# show_roles Show all roles in the database (MySQL 8.0+). Agent View of the PolicyLayer registry record for `show_roles`. HTML page: https://policylayer.com/tools/mukul975-mysql-mcp-server/show-roles ## Facts - Tool: `show_roles` - Server: Mysql (`mukul975/mysql-mcp-server`) — https://policylayer.com/tools/mukul975-mysql-mcp-server.md - Homepage: https://github.com/mukul975/mysql-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": "show_roles", "arguments": {} } } ``` ## Why show_roles is rated Low This tool performs a read-only operation that queries and displays existing roles. It has no capability to create, modify, delete, or execute any changes. The blast radius is minimal as it only exposes informational metadata about database roles. The server description emphasizes 'read-only queries', which aligns with this classification. From the tool's own definition: "Tool name 'show_roles' and description 'Show all roles in the database' indicate a query operation that retrieves role information without modifying any data." ## Use case AI agents call show_roles to retrieve information from Mysql 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 Mysql: ```json { "version": "1", "default": "deny", "tools": { "show_roles": {} } } ``` ## Other tools on Mysql (232) - `drop_event` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/drop-event.md - `drop_partition` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/drop-partition.md - `drop_role` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/drop-role.md - `drop_stored_function` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/drop-stored-function.md - `drop_stored_procedure` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/drop-stored-procedure.md - `mysql_alter_table_drop_column` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-alter-table-drop-column.md - `mysql_delete_data` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-delete-data.md - `mysql_drop_database` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-database.md - `mysql_drop_foreign_key` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-foreign-key.md - `mysql_drop_index` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-index.md - `mysql_drop_primary_key` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-primary-key.md - `mysql_drop_table` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-table.md - `mysql_drop_user` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-user.md - `mysql_drop_view` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-drop-view.md - `mysql_kill_process` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-kill-process.md - `mysql_reset_query_cache` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-reset-query-cache.md - `mysql_revoke_privileges` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-revoke-privileges.md - `mysql_truncate_table` — Destructive — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-truncate-table.md - `create_event` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/create-event.md - `create_stored_procedure` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/create-stored-procedure.md - `mysql_analyze_table` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-analyze-table.md - `mysql_auto_index_rebuild_scheduler` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-auto-index-rebuild-scheduler.md - `mysql_flush_logs` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-flush-logs.md - `mysql_flush_privileges` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-flush-privileges.md - `mysql_flush_tables` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-flush-tables.md - `mysql_lock_tables` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-lock-tables.md - `mysql_optimize_table` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-optimize-table.md - `mysql_repair_table` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-repair-table.md - `mysql_set_variable` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-set-variable.md - `mysql_unlock_tables` — Execute — https://policylayer.com/tools/mukul975-mysql-mcp-server/mysql-unlock-tables.md - …and 202 more: https://policylayer.com/tools/mukul975-mysql-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=mukul975-mysql-mcp-server · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/mukul975-mysql-mcp-server