list_chats · Evolution API MCP Server MCP: Risk & Policy

WHAT IT DOES

What list_chats does on Evolution API MCP Server

AI agents call list_chats to retrieve information from Evolution API MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

WHY IT NEEDS A POLICY

Why list_chats needs a policy

This tool retrieves/queries a list of chats from WhatsApp, analogous to a 'list' or 'get' operation. No data is being created, modified, deleted, or executed. The low severity reflects minimal blast radius—listing chats reveals communication metadata but does not modify state or trigger external actions.

From the tool's definition Tool name 'list_chats' indicates retrieval of chat data. Description is empty, but server context shows this is a WhatsApp integration with sibling tools like 'find_messages', 'get_chat_messages', 'get_contacts' that are clearly Read operations.

Attacks that exploit this kind of access

Questions about list_chats

What does the list_chats tool do? +

list_chats. It is categorised as a Read tool in the Evolution API MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_chats? +

Register the Evolution API MCP Server 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 Evolution API MCP Server. Nothing to install.

What risk level is list_chats? +

list_chats is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_chats? +

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.

How do I block list_chats completely? +

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.

What MCP server provides list_chats? +

list_chats is provided by the Evolution API MCP Server MCP server (pablobispo/evoapi-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.