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import * as z from 'zod';
import {
// Consolidated schemas
BrowseProjectsSchema,
BrowseNamespacesSchema,
BrowseCommitsSchema,
BrowseEventsSchema,
BrowseUsersSchema,
BrowseTodosSchema,
} from './schema-readonly';
import {
// Consolidated schemas
ManageProjectSchema,
ManageNamespaceSchema,
ManageTodosSchema,
} from './schema';
import { enhancedFetch } from '../../utils/fetch';
import { getGitLabBaseUrl } from '../../utils/gitlab-base-url';
import { normalizeProjectId } from '../../utils/projectIdentifier';
import { encodeApiSegment } from '../../utils/api-path';
import { fetchUsers, smartUserSearch, type UserSearchParams } from '../../utils/smart-user-search';
import { cleanGidsFromObject } from '../../utils/idConversion';
import { ToolRegistry, EnhancedToolDefinition } from '../../types';
import { assertActionAllowed } from '../utils';
import { instanceAtLeast } from '../instance-version';
import { withSafeProjectResponse } from './project-response';
import {
browseProjects,
browseNamespaces,
manageProject,
manageNamespace,
} from './project-handlers';
const CommitDiffsSchema = z.array(
z.looseObject({
diff: z.string(),
old_path: z.string(),
new_path: z.string(),
new_file: z.boolean(),
deleted_file: z.boolean(),
}),
);
type CommitDiff = z.infer<typeof CommitDiffsSchema>[number];
/**
* Prefix a commit diff with unified-diff file headers, as GitLab's own `unidiff`
* option does (Gitlab::Git::Diff#unidiff): empty and binary diffs stay as they are.
*/
function withUnifiedHeaders(d: CommitDiff): string {
if (!d.diff || d.diff.startsWith('Binary files')) return d.diff;
const oldHeader = d.new_file ? '/dev/null' : `a/${d.old_path}`;
const newHeader = d.deleted_file ? '/dev/null' : `b/${d.new_path}`;
return `--- ${oldHeader}\n+++ ${newHeader}\n${d.diff}`;
}
/**
* Core tools registry - CQRS consolidated
* All tools use discriminated union schema pattern.
* TypeScript automatically narrows types in each switch case.
*/
export const coreToolRegistry: ToolRegistry = new Map<string, EnhancedToolDefinition>([
// ============================================================================
// BROWSE TOOLS (read-only queries)
// ============================================================================
[
'browse_projects',
{
name: 'browse_projects',
description:
'Find, list, or inspect GitLab projects. Actions: search (find by name/topic across GitLab), list (browse accessible projects or group projects), get (retrieve full project details). Related: manage_project to create/update/delete projects.',
inputSchema: z.toJSONSchema(BrowseProjectsSchema),
requirements: {
default: { tier: 'free' },
// Listing soft-deleted projects needs active admin-mode elevation; the
// registry strips this parameter when elevation is known inactive (non-admin
// OR admin role without elevation), and keeps it when elevated or unknown
// (fail-open). marked_for_deletion_on is a Premium/Ultimate filter (17.1+);
// the registry strips it on lower tiers/older versions.
parameters: {
include_deleted: { requiresAdmin: true },
marked_for_deletion_on: { tier: 'premium', minVersion: '17.1' },
},
},
handler: withSafeProjectResponse(browseProjects),
},
],
[
'browse_namespaces',
{
name: 'browse_namespaces',
description:
'Explore GitLab groups and user namespaces. Actions: list (discover available namespaces), get (retrieve details with storage stats), verify (check if path exists). Related: manage_namespace to create/update/delete groups.',
inputSchema: z.toJSONSchema(BrowseNamespacesSchema),
requirements: { default: { tier: 'free' } },
handler: withSafeProjectResponse(browseNamespaces),
},
],
[
'browse_commits',
{
name: 'browse_commits',
description:
'Explore repository commit history and diffs. Actions: list (browse commits with filters), get (retrieve commit metadata and stats), diff (view code changes). Related: browse_refs for branch/tag info.',
inputSchema: z.toJSONSchema(BrowseCommitsSchema),
requirements: { default: { tier: 'free' } },
handler: async (args: unknown): Promise<unknown> => {
const input = BrowseCommitsSchema.parse(args);
assertActionAllowed('browse_commits', input.action);
switch (input.action) {
case 'list': {
const {
project_id,
ref_name,
since,
until,
path,
author,
all,
with_stats,
first_parent,
order,
trailers,
per_page,
page,
} = input;
const queryParams = new URLSearchParams();
if (ref_name) queryParams.set('ref_name', ref_name);
if (since) queryParams.set('since', since);
if (until) queryParams.set('until', until);
if (path) queryParams.set('path', path);
if (author) queryParams.set('author', author);
if (all !== undefined) queryParams.set('all', String(all));
if (with_stats !== undefined) queryParams.set('with_stats', String(with_stats));
