Find notes that have no incoming or outgoing [[wikilinks]]. These may
AI agents call get_orphaned_notes to retrieve information from MCP Server Learning without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool only queries and retrieves information about note connectivity patterns in an Obsidian vault. It has no side effects—it doesn't create, modify, delete, or execute any operations. The worst-case misuse scenario involves an AI agent discovering which notes are isolated, which poses minimal risk since no data is altered or actions triggered. This is a straightforward information retrieval tool.
From the tool's definition The tool performs a search/query operation to 'Find notes that have no incoming or outgoing [[wikilinks]]'. It explicitly retrieves data about orphaned notes without modifying, deleting, or executing any operations.
Attacks that exploit this kind of access
Find notes that have no incoming or outgoing [[wikilinks]]. These may. It is categorised as a Read tool in the MCP Server Learning MCP Server, which means it retrieves data without modifying state.
Register the MCP Server Learning MCP server in PolicyLayer and add a rule for get_orphaned_notes: 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 Server Learning. Nothing to install.
get_orphaned_notes 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_orphaned_notes 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_orphaned_notes. 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_orphaned_notes is provided by the MCP Server Learning MCP server (xstraven/mcp-server-learning). 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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