List all hubNote workspaces the authenticated user belongs to. Returns id / name / type (personal | team) for each — use the id with other tools.
AI agents call list_workspaces to retrieve information from Hubnote Mcp without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries workspace information available to the authenticated user. It performs no modifications, deletions, or external operations. The returned data (workspace ids and names) is needed to enable other operations but causes no state changes. This is a straightforward Read category tool with low severity due to minimal blast radius if misused — listing workspaces poses no irreversible harm.
From the tool's definition Tool description states 'List all hubNote workspaces' — a retrieval operation with 'no side effects' that returns metadata (id, name, type) for informational purposes.
Attacks that exploit this kind of access
List all hubNote workspaces the authenticated user belongs to. Returns id / name / type (personal | team) for each — use the id with other tools. It is categorised as a Read tool in the Hubnote Mcp MCP Server, which means it retrieves data without modifying state.
Register the Hubnote MCP server in PolicyLayer and add a rule for list_workspaces: 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 Hubnote Mcp. Nothing to install.
list_workspaces 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 list_workspaces 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 list_workspaces. 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.
list_workspaces is provided by the Hubnote MCP server (wlzerd/hubnote-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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