if (first_parent !== undefined) queryParams.set('first_parent', String(first_parent));
if (order) queryParams.set('order', order);
if (trailers !== undefined) queryParams.set('trailers', String(trailers));
Eif (per_page) queryParams.set('per_page', String(per_page));
if (page) queryParams.set('page', String(page));
const apiUrl = `${getGitLabBaseUrl()}/api/v4/projects/${normalizeProjectId(project_id)}/repository/commits?${queryParams}`;
const response = await enhancedFetch(apiUrl);
if (!response.ok) {
throw new Error(`GitLab API error: ${response.status} ${response.statusText}`);
}
return await response.json();
}
case 'get': {
const { project_id, sha, stats } = input;
const queryParams = new URLSearchParams();
if (stats) queryParams.set('stats', 'true');
const apiUrl = `${getGitLabBaseUrl()}/api/v4/projects/${normalizeProjectId(project_id)}/repository/commits/${encodeURIComponent(sha)}?${queryParams}`;
const response = await enhancedFetch(apiUrl);
if (!response.ok) {
throw new Error(`GitLab API error: ${response.status} ${response.statusText}`);
}
return await response.json();
}
case 'diff': {
const { project_id, sha, unidiff, per_page, page } = input;
// `unidiff` landed in GitLab 16.5; before that the headers are added here.
const nativeUnidiff = instanceAtLeast('16.5');
const queryParams = new URLSearchParams();
if (unidiff && nativeUnidiff) queryParams.set('unidiff', 'true');
Eif (per_page) queryParams.set('per_page', String(per_page));
Iif (page) queryParams.set('page', String(page));
const apiUrl = `${getGitLabBaseUrl()}/api/v4/projects/${normalizeProjectId(project_id)}/repository/commits/${encodeURIComponent(sha)}/diff?${queryParams}`;
const response = await enhancedFetch(apiUrl);
if (!response.ok) {
throw new Error(`GitLab API error: ${response.status} ${response.statusText}`);
}
const diffs = (await response.json()) as unknown;
if (!unidiff || nativeUnidiff) return diffs;
const parsed = CommitDiffsSchema.safeParse(diffs);
if (!parsed.success) {
throw new Error(
`GitLab API error: unexpected commit diff response (${parsed.error.issues[0]?.message ?? 'invalid'})`,
);
}
return parsed.data.map((d) => ({ ...d, diff: withUnifiedHeaders(d) }));
}
/* istanbul ignore next -- unreachable with Zod discriminatedUnion */
default:
throw new Error(`Unknown action: ${(input as { action: string }).action}`);
}
},
},
],
[
'browse_events',
{
name: 'browse_events',
description:
'Track GitLab activity and events. Actions: user (your activity across all projects), project (specific project activity feed). Filter by date range, action type, or target type.',
inputSchema: z.toJSONSchema(BrowseEventsSchema),
requirements: { default: { tier: 'free' } },
handler: async (args: unknown): Promise<unknown> => {
const input = BrowseEventsSchema.parse(args);
assertActionAllowed('browse_events', input.action);
const buildQueryParams = (opts: {
target_type?: string;
event_action?: string;
before?: string;
after?: string;
sort?: string;
per_page?: number;
page?: number;
}) => {
const queryParams = new URLSearchParams();
if (opts.target_type) queryParams.set('target_type', opts.target_type);
if (opts.event_action) queryParams.set('action', opts.event_action);
if (opts.before) queryParams.set('before', opts.before);
if (opts.after) queryParams.set('after', opts.after);
if (opts.sort) queryParams.set('sort', opts.sort);
Eif (opts.per_page) queryParams.set('per_page', String(opts.per_page));
if (opts.page) queryParams.set('page', String(opts.page));
return queryParams;
};
switch (input.action) {
case 'user': {
const queryParams = buildQueryParams(input);
const apiUrl = `${getGitLabBaseUrl()}/api/v4/events?${queryParams}`;
const response = await enhancedFetch(apiUrl);
if (!response.ok) {
throw new Error(`GitLab API error: ${response.status} ${response.statusText}`);
}
return await response.json();
}
case 'project': {
const { project_id } = input;
const queryParams = buildQueryParams(input);
const apiUrl = `${getGitLabBaseUrl()}/api/v4/projects/${normalizeProjectId(project_id)}/events?${queryParams}`;
const response = await enhancedFetch(apiUrl);
if (!response.ok) {
throw new Error(`GitLab API error: ${response.status} ${response.statusText}`);
}
return await response.json();
}
/* istanbul ignore next -- unreachable with Zod discriminatedUnion */
default:
throw new Error(`Unknown action: ${(input as { action: string }).action}`);
}
},
},
],
[
'browse_users',
{
name: 'browse_users',
description:
'Find GitLab users with smart pattern detection. Actions: search (find users by name/email/username with transliteration support), get (retrieve specific user by ID). Related: browse_members for project/group membership.',
inputSchema: z.toJSONSchema(BrowseUsersSchema),
// User-type filters newer than the floor are emulated on older instances (fetchUsers).
