# set_contact_custom_fields Set multiple custom field values for a contact at once Agent View of the PolicyLayer registry record for `set_contact_custom_fields`. HTML page: https://policylayer.com/tools/instantkom-mcp-server/set-contact-custom-fields ## Facts - Tool: `set_contact_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: Write (Medium risk) - Registry record: grade F, identity unverified - Server rate-limited: no - Parameters: 0 - Recommended policy verdict: Rate-limited ## Example call (MCP tools/call, JSON-RPC 2.0) ```json { "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "set_contact_custom_fields", "arguments": {} } } ``` ## Why set_contact_custom_fields is rated Medium This tool modifies contact records by updating custom fields, which is a write operation (creates/modifies data reversibly). Severity is medium because while the changes affect user contact data, they are reversible and do not involve deletion, financial transactions, or code execution. Confidence is high due to the clear semantic of 'set' and 'custom field values' indicating a data update operation. From the tool's own definition: "Tool sets/modifies custom field values for a contact via 'set' action, which creates or updates contact metadata. The description explicitly states it sets 'multiple custom field values', indicating reversible data modification." ## Use case AI agents use set_contact_custom_fields to create or update resources in instantKOM MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your instantKOM MCP Server environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches instantKOM MCP Server: ```json { "version": "1", "default": "deny", "tools": { "set_contact_custom_fields": { "limits": [ { "counter": "set_contact_custom_fields_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## 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