⏰ TimeZest MCP Server

Bring your TimeZest scheduling data directly into Claude through the Model Context Protocol (MCP). Perform real-time appointment lookups, engineer briefings, and ticket-linked schedule management — all with natural language.

Registry ID: io.github.sagarkalra-tech/timezest-mcp

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🌟 Why TimeZest MCP?

If you manage a team that uses TimeZest with ConnectWise, you know the pain: toggling between tabs, manually checking who's booked, chasing unbooked scheduling requests, and cross-referencing ticket numbers.

This MCP server turns Claude into a scheduling assistant that can:

• 🗓️ Give you a morning briefing of today's confirmed appointments grouped by engineer
• 🔍 Find appointments by ticket number — just say "find appointments for ticket #964400"
• ⏳ Surface aging unbooked requests that need follow-up
• 📊 Generate aggregate scheduling stats across your team
• 🕐 Handle timezone-accurate reporting across global MSP teams

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🚀 Get Started in 30 Seconds

Prerequisites

• Node.js 20+ — Download here
• TimeZest API Key — Found in TimeZest → Settings → API

Option 1: Claude Desktop (Recommended)

Add this to your Claude Desktop configuration file:

• Windows: %APPDATA%\Claude\claude_desktop_config.json
• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "timezest": {
      "command": "npx",
      "args": ["-y", "timezest-mcp@latest"],
      "env": {
        "TIMEZEST_API_KEY": "your-timezest-api-key-here"
      }
    }
  }
}

Restart Claude Desktop. You're done.

Option 2: Claude Code CLI

claude mcp add-json timezest-mcp '{
  "command": "npx",
  "args": ["-y", "timezest-mcp@latest"],
  "env": {
    "TIMEZEST_API_KEY": "your-timezest-api-key-here"
  }
}'

Option 3: VS Code (Copilot)

Add to your .vscode/settings.json or User Settings:

{
  "mcp": {
    "servers": {
      "timezest": {
        "command": "npx",
        "args": ["-y", "timezest-mcp@latest"],
        "env": {
          "TIMEZEST_API_KEY": "your-timezest-api-key-here"
        }
      }
    }
  }
}

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🛠️ Available Tools

The server exposes 8 specialized tools that Claude can call:

Tool	Description	Key Parameters
get_todays_appointments	Morning briefing — today's confirmed appointments grouped by engineer, plus pending unbooked requests	timezone
list_appointments	Flexible query across any date range with optional filters	start_date, end_date, engineer_name, status
get_engineer_schedule	All upcoming appointments for a specific engineer, sorted by time	engineer_name, days_ahead, include_pending
list_pending_requests	Unbooked invitations (sent/new) with age tracking in hours/days	days_back, engineer_name, older_than_hours
find_appointment_by_ticket	Find appointments linked to a ConnectWise ticket number	ticket_number (e.g., 964400 or #964400)
get_appointment_types	List all appointment type definitions configured in TimeZest	—
get_appointment_stats	Aggregate summary: counts by status, by engineer, today's load, oldest pending	days_back, days_forward
list_cancelled_appointments	Cancelled requests with scheduling URLs for rebooking	days_back, engineer_name

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💬 Example Prompts

Once connected, just talk to Claude naturally:

"Who are my top engineers today and what are they booked for?"

"Find any TimeZest requests for ticket #964400."

"Give me a morning briefing of today's confirmed vs. unbooked requests."

"Show me all pending scheduling requests older than 48 hours."

"What's the scheduling volume breakdown for the last two weeks?"

"Pull up Sarah's schedule for the next 5 days."

"List all cancelled appointments from last week — any we should rebook?"

