Retrieves posts from a specific Reddit subreddit (channel). This tool fetches a list of posts from the specified subreddit, sorted by your choice of hot, new, or controversial. It
AI agents call get_channel to retrieve information from Systemprompt without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool performs a read-only operation querying Reddit data. It retrieves existing posts sorted by various criteria (hot, new, controversial) but does not create, modify, delete, or execute any actions. This is a straightforward data retrieval endpoint with no destructive or state-changing capabilities.
From the tool's definition Tool description states it 'Retrieves posts from a specific Reddit subreddit' and 'fetches a list of posts' — these are query/retrieval operations with no modification or side effects.
Documented attack patterns abuse exactly the kind of access get_channel gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Systemprompt, and nothing reaches the server without passing your rules. This is the rule we recommend for get_channel:
{
"version": "1",
"default": "deny",
"tools": {
"get_channel": {}
}
}get_channel is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Retrieves posts from a specific Reddit subreddit (channel). This tool fetches a list of posts from the specified subreddit, sorted by your choice of hot, new, or controversial. It. It is categorised as a Read tool in the Systemprompt MCP Server, which means it retrieves data without modifying state.
Register the Systemprompt MCP server in PolicyLayer and add a rule for get_channel: 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 Systemprompt. Nothing to install.
get_channel 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_channel 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_channel. 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_channel is provided by the Systemprompt MCP server (systempromptio/systemprompt-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 10 Systemprompt tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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10 Systemprompt tools catalogued and risk-classified — across an index of 42,500+ MCP servers.