contacts_create_contact_relationship
A write tool on the ServiceTitan MCP server.
This record as markdown: /tools/jordandalton-servicetitanmcpserver/contacts-create-contact-relationship.md
What contacts_create_contact_relationship does on ServiceTitan MCP Server
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.
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 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').
Attacks that exploit this kind of access
The rule that runs contacts_create_contact_relationship safely
PolicyLayer is an MCP gateway: it sits between your AI agents and ServiceTitan MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For contacts_create_contact_relationship, this is the rule to start with:
contacts_create_contact_relationship stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect ServiceTitan MCP Server, apply this rule, and every contacts_create_contact_relationship call is checked against it from then on.
Questions about contacts_create_contact_relationship
contacts_create_contact_relationship is a write tool on the ServiceTitan MCP Server MCP server. It is categorised as a Write tool in the ServiceTitan MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the ServiceTitan MCP Server MCP server in PolicyLayer and add a rule for contacts_create_contact_relationship: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches ServiceTitan MCP Server. Nothing to install.
contacts_create_contact_relationship is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the contacts_create_contact_relationship rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for contacts_create_contact_relationship. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
contacts_create_contact_relationship is provided by the ServiceTitan MCP Server MCP server (jordandalton/servicetitanmcpserver). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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