AI agents call review_recurring_stream 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.
The name indicates a read/review operation on financial stream data. While the empty description limits certainty, the passive 'review' verb and absence of modification language (compare to sibling tools like 'create_transaction', 'delete_transaction') suggests this retrieves information without side effects. Classified as Read with medium-low confidence due to missing documentation.
From the tool's definition Tool name 'review_recurring_stream' suggests querying or examining recurring transaction data; no action words like 'create', 'delete', 'update', or 'execute' are present. Description is empty, reducing confidence.
Documented attack patterns abuse exactly the kind of access review_recurring_stream 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 review_recurring_stream:
{
"version": "1",
"default": "deny",
"tools": {
"review_recurring_stream": {}
}
}review_recurring_stream is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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review_recurring_stream. 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 review_recurring_stream: 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.
review_recurring_stream 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 review_recurring_stream 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 review_recurring_stream. 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.
review_recurring_stream 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.
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50 Monarch tools catalogued and risk-classified — across an index of 42,500+ MCP servers.