get_contact_custom_fields

Get all custom field values for a specific contact

SERVERinstantKOM MCP Server SOURCEinstantkom/mcp-server

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/instantkom-mcp-server/get-contact-custom-fields.md

WHAT IT DOES

What get_contact_custom_fields does on instantKOM MCP Server

AI agents call get_contact_custom_fields to retrieve information from instantKOM MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

RISK

Why get_contact_custom_fields is rated Low

This tool retrieves custom field values for a contact without modifying, creating, or deleting any data. It is a straightforward query operation that poses minimal risk; the primary concern would be unauthorized access to contact details, but the tool itself does not execute code or cause irreversible changes.

From the tool's definition Tool name includes 'get_' prefix and description states 'Get all custom field values' — these are clear indicators of a read-only retrieval operation with no side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs get_contact_custom_fields 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 get_contact_custom_fields, this is the rule to start with:

get_contact_custom_fields Allowed

get_contact_custom_fields is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_contact_custom_fields": {}
  }
}

ALLOW ONLY 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 get_contact_custom_fields call is checked against it from then on.

FAQ

Questions about get_contact_custom_fields

What does the get_contact_custom_fields tool do? +

Get all custom field values for a specific contact. It is categorised as a Read tool in the instantKOM MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_contact_custom_fields? +

Register the instantKOM MCP Server MCP server in PolicyLayer and add a rule for get_contact_custom_fields: 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 get_contact_custom_fields? +

get_contact_custom_fields is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_contact_custom_fields? +

Yes. Add a rate_limit block to the get_contact_custom_fields 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 get_contact_custom_fields completely? +

Set action: deny in the PolicyLayer policy for get_contact_custom_fields. 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 get_contact_custom_fields? +

get_contact_custom_fields 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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