list_meta_conversations
The DM threads on the brand’s Facebook Page and its Instagram account — who wrote, when they last wrote, how many messages and how many are unread. THIS IS WHERE THE BUYING QUESTION GETS ASKED. IT READS THE INBOX AND THE MESSAGE REQUESTS BY DEFAULT (Meta’s
This record as markdown: /tools/hermoso/list-meta-conversations.md
What list_meta_conversations does on Hermoso
AI agents call list_meta_conversations to retrieve information from Hermoso without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why list_meta_conversations is rated Low
Even though list_meta_conversations only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs list_meta_conversations safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Hermoso, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_meta_conversations, this is the rule to start with:
list_meta_conversations is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Hermoso, apply this rule, and every list_meta_conversations call is checked against it from then on.
Questions about list_meta_conversations
The DM threads on the brand’s Facebook Page and its Instagram account — who wrote, when they last wrote, how many messages and how many are unread. THIS IS WHERE THE BUYING QUESTION GETS ASKED. IT READS THE INBOX AND THE MESSAGE REQUESTS BY DEFAULT (Meta’s. It is categorised as a Read tool in the Hermoso MCP Server, which means it retrieves data without modifying state.
Register the Hermoso MCP server in PolicyLayer and add a rule for list_meta_conversations: 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 Hermoso. Nothing to install.
list_meta_conversations 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_meta_conversations 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_meta_conversations. 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_meta_conversations is provided by the Hermoso MCP server (https://app.hermoso.ai/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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