Return a machine-readable catalog of major MCP tools and mutation policy.
AI agents call myob_metadata_get_tool_catalog 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 metadata about available tools and their mutation policies. It performs information lookup only, with no capability to modify, execute, or delete data. Even in the context of a financial/accounting system (MYOB), reading a tool catalog presents minimal risk. The blast radius of misuse is confined to information disclosure about available operations.
From the tool's definition Tool name contains 'get' and description states 'Return a machine-readable catalog' — a read-only retrieval operation with no side effects. The phrase 'mutation policy' indicates it describes policies rather than executing mutations.
Attacks that exploit this kind of access
Return a machine-readable catalog of major MCP tools and mutation policy. 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_metadata_get_tool_catalog: 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_metadata_get_tool_catalog 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_metadata_get_tool_catalog 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_metadata_get_tool_catalog. 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_metadata_get_tool_catalog 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 →