Zoho Desk Server

An MCP (Model Context Protocol) server that exposes the entire Zoho Desk API (706 endpoints across 130 categories) through 3 context-efficient tools.

Instead of registering one tool per endpoint (which would flood the LLM context), the server uses a search-then-call pattern:

1. list_categories — discover API areas
2. search_endpoints — find the right endpoint by keyword/category
3. call_api — execute it by operationId

Prerequisites

• Bun v1.3+
• A Zoho Desk account with API access
• A valid Zoho OAuth token

Installation

bun install

Configuration

The server reads three environment variables:

Variable	Required	Default	Description
ZOHO_OAUTH_TOKEN	Yes	—	Your Zoho OAuth token (see Authorization below)
ZOHO_ORG_ID	Yes	—	Your Zoho Desk organization ID. Auto-injected into every API call.
ZOHO_DESK_DOMAIN	No	desk.zoho.com	Zoho Desk API domain. Use desk.zoho.eu, desk.zoho.in, desk.zoho.com.au, desk.zoho.jp, or desk.zoho.com.cn for other data centers.

Authorization

Zoho Desk APIs use OAuth 2.0. To get your token:

1. Register a Zoho API client at Zoho API Console
   • Choose "Self Client" for quick testing, or "Server-based Application" for production
2. Generate a grant token with the scopes your operations need (e.g., Desk.tickets.READ, Desk.tickets.CREATE). Common scopes:
   • Desk.tickets.READ / CREATE / UPDATE / DELETE
   • Desk.contacts.READ / CREATE / UPDATE / DELETE
   • Desk.settings.READ / CREATE / UPDATE / DELETE
   • Desk.basic.READ / CREATE / UPDATE / DELETE
   • Desk.search.READ
   • Desk.articles.READ / CREATE / UPDATE / DELETE
   • Desk.tasks.READ / CREATE / UPDATE / DELETE
3. Exchange the grant token for an access token via:

   POST https://accounts.zoho.com/oauth/v2/token
     ?grant_type=authorization_code
     &client_id=YOUR_CLIENT_ID
     &client_secret=YOUR_CLIENT_SECRET
     &code=YOUR_GRANT_TOKEN
   

4. Use the returned access_token as ZOHO_OAUTH_TOKEN. For long-lived access, store the refresh_token and exchange it before expiry.

Finding your Org ID: Call GET https://desk.zoho.com/api/v1/organizations with your token. The id field in the response is your ZOHO_ORG_ID.

Running the Server

bun run index.ts

The server communicates over stdio using the MCP protocol.

MCP Integration

Claude Code

Add to your Claude Code MCP settings (~/.claude/settings.json or project-level .claude/settings.json):

{
  "mcpServers": {
    "zoho-desk": {
      "command": "bun",
      "args": ["/absolute/path/to/desk_mcp/index.ts"],
      "env": {
        "ZOHO_OAUTH_TOKEN": "your-oauth-token",
        "ZOHO_ORG_ID": "your-org-id",
        "ZOHO_DESK_DOMAIN": "desk.zoho.com"
      }
    }
  }
}

Claude Desktop

Add to your Claude Desktop config (~/Library/Application Support/Claude/claude_desktop_config.json on macOS):

{
  "mcpServers": {
    "zoho-desk": {
      "command": "bun",
      "args": ["/absolute/path/to/desk_mcp/index.ts"],
      "env": {
        "ZOHO_OAUTH_TOKEN": "your-oauth-token",
        "ZOHO_ORG_ID": "your-org-id",
        "ZOHO_DESK_DOMAIN": "desk.zoho.com"
      }
    }
  }
}

Any MCP Client

The server uses the standard StdioServerTransport. Any MCP-compatible client can connect by spawning the process and communicating over stdin/stdout.

Tools

list_categories

Lists all 130 Zoho Desk API categories with their endpoint counts.

Parameters: None

Example response:

130 categories, 706 total endpoints:

Account (14 endpoints)
Agent (18 endpoints)
Article (9 endpoints)
...
Ticket (27 endpoints)

search_endpoints

Searches endpoints by keyword and/or category. Returns matching operations with full details: operationId, HTTP method, path, summary, description, parameters, and whether the endpoint accepts a request body.

Parameters:

Name	Type	Required	Description
query	string	No	Search keywords (e.g., "create ticket", "list agents"). Matches against operationId, summary, description, path, and tags. Multiple words use AND logic.
category	string	No	Filter by category (e.g., "Ticket", "Agent"). Case-insensitive.
limit	number	No	Max results to return. Default: 20.

