This record as markdown: /tools/creativelead-unclick/discord-react.md
What discord_react does on UnClick
AI agents use discord_react to create or update resources in UnClick, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your UnClick environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
emoji | string | — | |
bot_token | string | — | |
channel_id | string | — | |
message_id | string | — |
Parameters from the server's own tool schema.
Why discord_react is rated Medium
Adding a reaction is a write operation that creates new data (the reaction metadata) and modifies message state, but is fully reversible (the reaction can be removed). It is not destructive, does not execute arbitrary code, and has no financial impact. Severity is medium because an AI agent could spam reactions to disrupt communication or harass users, but the blast radius is limited to Discord reactions only.
From the tool's definition Tool description states 'Add a reaction to a Discord message' — this creates a new reaction object/state on an existing message, modifying Discord's data model reversibly.
Attacks that exploit this kind of access
The rule that runs discord_react safely
PolicyLayer is an MCP gateway: it sits between your AI agents and UnClick, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For discord_react, this is the rule to start with:
discord_react stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect UnClick, apply this rule, and every discord_react call is checked against it from then on.
Questions about discord_react
Add a reaction to a Discord message. It is categorised as a Write tool in the UnClick MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
discord_react accepts 4 parameters: emoji, bot_token, channel_id, message_id. The full parameter table on this page comes from the server's own tool schema.
Register the UnClick MCP server in PolicyLayer and add a rule for discord_react: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches UnClick. Nothing to install.
discord_react is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the discord_react rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for discord_react. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
discord_react is provided by the UnClick MCP server (creativelead/unclick). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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