Obsidianノートの内容を読み込みます
AI agents call read_note to retrieve information from Obsidian MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a straightforward retrieval operation on existing Obsidian notes without side effects. It queries and returns data (note content) without creating, modifying, deleting, or executing any operations. The low severity reflects minimal blast radius if misused—an AI agent reading notes can access information but cannot alter the vault state or trigger external actions.
From the tool's definition Tool name is 'read_note' and the description states it reads/retrieves note content ('読み込みます' = 'reads/loads'). No modification, deletion, or execution capability is described.
Attacks that exploit this kind of access
Obsidianノートの内容を読み込みます. It is categorised as a Read tool in the Obsidian MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Obsidian MCP Server MCP server in PolicyLayer and add a rule for read_note: 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 Obsidian MCP Server. Nothing to install.
read_note 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 read_note 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 read_note. 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.
read_note is provided by the Obsidian MCP Server MCP server (libra850/obsidian-mcp-server). 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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