requirements: { default: { tier: 'free' } },
handler: async (args: unknown): Promise<unknown> => {
const input = BrowseUsersSchema.parse(args);
assertActionAllowed('browse_users', input.action);
switch (input.action) {
case 'search': {
const { smart_search, search, username, public_email, ...otherParams } = input;
const hasUsernameOrEmail = Boolean(username) || Boolean(public_email);
const hasOnlySearch = Boolean(search) && !hasUsernameOrEmail;
const shouldUseSmartSearch =
smart_search === false ? false : smart_search === true || hasOnlySearch;
if (shouldUseSmartSearch && (search || username || public_email)) {
const query = search ?? username ?? public_email ?? '';
const additionalParams: UserSearchParams = {};
Object.entries(otherParams).forEach(([key, value]) => {
if (value !== undefined && key !== 'smart_search' && key !== 'action') {
additionalParams[key] = value;
}
});
return await smartUserSearch(query, additionalParams);
} else {
const { smart_search: _smart, action: _action, ...params } = input;
const { users, warning } = await fetchUsers(params);
// The plain list stays the shape; a filter the instance could only
// partly apply is reported alongside it.
return warning
? { users: cleanGidsFromObject(users), _warning: warning }
: cleanGidsFromObject(users);
}
}
case 'get': {
const { user_id } = input;
const apiUrl = `${getGitLabBaseUrl()}/api/v4/users/${encodeURIComponent(user_id)}`;
const response = await enhancedFetch(apiUrl);
if (!response.ok) {
throw new Error(`GitLab API error: ${response.status} ${response.statusText}`);
}
const user = await response.json();
return cleanGidsFromObject(user);
}
/* istanbul ignore next -- unreachable with Zod discriminatedUnion */
default:
throw new Error(`Unknown action: ${(input as { action: string }).action}`);
}
},
},
],
[
'browse_todos',
{
name: 'browse_todos',
description:
'View your GitLab todo queue (notifications requiring action). Actions: list (filter by state, action type, target type). Todos are auto-created for assignments, mentions, reviews, and pipeline failures. Related: manage_todos to mark done/restore.',
inputSchema: z.toJSONSchema(BrowseTodosSchema),
requirements: { default: { tier: 'free' } },
handler: async (args: unknown): Promise<unknown> => {
const input = BrowseTodosSchema.parse(args);
assertActionAllowed('browse_todos', input.action);
switch (input.action) {
case 'list': {
const queryParams = new URLSearchParams();
const { action: _action, todo_action, ...rest } = input;
// Map todo_action to API 'action' parameter
if (todo_action) queryParams.set('action', todo_action);
Object.entries(rest).forEach(([key, value]) => {
Eif (value !== undefined) {
queryParams.set(key, String(value));
}
});
const apiUrl = `${getGitLabBaseUrl()}/api/v4/todos?${queryParams}`;
const response = await enhancedFetch(apiUrl);
if (!response.ok) {
throw new Error(`GitLab API error: ${response.status} ${response.statusText}`);
}
const todos = await response.json();
return cleanGidsFromObject(todos);
}
/* istanbul ignore next -- unreachable with Zod discriminatedUnion */
default:
throw new Error(`Unknown action: ${(input as { action: string }).action}`);
}
},
},
],
// ============================================================================
// MANAGE TOOLS (write operations)
// ============================================================================
[
'manage_project',
{
name: 'manage_project',
description:
'Create, update, or manage GitLab projects. Actions: create (new project with settings), fork (copy existing project), update (modify settings, including GitLab Duo settings such as automatic Duo code review; any Duo setting GitLab could not apply is listed in not_applied with what it requires), delete (remove permanently), restore (recover a soft-deleted project before purge), archive/unarchive (toggle read-only), transfer (move to different namespace). Related: browse_projects for discovery, including include_deleted to find restorable projects.',
inputSchema: z.toJSONSchema(ManageProjectSchema),
requirements: {
default: { tier: 'free' },
parameters: {
issues_template: { tier: 'premium' },
merge_requests_template: { tier: 'premium' },
merge_pipelines_enabled: { tier: 'premium' },
merge_trains_enabled: { tier: 'premium' },
only_allow_merge_if_all_status_checks_passed: { tier: 'ultimate' },
