Retrieves all comments for a Reddit post given its article ID (which must be for an existing, public post); nested replies within comments are returned as raw dictionaries requiring parsing.
AI agents call REDDIT_RETRIEVE_POST_COMMENTS 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 |
|---|---|---|---|
article | string | — | Base-36 ID of the Reddit post (e.g., 'q5u7q5'), typically found in the post's URL and not including the 't3_' prefix. |
Parameters from the server's own tool schema.
This tool queries and returns existing data (comments on a post) without side effects. No content is created, modified, deleted, or executed. It is a straightforward read operation. Although the server supports write/destructive operations, this specific tool is purely informational retrieval, posing minimal risk even if misused by an agent—it would simply fetch publicly available comments.
From the tool's definition Tool name contains 'RETRIEVE' and description states 'Retrieves all comments' with no modification, deletion, or execution capability. Returns data only ('raw dictionaries requiring parsing').
Documented attack patterns abuse exactly the kind of access REDDIT_RETRIEVE_POST_COMMENTS 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_RETRIEVE_POST_COMMENTS:
{
"version": "1",
"default": "deny",
"tools": {
"REDDIT_RETRIEVE_POST_COMMENTS": {}
}
}REDDIT_RETRIEVE_POST_COMMENTS is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Retrieves all comments for a Reddit post given its article ID (which must be for an existing, public post); nested replies within comments are returned as raw dictionaries requiring parsing. It is categorised as a Read tool in the Reddit MCP Server, which means it retrieves data without modifying state.
REDDIT_RETRIEVE_POST_COMMENTS accepts 1 parameter: article. 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_RETRIEVE_POST_COMMENTS: 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_RETRIEVE_POST_COMMENTS 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_RETRIEVE_POST_COMMENTS 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_RETRIEVE_POST_COMMENTS. 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_RETRIEVE_POST_COMMENTS 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.