freshbooks_list_invoices
AI agents call freshbooks_list_invoices to retrieve information from FreshBooks MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and displays existing invoice data without modifying, deleting, or executing operations. Listing invoices is a standard read operation with no side effects. Severity is low because misuse would only expose existing financial data, not cause irreversible harm or unauthorized transactions.
From the tool's definition Tool name 'freshbooks_list_invoices' indicates a listing/retrieval operation. Server description confirms the tool allows users to 'list invoices' as part of read-only query capabilities.
Attacks that exploit this kind of access
freshbooks_list_invoices. It is categorised as a Read tool in the FreshBooks MCP Server MCP Server, which means it retrieves data without modifying state.
Register the FreshBooks MCP Server MCP server in PolicyLayer and add a rule for freshbooks_list_invoices: 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 FreshBooks MCP Server. Nothing to install.
freshbooks_list_invoices 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 freshbooks_list_invoices 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 freshbooks_list_invoices. 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.
freshbooks_list_invoices is provided by the FreshBooks MCP Server MCP server (roboulos/freshbooks-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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