list_brands
List every profile on this account (id + name; a profile is a brand, a creator or a personal workspace) and which one this connection acts on, PLUS any profile another account shared with you. Call this, then use_brand to switch; a SHARED profile switches the same way (pass its name or the profil...
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What list_brands does on Hermoso
AI agents call list_brands 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_brands is rated Low
Even though list_brands 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.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
The rule that runs list_brands 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_brands, this is the rule to start with:
list_brands 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_brands call is checked against it from then on.
Questions about list_brands
List every profile on this account (id + name; a profile is a brand, a creator or a personal workspace) and which one this connection acts on, PLUS any profile another account shared with you. Call this, then use_brand to switch; a SHARED profile switches the same way (pass its name or the profile id printed here). If a profile looks empty when the app shows it full, you are acting on a different one: call this first. Read-only, free. 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_brands: 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_brands 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_brands 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_brands. 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_brands 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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