# update_contact Update an existing contact Agent View of the PolicyLayer registry record for `update_contact`. HTML page: https://policylayer.com/tools/trekmail-mcp-server/update-contact ## Facts - Tool: `update_contact` - Server: TrekMail MCP Server (`trekmail/mcp-server`) — https://policylayer.com/tools/trekmail-mcp-server.md - Homepage: https://github.com/trekmail/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": "update_contact", "arguments": {} } } ``` ## Why update_contact is rated Medium The tool creates or modifies data reversibly—updating contact information is a Write operation. It is not destructive (contact is not deleted), not executable code, and has no financial impact. The severity is medium because unauthorized updates to contact information could cause misdirected communications, but the effect is reversible and limited to a single contact record unless bulk actions are chained. From the tool's own definition: "Tool name 'update_contact' and description 'Update an existing contact' directly indicate modification of existing data (contact records)." ## Use case AI agents use update_contact to create or update resources in TrekMail MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your TrekMail MCP Server environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches TrekMail MCP Server: ```json { "version": "1", "default": "deny", "tools": { "update_contact": { "limits": [ { "counter": "update_contact_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on TrekMail MCP Server (247) - `bulk_action` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/bulk-action.md - `cancel_bulk_migration` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/cancel-bulk-migration.md - `cancel_migration` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/cancel-migration.md - `cancel_scheduled` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/cancel-scheduled.md - `change_mailbox_password` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/change-mailbox-password.md - `confirm_delete_intent` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/confirm-delete-intent.md - `create_delete_intent` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/create-delete-intent.md - `delete_alias` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-alias.md - `delete_bulk_migration` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-bulk-migration.md - `delete_calendar_event` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-calendar-event.md - `delete_cloudflare_token` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-cloudflare-token.md - `delete_contact` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-contact.md - `delete_contact_group` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-contact-group.md - `delete_domain` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-domain.md - `delete_domain_smtp_profile` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-domain-smtp-profile.md - `delete_external_account` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-external-account.md - `delete_folder` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-folder.md - `delete_forwarding_address` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-forwarding-address.md - `delete_identity` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-identity.md - `delete_mail_rule` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-mail-rule.md - `delete_message` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-message.md - `delete_migration` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-migration.md - `delete_smtp_connection` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-smtp-connection.md - `delete_template` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/delete-template.md - `drive_bulk_purge` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/drive-bulk-purge.md - `drive_bulk_trash` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/drive-bulk-trash.md - `drive_device_revoke` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/drive-device-revoke.md - `drive_file_purge` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/drive-file-purge.md - `drive_file_trash` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/drive-file-trash.md - `drive_folder_purge` — Destructive — https://policylayer.com/tools/trekmail-mcp-server/drive-folder-purge.md - …and 217 more: https://policylayer.com/tools/trekmail-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=trekmail-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/trekmail-mcp-server