Delete a deal custom field
AI agents call deleteDealCustomField to permanently remove resources in Follow Up Boss MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool performs an irreversible deletion of a custom field associated with deals. This cannot be undone and represents data loss. While the blast radius is scoped to a single custom field rather than entire records, the destructive nature of deletion operations places it in the Destructive category, which is more severe than Write.
From the tool's definition Tool name contains 'delete' and description states 'Delete a deal custom field'. This is an irreversible deletion operation that removes data from the CRM system.
Attacks that exploit this kind of access
Delete a deal custom field. It is categorised as a Destructive tool in the Follow Up Boss MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Follow Up Boss MCP Server MCP server in PolicyLayer and add a rule for deleteDealCustomField: 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 Follow Up Boss MCP Server. Nothing to install.
deleteDealCustomField is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the deleteDealCustomField 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 deleteDealCustomField. 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.
deleteDealCustomField is provided by the Follow Up Boss MCP Server MCP server (nerdsnipe-inc/follow-up-boss-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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