List all worker sets
AI agents call list_worker_sets to retrieve information from Rockfish MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a query/list operation with no side effects. It retrieves information about worker sets but does not create, modify, or delete any data. The verb 'list' combined with the absence of any modification language places it squarely in the Read category with low severity since it only exposes existing data.
From the tool's definition Tool name 'list_worker_sets' and description 'List all worker sets' indicate a read-only operation that retrieves and displays existing worker set information without modifying or deleting any data.
Attacks that exploit this kind of access
List all worker sets. It is categorised as a Read tool in the Rockfish MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Rockfish MCP Server MCP server in PolicyLayer and add a rule for list_worker_sets: 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 Rockfish MCP Server. Nothing to install.
list_worker_sets 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_worker_sets 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_worker_sets. 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_worker_sets is provided by the Rockfish MCP Server MCP server (wolfdancer/rockfish-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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