# crm_create_contact_property Create a new contact property Agent View of the PolicyLayer registry record for `crm_create_contact_property`. HTML page: https://policylayer.com/tools/blacksand-software-hubspot-mcp/crm-create-contact-property ## Facts - Tool: `crm_create_contact_property` - Server: HubSpot MCP (`blacksand-software/hubspot-mcp`) — https://policylayer.com/tools/blacksand-software-hubspot-mcp.md - Homepage: https://github.com/BlackSand-Software/hubspot-mcp - 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": "crm_create_contact_property", "arguments": {} } } ``` ## Why crm_create_contact_property is rated Medium This tool creates a new contact property (a data schema field), which is a reversible write operation. It modifies the structure of contact records but does not delete data, execute arbitrary code, or move money. The blast radius is medium because misconfigured properties could impact data quality or compliance across many contacts, but the action is reversible through property deletion or updates. From the tool's own definition: "Tool name 'crm_create_contact_property' and description 'Create a new contact property' indicate data creation/modification. Creates a new property schema in the CRM system." ## Use case AI agents use crm_create_contact_property to create or update resources in HubSpot MCP, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your HubSpot MCP environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches HubSpot MCP: ```json { "version": "1", "default": "deny", "tools": { "crm_create_contact_property": { "limits": [ { "counter": "crm_create_contact_property_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on HubSpot MCP (110) - `calls_archive` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/calls-archive.md - `calls_batch_archive` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/calls-batch-archive.md - `crm_batch_delete_associations` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/crm-batch-delete-associations.md - `crm_batch_delete_objects` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/crm-batch-delete-objects.md - `crm_delete_association` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/crm-delete-association.md - `crm_delete_object` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/crm-delete-object.md - `emails_archive` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/emails-archive.md - `emails_batch_archive` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/emails-batch-archive.md - `engagement_details_delete` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/engagement-details-delete.md - `meetings_batch_archive` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/meetings-batch-archive.md - `meetings_delete` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/meetings-delete.md - `notes_archive` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/notes-archive.md - `notes_batch_archive` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/notes-batch-archive.md - `products_archive` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/products-archive.md - `products_batch_archive` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/products-batch-archive.md - `tasks_archive` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/tasks-archive.md - `tasks_batch_archive` — Destructive — https://policylayer.com/tools/blacksand-software-hubspot-mcp/tasks-batch-archive.md - `calls_batch_read` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/calls-batch-read.md - `calls_get` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/calls-get.md - `calls_list` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/calls-list.md - `calls_search` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/calls-search.md - `communications_get_preferences` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/communications-get-preferences.md - `communications_get_subscription_definitions` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/communications-get-subscription-definitions.md - `communications_get_subscription_status` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/communications-get-subscription-status.md - `crm_get_associations` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/crm-get-associations.md - `crm_get_company` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/crm-get-company.md - `crm_get_company_properties` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/crm-get-company-properties.md - `crm_get_contact` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/crm-get-contact.md - `crm_get_contact_properties` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/crm-get-contact-properties.md - `crm_get_lead` — Read — https://policylayer.com/tools/blacksand-software-hubspot-mcp/crm-get-lead.md - …and 80 more: https://policylayer.com/tools/blacksand-software-hubspot-mcp.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=blacksand-software-hubspot-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/blacksand-software-hubspot-mcp