().nullable().optional(),
+  is_project_label: z.boolean().optional(),
 });
 
 export const GitLabUserSchema = z.object({
@@ -619,6 +627,42 @@ export const ListProjectsSchema = z.object({
   min_access_level: z.number().optional().describe("Filter by minimum access level"),
 });
 
+// Label operation schemas
+export const ListLabelsSchema = z.object({
+  project_id: z.string().describe("Project ID or URL-encoded path"),
+  with_counts: z.boolean().optional().describe("Whether or not to include issue and merge request counts"),
+  include_ancestor_groups: z.boolean().optional().describe("Include ancestor groups"),
+  search: z.string().optional().describe("Keyword to filter labels by"),
+});
+
+export const GetLabelSchema = z.object({
+  project_id: z.string().describe("Project ID or URL-encoded path"),
+  label_id: z.union([z.number(), z.string()]).describe("The ID or title of a project's label"),
+  include_ancestor_groups: z.boolean().optional().describe("Include ancestor groups"),
+});
+
+export const CreateLabelSchema = z.object({
+  project_id: z.string().describe("Project ID or URL-encoded path"),
+  name: z.string().describe("The name of the label"),
+  color: z.string().describe("The color of the label given in 6-digit hex notation with leading '#' sign"),
+  description: z.string().optional().describe("The description of the label"),
+  priority: z.number().nullable().optional().describe("The priority of the label"),
+});
+
+export const UpdateLabelSchema = z.object({
+  project_id: z.string().describe("Project ID or URL-encoded path"),
+  label_id: z.union([z.number(), z.string()]).describe("The ID or title of a project's label"),
+  new_name: z.string().optional().describe("The new name of the label"),
+  color: z.string().optional().describe("The color of the label given in 6-digit hex notation with leading '#' sign"),
+  description: z.string().optional().describe("The new description of the label"),
+  priority: z.number().nullable().optional().describe("The new priority of the label"),
+});
+
+export const DeleteLabelSchema = z.object({
+  project_id: z.string().describe("Project ID or URL-encoded path"),
+  label_id: z.union([z.number(), z.string()]).describe("The ID or title of a project's label"),
+});
+
 // Export types
 export type GitLabAuthor = z.infer<typeof GitLabAuthorSchema>;
 export type GitLabFork = z.infer<typeof GitLabForkSchema>;
@@ -645,3 +689,4 @@ export type GitLabIssueLink = z.infer<typeof GitLabIssueLinkSchema>;
 export type GitLabNamespace = z.infer<typeof GitLabNamespaceSchema>;
 export type GitLabNamespaceExistsResponse = z.infer<typeof GitLabNamespaceExistsResponseSchema>;
 export type GitLabProject = z.infer<typeof GitLabProjectSchema>;
+export type GitLabLabel = z.infer<typeof GitLabLabelSchema>;