List Codex Cloud chats.
AI agents call list_chats to retrieve information from Codex Chats without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves or enumerates existing chat records without creating, modifying, or deleting any data. It has no side effects and falls squarely into the Read category. The low severity reflects minimal risk if misused—an agent listing chats poses no destructive threat and only exposes information already owned by the user.
From the tool's definition Tool name 'list_chats' and description 'List Codex Cloud chats' indicate a retrieval operation with no modification or deletion of data.
Attacks that exploit this kind of access
List Codex Cloud chats. It is categorised as a Read tool in the Codex Chats MCP Server, which means it retrieves data without modifying state.
Register the Codex Chats MCP server in PolicyLayer and add a rule for list_chats: 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 Codex Chats. Nothing to install.
list_chats 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 list_chats 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 list_chats. 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.
list_chats is provided by the Codex Chats MCP server (shoyu-ramen/codex-chats-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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