# list_custom_fields List all custom field definitions sorted by display order Agent View of the PolicyLayer registry record for `list_custom_fields`. HTML page: https://policylayer.com/tools/instantkom-mcp-server/list-custom-fields ## Facts - Tool: `list_custom_fields` - Server: instantKOM MCP Server (`instantkom/mcp-server`) — https://policylayer.com/tools/instantkom-mcp-server.md - Homepage: https://github.com/instantKOM/mcp-server - Risk category: Read (Low risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Allowed ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "list_custom_fields", "arguments": {} } } ``` ## Why list_custom_fields is rated Low This tool retrieves metadata about custom field definitions. It performs a read-only operation that returns existing configuration data without modifying, executing code, deleting, or moving money. The sorted list is informational only. This falls squarely into the Read category with low severity since enumeration of field definitions poses minimal risk even if accessed unexpectedly by an AI agent. From the tool's own definition: "The tool name 'list_custom_fields' and description 'List all custom field definitions sorted by display order' clearly indicate a query/retrieval operation with no side effects." ## Use case AI agents call list_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. ## Recommended policy (PolicyLayer) Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches instantKOM MCP Server: ```json { "version": "1", "default": "deny", "tools": { "list_custom_fields": {} } } ``` ## Other tools on instantKOM MCP Server (244) - `bulk_delete_custom_fields` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/bulk-delete-custom-fields.md - `delete_account` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-account.md - `delete_api_key` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-api-key.md - `delete_bot` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-bot.md - `delete_bot_env_var` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-bot-env-var.md - `delete_bot_env_var_value` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-bot-env-var-value.md - `delete_bot_filter` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-bot-filter.md - `delete_broadcast` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-broadcast.md - `delete_broadcast_media` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-broadcast-media.md - `delete_chat` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-chat.md - `delete_contact` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-contact.md - `delete_contact_custom_field_value` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-contact-custom-field-value.md - `delete_custom_field` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-custom-field.md - `delete_export` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-export.md - `delete_feed` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-feed.md - `delete_flow` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-flow.md - `delete_flow_edge` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-flow-edge.md - `delete_flow_node` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-flow-node.md - `delete_message` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-message.md - `delete_message_media` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-message-media.md - `delete_object_folder` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-object-folder.md - `delete_poll` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-poll.md - `delete_poll_option` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-poll-option.md - `delete_qr_code` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-qr-code.md - `delete_segmentation` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-segmentation.md - `delete_short_link` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-short-link.md - `delete_super_widget` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-super-widget.md - `delete_tag` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-tag.md - `delete_team_member_by_id` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-team-member-by-id.md - `delete_template` — Destructive — https://policylayer.com/tools/instantkom-mcp-server/delete-template.md - …and 214 more: https://policylayer.com/tools/instantkom-mcp-server.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=instantkom-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/instantkom-mcp-server