List all tags in OmniFocus with their hierarchy. Useful for discovering available tags before creating or editing tasks.
AI agents call list_tags to retrieve information from OmniFocus-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 tag information from OmniFocus without creating, modifying, or deleting any data. It is purely informational and read-only in nature, making it a Read category risk with low severity.
From the tool's definition Tool name 'list_tags' and description states it 'List all tags in OmniFocus' — a retrieval operation with no side effects. The purpose is explicitly to enable discovery without modifying data.
Documented attack patterns abuse exactly the kind of access list_tags gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and OmniFocus-MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for list_tags:
{
"version": "1",
"default": "deny",
"tools": {
"list_tags": {}
}
}list_tags is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List all tags in OmniFocus with their hierarchy. Useful for discovering available tags before creating or editing tasks. It is categorised as a Read tool in the OmniFocus-MCP MCP Server, which means it retrieves data without modifying state.
Register the OmniFocus- MCP server in PolicyLayer and add a rule for list_tags: 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 OmniFocus-MCP. Nothing to install.
list_tags 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_tags 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_tags. 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_tags is provided by the OmniFocus- MCP server (themotionmachine/omnifocus-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 12 OmniFocus-MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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12 OmniFocus-MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.