List files and folders in the vault
AI agents call vault_list to retrieve information from Connect MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns directory/file structure without creating, modifying, or deleting any data. It is a non-destructive read operation with minimal risk even if misused by an agent—the worst outcome is information disclosure about vault contents, which is low severity.
From the tool's definition Tool name 'vault_list' and description 'List files and folders in the vault' indicate a retrieval operation with no modification or deletion.
Attacks that exploit this kind of access
List files and folders in the vault. It is categorised as a Read tool in the Connect MCP MCP Server, which means it retrieves data without modifying state.
Register the Connect MCP server in PolicyLayer and add a rule for vault_list: 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 Connect MCP. Nothing to install.
vault_list 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 vault_list 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 vault_list. 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.
vault_list is provided by the Connect MCP server (joch/obsidian-connect-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.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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