List records for a supported MYOB entity using the endpoint registry.
AI agents call myob_entity_list 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/queries data from MYOB (listing entity records) with no side effects. It aligns with the 'Read' category definition: 'retrieves or queries data; no side effects (search, list, get, fetch).' The low severity reflects minimal blast radius — listing records cannot delete, modify, or expose financial risk in themselves, though the data returned could be sensitive business information.
From the tool's definition Tool name includes 'list' and description states 'List records' — classic read operation. Server description confirms 'read-only tools by default' and this tool has no mention of mutation or approval requirements.
Attacks that exploit this kind of access
List records for a supported MYOB entity using the endpoint registry. 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_entity_list: 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_entity_list 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_entity_list 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_entity_list. 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_entity_list 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.
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