Read a specific post by its ID. Returns the post content, author, creation date, and link to the post.
AI agents call discourse_read_post to retrieve information from Discourse MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a simple read operation that queries and returns post data. It has no capability to create, modify, delete, or execute actions. The only information retrieved is metadata and content already present in the forum, making it a straightforward data retrieval operation with minimal risk.
From the tool's definition Tool name 'discourse_read_post' and description 'Read a specific post by its ID. Returns the post content, author, creation date, and link to the post.' indicate retrieval of existing data with no modification or side effects.
Attacks that exploit this kind of access
Read a specific post by its ID. Returns the post content, author, creation date, and link to the post. It is categorised as a Read tool in the Discourse MCP MCP Server, which means it retrieves data without modifying state.
Register the Discourse MCP server in PolicyLayer and add a rule for discourse_read_post: 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 Discourse MCP. Nothing to install.
discourse_read_post 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 discourse_read_post 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 discourse_read_post. 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.
discourse_read_post is provided by the Discourse MCP server (king-of-the-grackles/discourse-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.
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