# get_msg Get message details Agent View of the PolicyLayer registry record for `get_msg`. HTML page: https://policylayer.com/tools/1021143806-napcat-mcp/get-msg ## Facts - Tool: `get_msg` - Server: NapCat MCP Server (`1021143806/napcat_mcp`) — https://policylayer.com/tools/1021143806-napcat-mcp.md - Homepage: https://github.com/1021143806/napcat_mcp - 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": "get_msg", "arguments": {} } } ``` ## Why get_msg is rated Low This tool retrieves message information from the QQ bot system. It performs a read-only query operation that fetches existing data without creating, modifying, deleting, or executing any operations. The classification as 'Read' is appropriate because the tool simply retrieves message details. From the tool's own definition: "Tool name 'get_msg' with description 'Get message details' indicates retrieval of existing message data without modification or side effects." ## Use case AI agents call get_msg to retrieve information from NapCat 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 NapCat MCP Server: ```json { "version": "1", "default": "deny", "tools": { "get_msg": {} } } ``` ## Other tools on NapCat MCP Server (56) - `delete_essence_msg` — Destructive — https://policylayer.com/tools/1021143806-napcat-mcp/delete-essence-msg.md - `delete_group_file` — Destructive — https://policylayer.com/tools/1021143806-napcat-mcp/delete-group-file.md - `delete_msg` — Destructive — https://policylayer.com/tools/1021143806-napcat-mcp/delete-msg.md - `set_group_kick` — Destructive — https://policylayer.com/tools/1021143806-napcat-mcp/set-group-kick.md - `set_group_ban` — Execute — https://policylayer.com/tools/1021143806-napcat-mcp/set-group-ban.md - `set_group_whole_ban` — Execute — https://policylayer.com/tools/1021143806-napcat-mcp/set-group-whole-ban.md - `can_send_image` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/can-send-image.md - `can_send_record` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/can-send-record.md - `get_cookies` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-cookies.md - `get_credentials` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-credentials.md - `get_csrf_token` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-csrf-token.md - `get_essence_msg_list` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-essence-msg-list.md - `get_forward_msg` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-forward-msg.md - `get_friend_list` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-friend-list.md - `get_friend_msg_history` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-friend-msg-history.md - `get_group_announcement_list` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-announcement-list.md - `get_group_at_all_remain` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-at-all-remain.md - `get_group_file_system_info` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-file-system-info.md - `get_group_file_url` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-file-url.md - `get_group_files_by_folder` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-files-by-folder.md - `get_group_honor_info` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-honor-info.md - `get_group_ignore_add_request` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-ignore-add-request.md - `get_group_info` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-info.md - `get_group_info_ex` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-info-ex.md - `get_group_list` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-list.md - `get_group_member_info` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-member-info.md - `get_group_member_list` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-member-list.md - `get_group_msg_history` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-msg-history.md - `get_group_root_files` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-root-files.md - `get_group_system_msg` — Read — https://policylayer.com/tools/1021143806-napcat-mcp/get-group-system-msg.md - …and 26 more: https://policylayer.com/tools/1021143806-napcat-mcp.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=1021143806-napcat-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/1021143806-napcat-mcp