get_user_posts · Reddit MCP Server MCP: Risk & Policy

WHAT IT DOES

What get_user_posts does on Reddit MCP Server

AI agents call get_user_posts to retrieve information from Reddit MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

WHY IT NEEDS A POLICY

Why get_user_posts needs a policy

This tool retrieves user posts from Reddit with no side effects. It queries existing data without creating, modifying, deleting, or executing operations. The incomplete description lowers confidence slightly, but the name pattern ('get_*') and sibling tools (all get_* variants are Read operations) strongly suggest read-only functionality.

From the tool's definition Tool name 'get_user_posts' and server description stating 'fetching posts' and 'supports read-only mode'. The tool description is incomplete/uninformative ('Obtenir l') but the name and context clearly indicate data retrieval without modification.

Attacks that exploit this kind of access

Questions about get_user_posts

What does the get_user_posts tool do? +

Obtenir l. It is categorised as a Read tool in the Reddit MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_user_posts? +

Register the Reddit MCP Server MCP server in PolicyLayer and add a rule for get_user_posts: 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 MCP Server. Nothing to install.

What risk level is get_user_posts? +

get_user_posts is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_user_posts? +

Yes. Add a rate_limit block to the get_user_posts 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.

How do I block get_user_posts completely? +

Set action: deny in the PolicyLayer policy for get_user_posts. 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.

What MCP server provides get_user_posts? +

get_user_posts is provided by the Reddit MCP Server MCP server (samy-clivolt/reddit-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.