AI agents call blog_list_posts to retrieve information from Mcp Blog without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and lists blog posts with optional filters. It has no side effects—it queries existing data without creating, modifying, deleting, or executing operations. This is a classic Read operation with minimal blast radius if misused by an AI agent.
From the tool's definition Tool name 'blog_list_posts' and description 'ブログ記事の一覧を取得する' (retrieve list of blog posts) indicate data retrieval with filtering options (published filter, limit count). No modification, deletion, or execution involved.
Attacks that exploit this kind of access
ブログ記事の一覧を取得する。published フィルタと件数上限を指定可能。. It is categorised as a Read tool in the Mcp Blog MCP Server, which means it retrieves data without modifying state.
Register the Mcp Blog MCP server in PolicyLayer and add a rule for blog_list_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 Mcp Blog. Nothing to install.
blog_list_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 blog_list_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 blog_list_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.
blog_list_posts is provided by the Mcp Blog MCP server (masatoshisano/mcp-blog). 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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