delete_contact_custom_field_value

Remove the value of a custom field for a specific contact

SERVERinstantKOM MCP Server SOURCEinstantkom/mcp-server

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/instantkom-mcp-server/delete-contact-custom-field-value.md

WHAT IT DOES

What delete_contact_custom_field_value does on instantKOM MCP Server

AI agents call delete_contact_custom_field_value to permanently remove resources in instantKOM MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why delete_contact_custom_field_value is rated Critical

This tool performs an irreversible deletion of a custom field value tied to a contact. While scoped to a single field value (not a full contact deletion), it permanently removes data that cannot be recovered without external backup or restoration. This fits the Destructive category as defined—actions that cannot be undone.

From the tool's definition Tool name contains 'delete' and description states 'Remove the value of a custom field for a specific contact'. The action irreversibly removes data associated with a contact record.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs delete_contact_custom_field_value safely

PolicyLayer is an MCP gateway: it sits between your AI agents and instantKOM MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For delete_contact_custom_field_value, this is the rule to start with:

delete_contact_custom_field_value Hidden

delete_contact_custom_field_value is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_contact_custom_field_value"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect instantKOM MCP Server, apply this rule, and every delete_contact_custom_field_value call is checked against it from then on.

FAQ

Questions about delete_contact_custom_field_value

What does the delete_contact_custom_field_value tool do? +

Remove the value of a custom field for a specific contact. It is categorised as a Destructive tool in the instantKOM MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_contact_custom_field_value? +

Register the instantKOM MCP Server MCP server in PolicyLayer and add a rule for delete_contact_custom_field_value: 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 instantKOM MCP Server. Nothing to install.

What risk level is delete_contact_custom_field_value? +

delete_contact_custom_field_value is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_contact_custom_field_value? +

Yes. Add a rate_limit block to the delete_contact_custom_field_value 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.

How do I block delete_contact_custom_field_value completely? +

Set action: deny in the PolicyLayer policy for delete_contact_custom_field_value. 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.

What MCP server provides delete_contact_custom_field_value? +

delete_contact_custom_field_value is provided by the instantKOM MCP Server MCP server (instantkom/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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