# discord_add_reaction Add a reaction to a message Agent View of the PolicyLayer registry record for `discord_add_reaction`. HTML page: https://policylayer.com/tools/arrrnmp-discord-mcp/discord-add-reaction ## Facts - Tool: `discord_add_reaction` - Server: Discord (`arrrnmp/discord-mcp`) — https://policylayer.com/tools/arrrnmp-discord-mcp.md - Homepage: https://github.com/arrrnmp/discord-mcp - 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": "discord_add_reaction", "arguments": {} } } ``` ## Why discord_add_reaction is rated Medium This tool creates new data (a reaction) in a reversible manner. It does not delete, execute arbitrary code, move money, or have destructive consequences. Adding a reaction is a standard write operation that can be undone by removing the reaction. Severity is low because reactions are cosmetic metadata with minimal impact on the Discord server state. From the tool's own definition: "Tool name 'discord_add_reaction' and description 'Add a reaction to a message' indicate a modification action that creates a reaction (emoji) on an existing message." ## Use case AI agents use discord_add_reaction to create or update resources in Discord, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Discord environment. ## Recommended policy (PolicyLayer) Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Discord: ```json { "version": "1", "default": "deny", "tools": { "discord_add_reaction": { "limits": [ { "counter": "discord_add_reaction_rate", "window": "minute", "max": 30, "scope": "grant" } ] } } } ``` ## Other tools on Discord (125) - `discord_ban_member` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-ban-member.md - `discord_begin_guild_prune` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-begin-guild-prune.md - `discord_bulk_ban_members` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-bulk-ban-members.md - `discord_clear_emoji_reactions` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-clear-emoji-reactions.md - `discord_clear_reactions` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-clear-reactions.md - `discord_delete_application_emoji` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-application-emoji.md - `discord_delete_automod_rule` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-automod-rule.md - `discord_delete_channel` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-channel.md - `discord_delete_channel_permission_overwrite` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-channel-permission-overwrite.md - `discord_delete_guild_emoji` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-guild-emoji.md - `discord_delete_guild_soundboard_sound` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-guild-soundboard-sound.md - `discord_delete_guild_sticker` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-guild-sticker.md - `discord_delete_guild_template` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-guild-template.md - `discord_delete_invite` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-invite.md - `discord_delete_message` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-message.md - `discord_delete_role` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-role.md - `discord_delete_scheduled_event` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-scheduled-event.md - `discord_delete_stage_instance` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-stage-instance.md - `discord_delete_thread` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-thread.md - `discord_delete_webhook` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-webhook.md - `discord_delete_webhook_message_by_token` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-delete-webhook-message-by-token.md - `discord_kick_member` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-kick-member.md - `discord_purge_messages` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-purge-messages.md - `discord_remove_own_reaction` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-remove-own-reaction.md - `discord_remove_thread_member` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-remove-thread-member.md - `discord_remove_user_reaction` — Destructive — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-remove-user-reaction.md - `discord_execute_webhook_by_token` — Execute — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-execute-webhook-by-token.md - `discord_set_member_voice_state` — Execute — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-set-member-voice-state.md - `discord_fetch_guild_ban` — Read — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-fetch-guild-ban.md - `discord_fetch_member` — Read — https://policylayer.com/tools/arrrnmp-discord-mcp/discord-fetch-member.md - …and 95 more: https://policylayer.com/tools/arrrnmp-discord-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=arrrnmp-discord-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/arrrnmp-discord-mcp