servicenow-cmdb-mcp 0.1.2

MCP server connecting Claude to ServiceNow CMDB via natural language

ServiceNow CMDB MCP Server

A Python MCP server that connects AI assistants (Claude Code, Claude Desktop) to a ServiceNow CMDB instance via natural language. Enables querying, dependency analysis, health auditing, CI lifecycle management, and configurable inspection — all through the Model Context Protocol.

What makes this different

• Deep CMDB focus with relationship traversal, health auditing, and dependency mapping
• Dynamic schema powered by the Data Model Navigator plugin (no hardcoded class hierarchies)
• Full configurable inspection (business rules, flows, client scripts, ACLs) with credential redaction
• Discovery, IRE rules, and import set visibility
• Two-phase write confirmation for safe CI mutations
• Tool annotations for smart auto-approval in Claude Code

Requirements

• Python 3.11+
• uv package manager
• ServiceNow instance (Xanadu+) with an OAuth 2.0 application and service account

Setup

1. Clone the repository and install dependencies:

uv sync

2. Copy .env.example to .env and fill in your ServiceNow credentials:

cp .env.example .env

SN_INSTANCE_URL=https://your-instance.service-now.com
SN_CLIENT_ID=your-oauth-client-id
SN_CLIENT_SECRET=your-oauth-client-secret
SN_USERNAME=your-service-account
SN_PASSWORD=your-password

3. Run the server:

uv run servicenow-cmdb-mcp

Claude Code integration

Add to your Claude Code MCP config:

{
  "mcpServers": {
    "servicenow-cmdb": {
      "command": "uv",
      "args": ["run", "servicenow-cmdb-mcp"],
      "cwd": "/path/to/mcp-cmdb"
    }
  }
}

Tools (34 total)

Domain	Tools	Description
Queries	search_cis, query_cis_raw, get_ci_details, count_cis, suggest_table, list_ci_classes, describe_ci_class	Search, inspect, and explore CMDB classes
Relationships	get_ci_relationships, find_related_cis, list_relationship_types, get_dependency_tree, get_impact_summary	Traverse CI relationships and dependencies
Health	find_orphan_cis, find_duplicate_cis, find_stale_cis, cmdb_health_summary	Audit CMDB data quality
Mutations	preview_ci_create, confirm_ci_create, preview_ci_update, confirm_ci_update	Safe two-phase CI writes
Configurables	get_business_rules, get_flows, get_client_scripts, get_acls, analyze_configurables	Inspect automation and security config
Discovery	list_discovery_schedules, get_discovery_status, get_discovery_errors	Monitor discovery operations
IRE	get_identification_rules, get_reconciliation_rules, explain_duplicate	Inspect identification and reconciliation
Imports	list_data_sources, get_import_set_runs, get_transform_errors	Monitor data imports and transforms
Schema	refresh_metadata_cache	Manage cached metadata

Development

# Run unit tests
uv run pytest tests/ -v

# Run smoke tests (requires live ServiceNow instance)
uv run python smoke_tests/smoke_test.py

# Type check
uv run mypy src/

# Lint
uv run ruff check src/

Architecture

See ARCHITECTURE.md for the full design document covering authentication, security, tool patterns, and API usage.

Tech stack

• FastMCP (mcp[cli]) — MCP server framework with decorator-based tool registration
• httpx — Async HTTP client for ServiceNow REST APIs
• pydantic / pydantic-settings — Configuration and validation
• OAuth 2.0 — Password grant against ServiceNow /oauth_token.do
• STDIO transport — Local deployment for Claude Code / Claude Desktop