# discord_add_reaction

Add a reaction emoji to a message.

Agent View of the PolicyLayer registry record for `discord_add_reaction`. HTML page: https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-add-reaction

## Facts

- Tool: `discord_add_reaction`
- Server: Discord MCP Server (`bennettschwartz/discord-mcp`) — https://policylayer.com/tools/bennettschwartz-discord-mcp.md
- Homepage: https://github.com/BennettSchwartz/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

Adding a reaction is a reversible write operation that modifies message state by appending a reaction. It does not retrieve data (Read), execute arbitrary code (Execute), permanently delete content (Destructive), or involve financial transactions (Financial). The blast radius is minimal as reactions are ephemeral user interactions that can be easily removed.

From the tool's own definition: "Tool name 'discord_add_reaction' and description 'Add a reaction emoji to a message' indicate a message modification action that creates a new reaction object."

## Use case

AI agents use discord_add_reaction to create or update resources in Discord MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Discord MCP Server environment.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Discord MCP Server:

```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 MCP Server (57)

- `discord_ban_user` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-ban-user.md
- `discord_bulk_delete_messages` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-bulk-delete-messages.md
- `discord_clear_all_reactions` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-clear-all-reactions.md
- `discord_delete_channel` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-delete-channel.md
- `discord_delete_command` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-delete-command.md
- `discord_delete_emoji` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-delete-emoji.md
- `discord_delete_guild_sticker` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-delete-guild-sticker.md
- `discord_delete_invite` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-delete-invite.md
- `discord_delete_reaction` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-delete-reaction.md
- `discord_delete_role` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-delete-role.md
- `discord_delete_scheduled_event` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-delete-scheduled-event.md
- `discord_kick_member` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-kick-member.md
- `discord_remove_user_reaction` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-remove-user-reaction.md
- `discord_webhook_delete` — Destructive — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-webhook-delete.md
- `discord_trigger_typing` — Execute — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-trigger-typing.md
- `discord_fetch_messages` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-fetch-messages.md
- `discord_gateway_get_events` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-gateway-get-events.md
- `discord_gateway_info` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-gateway-info.md
- `discord_get_member` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-get-member.md
- `discord_get_user` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-get-user.md
- `discord_help` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-help.md
- `discord_list_bans` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-list-bans.md
- `discord_list_channels` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-list-channels.md
- `discord_list_commands` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-list-commands.md
- `discord_list_emojis` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-list-emojis.md
- `discord_list_guild_stickers` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-list-guild-stickers.md
- `discord_list_joined_private_archived_threads` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-list-joined-private-archived-threads.md
- `discord_list_pins` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-list-pins.md
- `discord_list_private_archived_threads` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-list-private-archived-threads.md
- `discord_list_public_archived_threads` — Read — https://policylayer.com/tools/bennettschwartz-discord-mcp/discord-list-public-archived-threads.md
- …and 27 more: https://policylayer.com/tools/bennettschwartz-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`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=bennettschwartz-discord-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/bennettschwartz-discord-mcp