search_nodes
Search nodes by keywords. Returns nodes containing ANY of the search words (OR logic). Examples:
This record as markdown: /tools/aegntic-aegntic-mcp/search-nodes.md
What search_nodes does on Obsidian Elite RAG MCP Server
AI agents call search_nodes to retrieve information from Obsidian Elite RAG MCP Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why search_nodes is rated Low
This is a standard search/query operation that retrieves data from the Obsidian vault without creating, modifying, deleting, or executing anything. The OR-logic keyword search is a read-only operation. No side effects or data mutations occur. Severity is low because misuse would only expose knowledge base content that an authorized user already has access to.
From the tool's definition Tool searches and returns nodes containing keywords—a retrieval operation with no modification or execution. Description explicitly states it 'Returns nodes,' indicating query-only functionality with OR-based matching logic.
Attacks that exploit this kind of access
The rule that runs search_nodes safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Obsidian Elite RAG MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For search_nodes, this is the rule to start with:
search_nodes is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Obsidian Elite RAG MCP Server, apply this rule, and every search_nodes call is checked against it from then on.
Questions about search_nodes
Search nodes by keywords. Returns nodes containing ANY of the search words (OR logic). Examples:. It is categorised as a Read tool in the Obsidian Elite RAG MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Obsidian Elite RAG MCP Server MCP server in PolicyLayer and add a rule for search_nodes: 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 Elite RAG MCP Server. Nothing to install.
search_nodes 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 search_nodes 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 search_nodes. 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.
search_nodes is provided by the Obsidian Elite RAG MCP Server MCP server (aegntic/aegntic-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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