Get all available transaction tags from Monarch Money.
AI agents call get_transaction_tags to retrieve information from Monarch without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves existing transaction tag data from Monarch Money without creating, modifying, or deleting any information. It is a query-only operation that returns configuration/metadata about available tags, making it a Read category tool with low severity since exposure poses minimal risk—an agent can only discover what tags exist, not manipulate financial data or perform consequential actions.
From the tool's definition Tool name 'get_transaction_tags' and description 'Get all available transaction tags' indicate a retrieval operation with no side effects.
Documented attack patterns abuse exactly the kind of access get_transaction_tags gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Monarch, and nothing reaches the server without passing your rules. This is the rule we recommend for get_transaction_tags:
{
"version": "1",
"default": "deny",
"tools": {
"get_transaction_tags": {}
}
}get_transaction_tags is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get all available transaction tags from Monarch Money. It is categorised as a Read tool in the Monarch MCP Server, which means it retrieves data without modifying state.
Register the Monarch MCP server in PolicyLayer and add a rule for get_transaction_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 Monarch. Nothing to install.
get_transaction_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 get_transaction_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 get_transaction_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.
get_transaction_tags is provided by the Monarch MCP server (robcerda/monarch-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 50 Monarch tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
50 Monarch tools catalogued and risk-classified — across an index of 42,500+ MCP servers.