# contacts_create_contact_relationship A write tool on the ServiceTitan MCP Server MCP server. Agent View of the PolicyLayer registry record for `contacts_create_contact_relationship`. HTML page: https://policylayer.com/tools/jordandalton-servicetitanmcpserver/contacts-create-contact-relationship ## Facts - Tool: `contacts_create_contact_relationship` - Server: ServiceTitan MCP Server (`jordandalton/servicetitanmcpserver`) — https://policylayer.com/tools/jordandalton-servicetitanmcpserver.md - Homepage: https://github.com/JordanDalton/ServiceTitanMcpServer - Risk category: Write (Medium risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Rate-limited ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "contacts_create_contact_relationship", "arguments": {} } } ``` ## Why contacts_create_contact_relationship is rated Medium The tool creates a new relationship record between contacts, which is a reversible write operation. It modifies the contact relationship data but does not delete or execute arbitrary code. Severity is medium because creating contact relationships in a business management system could affect business logic and reporting if misused by an AI agent, but the effect is limited to contact data and can be corrected. From the tool's own definition: "Tool name 'contacts_create_contact_relationship' contains 'create', which indicates data creation. No description provided, but the naming convention follows the pattern of other write operations on this ServiceTitan MCP server (e.g., 'adjustments_update')." ## Use case AI agents use contacts_create_contact_relationship to create or update resources in ServiceTitan MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ServiceTitan MCP Server environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches ServiceTitan MCP Server: ```json { "version": "1", "default": "deny", "tools": { "contacts_create_contact_relationship": { "limits": [ { "counter": "contacts_create_contact_relationship_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on ServiceTitan MCP Server (453) - `appointments_delete` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/appointments-delete.md - `appointments_remove_hold` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/appointments-remove-hold.md - `bulk_tags_remove_tags` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/bulk-tags-remove-tags.md - `categories_delete` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/categories-delete.md - `contact_methods_DeleteContactMethod` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/contact-methods-deletecontactmethod.md - `contacts_deletecontact` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/contacts-deletecontact.md - `contacts_deletecontactrelationship` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/contacts-deletecontactrelationship.md - `customers_delete_contact` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/customers-delete-contact.md - `customers_delete_note` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/customers-delete-note.md - `customers_delete_tag` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/customers-delete-tag.md - `DiscountAndFees_Delete` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/discountandfees-delete.md - `equipment_delete` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/equipment-delete.md - `estimates_delete_item` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/estimates-delete-item.md - `gross_pay_items_delete` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/gross-pay-items-delete.md - `invoices_delete_invoice_item` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/invoices-delete-invoice-item.md - `jobs_cancel` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/jobs-cancel.md - `jobs_remove_cancellation` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/jobs-remove-cancellation.md - `locations_delete_contact` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/locations-delete-contact.md - `locations_delete_note` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/locations-delete-note.md - `locations_delete_tag` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/locations-delete-tag.md - `materials_delete` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/materials-delete.md - `non_job_appointments_delete` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/non-job-appointments-delete.md - `purchase_orders_cancel` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/purchase-orders-cancel.md - `purchase_orders_markup_delete` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/purchase-orders-markup-delete.md - `receipts_cancelreceipts` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/receipts-cancelreceipts.md - `returns_cancel` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/returns-cancel.md - `services_delete` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/services-delete.md - `suppressions_remove` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/suppressions-remove.md - `team_delete` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/team-delete.md - `technician_shifts_bulk_delete` — Destructive — https://policylayer.com/tools/jordandalton-servicetitanmcpserver/technician-shifts-bulk-delete.md - …and 423 more: https://policylayer.com/tools/jordandalton-servicetitanmcpserver.md ## For agents This record is a snapshot. Live verdicts and the full registry: - Check every server in your MCP config at once: `npx -y policylayer stack` - Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md) - Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events` --- Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=jordandalton-servicetitanmcpserver · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/jordandalton-servicetitanmcpserver