List draft sales invoices (accounts receivable), optionally filtered by customer name or reference
AI agents call xero_list_draft_invoices to retrieve information from Xero Expenses 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 existing draft invoice data without creating, modifying, or deleting any records. It is a read-only operation that returns information from the accounting system. While the broader Xero server handles financial instruments (invoices, bills, expenses), this specific tool only reads data, making it a Read category risk.
From the tool's definition Tool name includes 'list' and description states 'List draft sales invoices' with optional filtering parameters (customer name, reference). These are retrieval operations with no modification or side effects.
Attacks that exploit this kind of access
List draft sales invoices (accounts receivable), optionally filtered by customer name or reference. It is categorised as a Read tool in the Xero Expenses MCP MCP Server, which means it retrieves data without modifying state.
Register the Xero Expenses MCP server in PolicyLayer and add a rule for xero_list_draft_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 Xero Expenses MCP. Nothing to install.
xero_list_draft_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 xero_list_draft_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 xero_list_draft_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.
xero_list_draft_invoices is provided by the Xero Expenses MCP server (muness/xero-expenses-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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