Fetches the list of available link flairs (i.e., post flairs, not user flairs) for a given subreddit.
AI agents call REDDIT_GET_USER_FLAIR to retrieve information from Reddit without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
subreddit | string | — | Name of the subreddit (e.g., 'pics', 'gaming') for which to retrieve available link flairs. |
Parameters from the server's own tool schema.
This tool queries and retrieves metadata about available post flairs in a subreddit. It performs a read-only operation with no side effects, no data modification, and no irreversible actions. The blast radius of misuse is minimal—an AI could at worst enumerate flair options, which is already public information.
From the tool's definition Tool name and description indicate it 'Fetches the list of available link flairs for a given subreddit' - a retrieval operation with no modification, deletion, or execution of commands.
Documented attack patterns abuse exactly the kind of access REDDIT_GET_USER_FLAIR gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Reddit, and nothing reaches the server without passing your rules. This is the rule we recommend for REDDIT_GET_USER_FLAIR:
{
"version": "1",
"default": "deny",
"tools": {
"REDDIT_GET_USER_FLAIR": {}
}
}REDDIT_GET_USER_FLAIR is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Fetches the list of available link flairs (i.e., post flairs, not user flairs) for a given subreddit. It is categorised as a Read tool in the Reddit MCP Server, which means it retrieves data without modifying state.
REDDIT_GET_USER_FLAIR accepts 1 parameter: subreddit. The full parameter table on this page comes from the server's own tool schema.
Register the Reddit MCP server in PolicyLayer and add a rule for REDDIT_GET_USER_FLAIR: 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 Reddit. Nothing to install.
REDDIT_GET_USER_FLAIR is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the REDDIT_GET_USER_FLAIR 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 REDDIT_GET_USER_FLAIR. 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.
REDDIT_GET_USER_FLAIR is provided by the Reddit MCP server (reddit-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 26 Reddit tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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26 Reddit tools catalogued and risk-classified — across an index of 42,500+ MCP servers.