Try to list accessible company files. New MYOB OAuth flows may require businessId from consent instead.
AI agents call myob_company_list_files 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 or queries company file metadata without creating, modifying, deleting, or executing operations. It has no side effects beyond data retrieval. The low severity reflects the limited blast radius of misuse—an AI agent listing files can cause information disclosure but cannot delete, modify, or execute transactions.
From the tool's definition Tool name 'myob_company_list_files' and description 'list accessible company files' indicate retrieval/query of existing data with no modification or deletion. The server description confirms 'read-only tools by default' for this category of operation.
Attacks that exploit this kind of access
Try to list accessible company files. New MYOB OAuth flows may require businessId from consent instead. 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_company_list_files: 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_company_list_files 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_company_list_files 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_company_list_files. 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_company_list_files 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 →