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⚙️ Configuration

Environment Variable	Required	Default	Purpose
TIMEZEST_API_KEY	Yes	—	Your TimeZest Bearer token (Settings → API)
TIMEZEST_DEFAULT_TZ	No	America/Chicago	Default IANA timezone for localized display strings
TIMEZEST_WINDOW_DAYS_BACK	No	14	How many days back to fetch scheduling requests
TIMEZEST_WINDOW_DAYS_FORWARD	No	30	How many days forward to fetch scheduling requests

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🏗️ Architecture

┌─────────────────────────────────────────────────────────────────┐
│                        MCP CLIENT (Claude)                      │
│        Desktop App  •  Claude Code CLI  •  IDE Plugin           │
└──────────────────────────┬──────────────────────────────────────┘
                           │ Stdio (JSON-RPC)
┌──────────────────────────▼──────────────────────────────────────┐
│                     TIMEZEST MCP SERVER                         │
│                                                                 │
│  ┌──────────────┐  ┌──────────────┐                             │
│  │ Tool Handler │  │  MCP SDK     │  (index.ts)                 │
│  │ (8 Tools)    │  │  Registry    │                             │
│  └──────┬───────┘  └──────────────┘                             │
│         │                                                       │
│  ┌──────▼────────────────────────────────────────────────────┐  │
│  │                 TIMEZEST API CLIENT                        │  │
│  │  Pagination • Retry Logic • Rate Limit Management         │  │
│  └──────────────────────┬────────────────────────────────────┘  │
│                         │ (client.ts)                            │
│  ┌──────────────────────▼────────────────────────────────────┐  │
│  │               DATA TRANSFORMATION LAYER                    │  │
│  │  Timezone Math • Engineer Mapping • Ticket Linking         │  │
│  └────────────────────────────────────────────────────────────┘  │
│                         │ (utils/)                               │
└─────────────────────────┼────────────────────────────────────────┘
                          │ HTTPS / REST
┌─────────────────────────▼──────────────────────────────────────┐
│                      TIMEZEST API (v1)                          │
│       Scheduling Requests • Appointment Types • Resources       │
└─────────────────────────────────────────────────────────────────┘

Key Design Decisions

• Read-Only: Intentionally kept read-only — no mutations to your scheduling data
• Resilient Client: Exponential backoff with automatic Retry-After header support for 429/5xx errors
• Deep Pagination: Recursively crawls all pages (50-item chunks) to build complete datasets
• Timezone Precision: Converts Unix timestamps to strict ISO with localized display strings using IANA timezone identifiers
• Engineer Resolution: Uses a "highest-confidence" search — checks scheduled_agents first, then falls back to resources
• Warm Cache: Appointment types are cached after first fetch to reduce API overhead

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🧪 Testing

The server ships with a comprehensive Vitest test suite — 22 tests across 3 files:

Test File	Tests	Coverage
transform.test.ts	8	Engineer resolution, ticket extraction, timezone conversion, graceful handling of missing fields
filter.test.ts	6	Case-insensitive partial matching, team name matching, date-range filtering
client.test.ts	8	Appointment type caching, pagination, retry on 429/5xx, no-retry on 4xx

All tests use mocked API responses — no live API calls, no secrets needed.

npm test            # Single run
npm run test:watch  # Re-runs on file save

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🔒 Security & Trust

• NPM Provenance: Every release is cryptographically signed via GitHub Actions OIDC
• CI/CD Pipeline: Automated build → test → publish on tagged releases (no manual npm publish)
• No Secrets in CI: Tests require no API keys — fully deterministic with mocked responses
• Node.js Matrix: Tested on Node 20 (LTS) and 22 (Current)

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📦 Distribution

Channel	Link
NPM	timezest-mcp
MCP Registry	io.github.sagarkalra-tech/timezest-mcp
GitHub	sagarkalra-tech/TimeZest-MCP

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🤝 Contributing

1. Fork the repository
2. Create a feature branch (git checkout -b feat/my-feature)
3. Make your changes and ensure tests pass (npm test)
4. Submit a pull request

See ARCHITECTURE.md for a deep dive into the data flow, component design, and transformation logic.

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📄 License

MIT © 2026 Sagar Kalra