requirements_access_level: { tier: 'ultimate' },
auto_duo_code_review_enabled: { tier: 'premium', minVersion: '18.0' },
duo_remote_flows_enabled: { tier: 'premium', minVersion: '18.4' },
duo_sast_fp_detection_enabled: { tier: 'ultimate', minVersion: '18.7' },
duo_sast_vr_workflow_enabled: { tier: 'ultimate', minVersion: '18.9' },
duo_secret_detection_fp_enabled: { tier: 'ultimate', minVersion: '18.10' },
duo_dependency_bump_breaking_changes_enabled: { tier: 'ultimate', minVersion: '19.2' },
},
},
handler: withSafeProjectResponse(manageProject),
},
],
[
'manage_namespace',
{
name: 'manage_namespace',
description:
'Create, update, or delete GitLab groups/namespaces. Actions: create (new group with visibility/settings), update (modify group settings, including automatic GitLab Duo code review cascading to subgroups and projects; a Duo setting GitLab could not apply is listed in not_applied with what it requires), delete (remove permanently), restore (recover a soft-deleted group before purge; on GitLab Free needs 18.0+). Related: browse_namespaces for discovery.',
inputSchema: z.toJSONSchema(ManageNamespaceSchema),
requirements: {
default: { tier: 'free' },
parameters: {
membership_lock: { tier: 'premium' },
wiki_access_level: { tier: 'premium' },
ip_restriction_ranges: { tier: 'premium' },
allowed_email_domains_list: { tier: 'premium', minVersion: '17.4' },
unique_project_download_limit: { tier: 'ultimate' },
auto_duo_code_review_enabled: { tier: 'premium', minVersion: '18.7' },
},
},
handler: withSafeProjectResponse(manageNamespace),
},
],
// ============================================================================
// TODOS TOOLS
// ============================================================================
[
'manage_todos',
{
name: 'manage_todos',
description:
'Manage your GitLab todo queue. Actions: mark_done (complete a single todo), mark_all_done (clear entire queue), restore (undo completion). Related: browse_todos to view your todo list.',
inputSchema: z.toJSONSchema(ManageTodosSchema),
requirements: { default: { tier: 'free' } },
handler: async (args: unknown): Promise<unknown> => {
const input = ManageTodosSchema.parse(args);
assertActionAllowed('manage_todos', input.action);
switch (input.action) {
case 'mark_done': {
const apiUrl = `${getGitLabBaseUrl()}/api/v4/todos/${encodeApiSegment(input.id)}/mark_as_done`;
const response = await enhancedFetch(apiUrl, { method: 'POST' });
if (!response.ok) {
throw new Error(`GitLab API error: ${response.status} ${response.statusText}`);
}
const todo = await response.json();
return cleanGidsFromObject(todo);
}
case 'mark_all_done': {
const apiUrl = `${getGitLabBaseUrl()}/api/v4/todos/mark_all_as_done`;
const response = await enhancedFetch(apiUrl, { method: 'POST' });
if (!response.ok) {
throw new Error(`GitLab API error: ${response.status} ${response.statusText}`);
}
return { success: true, message: 'All todos marked as done' };
}
case 'restore': {
const apiUrl = `${getGitLabBaseUrl()}/api/v4/todos/${encodeApiSegment(input.id)}/mark_as_pending`;
const response = await enhancedFetch(apiUrl, { method: 'POST' });
if (!response.ok) {
throw new Error(`GitLab API error: ${response.status} ${response.statusText}`);
}
const todo = await response.json();
return cleanGidsFromObject(todo);
}
/* istanbul ignore next -- unreachable with Zod discriminatedUnion */
default:
throw new Error(`Unknown action: ${(input as { action: string }).action}`);
}
},
},
],
]);
/**
* Get read-only tool names from the registry
*/
export function getCoreReadOnlyToolNames(): string[] {
return [
'browse_projects',
'browse_namespaces',
'browse_commits',
'browse_events',
'browse_users',
'browse_todos',
];
}
/**
* Get all tool definitions from the registry
*/
export function getCoreToolDefinitions(): EnhancedToolDefinition[] {
return Array.from(coreToolRegistry.values());
}
/**
* Get filtered tools based on read-only mode
*/
export function getFilteredCoreTools(readOnlyMode: boolean = false): EnhancedToolDefinition[] {
if (readOnlyMode) {
const readOnlyNames = getCoreReadOnlyToolNames();
return Array.from(coreToolRegistry.values()).filter((tool) =>
readOnlyNames.includes(tool.name),
);
}
return getCoreToolDefinitions();
}
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