Delete a custom field
AI agents call deleteCustomField 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.
This tool irreversibly deletes data (a custom field) from the CRM system. Deletion cannot be undone without manual restoration or backups. This is a destructive action that could remove important business field definitions and associated data. High severity due to potential impact on CRM data integrity and business workflows dependent on that field.
From the tool's definition Tool name is 'deleteCustomField' with description 'Delete a custom field'. The verb 'delete' indicates irreversible removal of data.
Attacks that exploit this kind of access
Delete a 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 deleteCustomField: 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.
deleteCustomField 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 deleteCustomField 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 deleteCustomField. 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.
deleteCustomField 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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