Get posts submitted by a user
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.
This tool retrieves historical posts from a user's profile, which is a read-only query operation. No data is created, modified, deleted, or destroyed. The only potential risk is exposure of publicly available Reddit user data, which is low severity in the context of standard social media API access.
From the tool's definition Tool name 'get_user_posts' and description 'Get posts submitted by a user' indicate data retrieval with no modification or side effects.
Attacks that exploit this kind of access
Get posts submitted by a user. It is categorised as a Read tool in the Reddit MCP Server MCP Server, which means it retrieves data without modifying state.
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.
get_user_posts 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 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.
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.
get_user_posts is provided by the Reddit MCP Server MCP server (liuyang1520/reddit-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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