Example response:

[
  {
    "operationId": "getTicket",
    "method": "GET",
    "path": "/api/v1/tickets/{ticketId}",
    "category": "Ticket",
    "summary": "Get a ticket",
    "description": "This API fetches a ticket by its ID.",
    "parameters": [
      { "name": "ticketId", "in": "path", "required": true, "description": "ID of the ticket" },
      { "name": "include", "in": "query", "required": false, "description": "..." }
    ],
    "hasBody": false
  }
]

call_api

Executes a Zoho Desk API endpoint by its operationId.

Parameters:

Name	Type	Required	Description
operationId	string	Yes	The operationId from search_endpoints results.
params	object	No	Parameter values. Keys are parameter names. Path, query, and header params go by name. For endpoints with a request body, include a body key with the JSON payload.

Example — Get a ticket:

{
  "operationId": "getTicket",
  "params": {
    "ticketId": "12345000000123"
  }
}

Example — Create a ticket:

{
  "operationId": "createTicket",
  "params": {
    "body": {
      "subject": "Printer not working",
      "departmentId": "12345000000006907",
      "contactId": "12345000000042032",
      "description": "The office printer on floor 3 is jammed."
    }
  }
}

Example — Search tickets:

{
  "operationId": "searchTickets",
  "params": {
    "searchStr": "printer",
    "limit": "5"
  }
}

Typical Workflow

User: "How many open tickets are assigned to me?"

LLM calls: search_endpoints(query="list tickets assigned")
LLM calls: call_api(operationId="getAssociatedTickets", params={ "status": "open" })
LLM: "You have 12 open tickets assigned to you. Here are the most recent..."

API Categories

The server indexes 706 endpoints across these 130 categories:

View all categories

Account, AccountAttachment, AccountComments, AccountContactMappingInfo, AccountDeduplication, AccountFollowers, AccountSla, AccountTimeEntry, Activity, Agent, AgentPresence, AgentSignatures, AgentTimeEntry, Article, ArticleAttachment, ArticleComment, ArticleFeedback, ArticleTranslation, AutomationEngine, AutomationFeatureCount, Backup, Badge, BugInteg, BulkImport, BusinessHour, Call, CallComments, Channel, Community, CommunityAttachment, CommunityCategory, CommunityComment, CommunityPreferences, CommunityTopic, CommunityUser, Contact, ContactAttachment, ContactComments, ContactDeduplication, ContactFollowers, ContactProfile, ContactTimeEntry, Contract, CountriesAndLanguages, CustomView, CustomerHappiness, DashboardMetrics, Dashboards, Department, DependencyMappings, DisplayEntity, DomainMapping, EmailFailureAlert, EmailTemplates, EntityBlueprints, Event, EventComments, Field, Finance, Followers, GenericAction, Helpcenter, HelpcenterGroups, HolidayList, IMCannedMessage, IMTemplateMessage, IM_Channel, IM_Message, IM_Metrics, IM_Session, Import, KBRootCategory, KBSection, KbCategory, KbCategoryLogo, Label, Layout, LayoutRuleCriteria, LayoutRules, LicenseFeaturePlan, MailReplyAddress, Module, NewTicketHistory, Organization, PendingApproval, Permalink, PinnedConversation, Product, ProductAttachment, Profile, Recyclebin, ReportIntegration, Role, RoutingPreference, RuleGroup, Search, SharingRule, Skill, SkillConfiguration, SkillType, SubjectAccessRequest, SupportEmailDomain, SupportPlan, Task, TaskAttachment, TaskComments, TaskTimeEntry, TaskTimer, Team, TemplateFolders, Thread, Ticket, TicketApprovals, TicketAttachment, TicketComment, TicketCount, TicketFollowers, TicketTag, TicketTemplate, TicketTimeEntry, TicketTimer, TimeTracking, Upload, User, ValidationRuleCriteria, ValidationRules, Webhook, Widget, blueprintTransitions, blueprints

Testing

bun test

Runs 70 tests covering:

• $ref resolution (local and cross-file)
• OAS type parsing
• Parameter resolution and request body detection
• Operation collection and deduplication
• URL building with path/query/header params
• Tool description generation
• Search and category filtering
• Integration tests against all 155 OAS files (validates all 706 endpoints)

Project Structure

desk_mcp/
  index.ts          # MCP server — loads OAS specs, registers 3 tools
  index.test.ts     # Test suite (70 tests)
  OAS/              # OpenAPI 3.1 spec files (155 JSON files)
    Ticket.json
    Agent.json
    Contact.json
    Common.json     # Shared components ($ref target)
    ...
  package.json
  tsconfig.json