AI agents call tiers_browse to retrieve information from Ghost MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The 'browse' suffix strongly suggests a read-only retrieval operation that queries tier data without modification. While the empty description reduces confidence slightly, the naming convention on this Ghost CMS server consistently pairs 'browse' with read operations, and tier browsing in a CMS context typically retrieves pricing/membership tier information for display purposes only.
From the tool's definition Tool name 'tiers_browse' indicates a browsing/listing operation; no description provided, but 'browse' pattern is consistent with other read-only tools on this server (invites_browse, members_browse, newsletters_browse).
Documented attack patterns abuse exactly the kind of access tiers_browse gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Ghost MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for tiers_browse:
{
"version": "1",
"default": "deny",
"tools": {
"tiers_browse": {}
}
}tiers_browse is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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tiers_browse. It is categorised as a Read tool in the Ghost MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Ghost MCP Server MCP server in PolicyLayer and add a rule for tiers_browse: 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 Ghost MCP Server. Nothing to install.
tiers_browse 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 tiers_browse 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 tiers_browse. 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.
tiers_browse is provided by the Ghost MCP Server MCP server (mfydev/ghost-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Ghost MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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42 Ghost MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.