Get bill by UID. If layout is supplied, reads the layout-specific detail endpoint.
AI agents call myob_bill_get to retrieve information from MYOB Codex MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves bill information by a unique identifier and optionally formats it according to a specified layout. No data is created, modified, deleted, or financial transactions are initiated. The operation is a simple GET query that has no side effects beyond returning information.
From the tool's definition Tool name 'myob_bill_get' and description 'Get bill by UID' indicate retrieval of existing data with no modification. The mention of 'reads the layout-specific detail endpoint' confirms a read-only operation.
Attacks that exploit this kind of access
Get bill by UID. If layout is supplied, reads the layout-specific detail endpoint. It is categorised as a Read tool in the MYOB Codex MCP MCP Server, which means it retrieves data without modifying state.
Register the MYOB Codex MCP server in PolicyLayer and add a rule for myob_bill_get: 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 MYOB Codex MCP. Nothing to install.
myob_bill_get 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 myob_bill_get 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 myob_bill_get. 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.
myob_bill_get is provided by the MYOB Codex MCP server (jaeko44/myob-codex-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.
Teams ship this data inside their own products. See what a licence covers →